{
  "scene": "NeRF On-the-go / fountain / undistorted",
  "generated_at": "2026-07-15 09:23 UTC",
  "method": "manual visual audit with chronological neighbor context; no clean reference",
  "taxonomy": {
    "primary": [
      "transient_person",
      "transient_people",
      "no_prominent_transient"
    ],
    "person_visibility": [
      "strong_foreground",
      "multiple_people",
      "clear_region",
      "background_small",
      "partial_or_edge",
      "none_visible",
      "other_pedestrian"
    ]
  },
  "records": [
    {
      "index": 0,
      "filename": "IMG_6385.JPG",
      "frame_number": 6385,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6385.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.79,
        "contrast": 55.96,
        "sharpness_laplacian": 2187.27
      },
      "quality_review_flags": []
    },
    {
      "index": 1,
      "filename": "IMG_6386.JPG",
      "frame_number": 6386,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6386.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.19,
        "contrast": 52.34,
        "sharpness_laplacian": 3816.28
      },
      "quality_review_flags": []
    },
    {
      "index": 2,
      "filename": "IMG_6387.JPG",
      "frame_number": 6387,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6387.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 127.65,
        "contrast": 55.95,
        "sharpness_laplacian": 2518.72
      },
      "quality_review_flags": []
    },
    {
      "index": 3,
      "filename": "IMG_6388.JPG",
      "frame_number": 6388,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6388.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 131.73,
        "contrast": 55.44,
        "sharpness_laplacian": 2825.82
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 4,
      "filename": "IMG_6389.JPG",
      "frame_number": 6389,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6389.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.77,
        "contrast": 52.22,
        "sharpness_laplacian": 2356.28
      },
      "quality_review_flags": []
    },
    {
      "index": 5,
      "filename": "IMG_6390.JPG",
      "frame_number": 6390,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6390.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.55,
        "contrast": 54.21,
        "sharpness_laplacian": 1829.44
      },
      "quality_review_flags": []
    },
    {
      "index": 6,
      "filename": "IMG_6391.JPG",
      "frame_number": 6391,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6391.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.98,
        "contrast": 50.99,
        "sharpness_laplacian": 2823.07
      },
      "quality_review_flags": []
    },
    {
      "index": 7,
      "filename": "IMG_6392.JPG",
      "frame_number": 6392,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6392.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.03,
        "contrast": 49.53,
        "sharpness_laplacian": 3495.69
      },
      "quality_review_flags": []
    },
    {
      "index": 8,
      "filename": "IMG_6393.JPG",
      "frame_number": 6393,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6393.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.06,
        "contrast": 58.73,
        "sharpness_laplacian": 2338.74
      },
      "quality_review_flags": []
    },
    {
      "index": 9,
      "filename": "IMG_6394.JPG",
      "frame_number": 6394,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6394.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.97,
        "contrast": 60.4,
        "sharpness_laplacian": 2337.11
      },
      "quality_review_flags": []
    },
    {
      "index": 10,
      "filename": "IMG_6395.JPG",
      "frame_number": 6395,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6395.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.97,
        "contrast": 52.53,
        "sharpness_laplacian": 2504.96
      },
      "quality_review_flags": []
    },
    {
      "index": 11,
      "filename": "IMG_6396.JPG",
      "frame_number": 6396,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6396.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.76,
        "contrast": 53.27,
        "sharpness_laplacian": 3015.91
      },
      "quality_review_flags": []
    },
    {
      "index": 12,
      "filename": "IMG_6397.JPG",
      "frame_number": 6397,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6397.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.95,
        "contrast": 49.77,
        "sharpness_laplacian": 2963.95
      },
      "quality_review_flags": []
    },
    {
      "index": 13,
      "filename": "IMG_6398.JPG",
      "frame_number": 6398,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6398.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.98,
        "contrast": 55.05,
        "sharpness_laplacian": 2289.46
      },
      "quality_review_flags": []
    },
    {
      "index": 14,
      "filename": "IMG_6399.JPG",
      "frame_number": 6399,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6399.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.27,
        "contrast": 52.05,
        "sharpness_laplacian": 2285.54
      },
      "quality_review_flags": []
    },
    {
      "index": 15,
      "filename": "IMG_6400.JPG",
      "frame_number": 6400,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6400.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.28,
        "contrast": 56.16,
        "sharpness_laplacian": 1675.22
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 16,
      "filename": "IMG_6401.JPG",
      "frame_number": 6401,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6401.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 127.96,
        "contrast": 55.75,
        "sharpness_laplacian": 2701.69
      },
      "quality_review_flags": []
    },
    {
      "index": 17,
      "filename": "IMG_6402.JPG",
      "frame_number": 6402,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6402.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.99,
        "contrast": 54.22,
        "sharpness_laplacian": 1972.12
      },
      "quality_review_flags": []
    },
    {
      "index": 18,
      "filename": "IMG_6403.JPG",
      "frame_number": 6403,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6403.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.88,
        "contrast": 56.12,
        "sharpness_laplacian": 1701.96
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 19,
      "filename": "IMG_6404.JPG",
      "frame_number": 6404,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6404.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.58,
        "contrast": 56.12,
        "sharpness_laplacian": 2069.58
      },
      "quality_review_flags": []
    },
    {
      "index": 20,
      "filename": "IMG_6405.JPG",
      "frame_number": 6405,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6405.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.44,
        "contrast": 50.47,
        "sharpness_laplacian": 2392.41
      },
      "quality_review_flags": []
    },
    {
      "index": 21,
      "filename": "IMG_6406.JPG",
      "frame_number": 6406,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6406.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.25,
        "contrast": 49.85,
        "sharpness_laplacian": 2659.42
      },
      "quality_review_flags": []
    },
    {
      "index": 22,
      "filename": "IMG_6407.JPG",
      "frame_number": 6407,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6407.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.08,
        "contrast": 49.33,
        "sharpness_laplacian": 1937.9
      },
      "quality_review_flags": []
    },
    {
      "index": 23,
      "filename": "IMG_6408.JPG",
      "frame_number": 6408,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6408.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.12,
        "contrast": 54.67,
        "sharpness_laplacian": 3934.75
      },
      "quality_review_flags": []
    },
    {
      "index": 24,
      "filename": "IMG_6409.JPG",
      "frame_number": 6409,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6409.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.42,
        "contrast": 52.64,
        "sharpness_laplacian": 4228.23
      },
      "quality_review_flags": []
    },
    {
      "index": 25,
      "filename": "IMG_6410.JPG",
      "frame_number": 6410,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6410.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.22,
        "contrast": 54.7,
        "sharpness_laplacian": 3904.23
      },
      "quality_review_flags": []
    },
    {
      "index": 26,
      "filename": "IMG_6411.JPG",
      "frame_number": 6411,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6411.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.62,
        "contrast": 53.85,
        "sharpness_laplacian": 3495.19
      },
      "quality_review_flags": []
    },
    {
      "index": 27,
      "filename": "IMG_6412.JPG",
      "frame_number": 6412,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6412.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 114.73,
        "contrast": 53.21,
        "sharpness_laplacian": 3504.25
      },
      "quality_review_flags": []
    },
    {
      "index": 28,
      "filename": "IMG_6413.JPG",
      "frame_number": 6413,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6413.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.24,
        "contrast": 50.29,
        "sharpness_laplacian": 3259.63
      },
      "quality_review_flags": []
    },
    {
      "index": 29,
      "filename": "IMG_6414.JPG",
      "frame_number": 6414,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6414.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.76,
        "contrast": 61.01,
        "sharpness_laplacian": 2269.38
      },
      "quality_review_flags": []
    },
    {
      "index": 30,
      "filename": "IMG_6415.JPG",
      "frame_number": 6415,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6415.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 110.79,
        "contrast": 44.98,
        "sharpness_laplacian": 5282.66
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 31,
      "filename": "IMG_6416.JPG",
      "frame_number": 6416,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6416.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 111.77,
        "contrast": 45.79,
        "sharpness_laplacian": 4922.2
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 32,
      "filename": "IMG_6417.JPG",
      "frame_number": 6417,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6417.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 121.06,
        "contrast": 66.02,
        "sharpness_laplacian": 2277.25
      },
      "quality_review_flags": []
    },
    {
      "index": 33,
      "filename": "IMG_6418.JPG",
      "frame_number": 6418,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6418.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 131.02,
        "contrast": 72.89,
        "sharpness_laplacian": 2358.15
      },
      "quality_review_flags": []
    },
    {
      "index": 34,
      "filename": "IMG_6419.JPG",
      "frame_number": 6419,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6419.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 112.94,
        "contrast": 45.37,
        "sharpness_laplacian": 4877.01
      },
      "quality_review_flags": []
    },
    {
      "index": 35,
      "filename": "IMG_6420.JPG",
      "frame_number": 6420,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6420.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 114.08,
        "contrast": 45.86,
        "sharpness_laplacian": 4482.36
      },
      "quality_review_flags": []
    },
    {
      "index": 36,
      "filename": "IMG_6421.JPG",
      "frame_number": 6421,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6421.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.97,
        "contrast": 63.99,
        "sharpness_laplacian": 2190.92
      },
      "quality_review_flags": []
    },
    {
      "index": 37,
      "filename": "IMG_6422.JPG",
      "frame_number": 6422,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6422.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.11,
        "contrast": 71.21,
        "sharpness_laplacian": 2567.84
      },
      "quality_review_flags": []
    },
    {
      "index": 38,
      "filename": "IMG_6423.JPG",
      "frame_number": 6423,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6423.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 138.76,
        "contrast": 75.12,
        "sharpness_laplacian": 2735.69
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 39,
      "filename": "IMG_6424.JPG",
      "frame_number": 6424,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6424.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.61,
        "contrast": 47.21,
        "sharpness_laplacian": 3281.28
      },
      "quality_review_flags": []
    },
    {
      "index": 40,
      "filename": "IMG_6425.JPG",
      "frame_number": 6425,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6425.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.95,
        "contrast": 59.55,
        "sharpness_laplacian": 2351.78
      },
      "quality_review_flags": []
    },
    {
      "index": 41,
      "filename": "IMG_6426.JPG",
      "frame_number": 6426,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6426.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 138.0,
        "contrast": 72.85,
        "sharpness_laplacian": 2374.59
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 42,
      "filename": "IMG_6427.JPG",
      "frame_number": 6427,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6427.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 139.96,
        "contrast": 74.38,
        "sharpness_laplacian": 2423.7
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 43,
      "filename": "IMG_6428.JPG",
      "frame_number": 6428,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6428.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.03,
        "contrast": 47.28,
        "sharpness_laplacian": 3566.48
      },
      "quality_review_flags": []
    },
    {
      "index": 44,
      "filename": "IMG_6429.JPG",
      "frame_number": 6429,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6429.JPG",
      "primary_cause": "transient_people",
      "person_visibility": "multiple_people",
      "severity": "medium",
      "confidence": 0.91,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物与其他行人同时可见；应分别做区域级动态 mask。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 112.8,
        "contrast": 47.13,
        "sharpness_laplacian": 2415.38
      },
      "quality_review_flags": []
    },
    {
      "index": 45,
      "filename": "IMG_6430.JPG",
      "frame_number": 6430,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6430.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.9,
        "contrast": 63.87,
        "sharpness_laplacian": 1861.77
      },
      "quality_review_flags": []
    },
    {
      "index": 46,
      "filename": "IMG_6431.JPG",
      "frame_number": 6431,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6431.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.46,
        "contrast": 70.21,
        "sharpness_laplacian": 1780.24
      },
      "quality_review_flags": []
    },
    {
      "index": 47,
      "filename": "IMG_6432.JPG",
      "frame_number": 6432,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6432.JPG",
      "primary_cause": "transient_people",
      "person_visibility": "multiple_people",
      "severity": "medium",
      "confidence": 0.91,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物与其他行人同时可见；应分别做区域级动态 mask。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.82,
        "contrast": 62.93,
        "sharpness_laplacian": 1804.31
      },
      "quality_review_flags": []
    },
    {
      "index": 48,
      "filename": "IMG_6433.JPG",
      "frame_number": 6433,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6433.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 119.31,
        "contrast": 58.73,
        "sharpness_laplacian": 2542.13
      },
      "quality_review_flags": []
    },
    {
      "index": 49,
      "filename": "IMG_6434.JPG",
      "frame_number": 6434,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6434.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 119.54,
        "contrast": 52.51,
        "sharpness_laplacian": 2575.88
      },
      "quality_review_flags": []
    },
    {
      "index": 50,
      "filename": "IMG_6435.JPG",
      "frame_number": 6435,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6435.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.8,
        "contrast": 53.13,
        "sharpness_laplacian": 2799.49
      },
      "quality_review_flags": []
    },
    {
      "index": 51,
      "filename": "IMG_6437.JPG",
      "frame_number": 6437,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6437.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 111.63,
        "contrast": 48.67,
        "sharpness_laplacian": 3207.41
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 52,
      "filename": "IMG_6438.JPG",
      "frame_number": 6438,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6438.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.68,
        "contrast": 47.29,
        "sharpness_laplacian": 2171.81
      },
      "quality_review_flags": []
    },
    {
      "index": 53,
      "filename": "IMG_6439.JPG",
      "frame_number": 6439,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6439.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.78,
        "contrast": 55.22,
        "sharpness_laplacian": 3215.06
      },
      "quality_review_flags": []
    },
    {
      "index": 54,
      "filename": "IMG_6440.JPG",
      "frame_number": 6440,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6440.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.64,
        "contrast": 55.62,
        "sharpness_laplacian": 3313.74
      },
      "quality_review_flags": []
    },
    {
      "index": 55,
      "filename": "IMG_6441.JPG",
      "frame_number": 6441,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6441.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 121.35,
        "contrast": 54.52,
        "sharpness_laplacian": 3066.19
      },
      "quality_review_flags": []
    },
    {
      "index": 56,
      "filename": "IMG_6442.JPG",
      "frame_number": 6442,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6442.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.61,
        "contrast": 52.12,
        "sharpness_laplacian": 3322.65
      },
      "quality_review_flags": []
    },
    {
      "index": 57,
      "filename": "IMG_6443.JPG",
      "frame_number": 6443,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6443.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 114.86,
        "contrast": 50.38,
        "sharpness_laplacian": 3112.4
      },
      "quality_review_flags": []
    },
    {
      "index": 58,
      "filename": "IMG_6444.JPG",
      "frame_number": 6444,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6444.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.79,
        "contrast": 55.35,
        "sharpness_laplacian": 2358.29
      },
      "quality_review_flags": []
    },
    {
      "index": 59,
      "filename": "IMG_6445.JPG",
      "frame_number": 6445,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6445.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.57,
        "contrast": 50.29,
        "sharpness_laplacian": 3441.32
      },
      "quality_review_flags": []
    },
    {
      "index": 60,
      "filename": "IMG_6446.JPG",
      "frame_number": 6446,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6446.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.06,
        "contrast": 61.82,
        "sharpness_laplacian": 3177.37
      },
      "quality_review_flags": []
    },
    {
      "index": 61,
      "filename": "IMG_6447.JPG",
      "frame_number": 6447,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6447.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.85,
        "contrast": 52.79,
        "sharpness_laplacian": 3247.21
      },
      "quality_review_flags": []
    },
    {
      "index": 62,
      "filename": "IMG_6448.JPG",
      "frame_number": 6448,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6448.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.3,
        "contrast": 49.62,
        "sharpness_laplacian": 3438.25
      },
      "quality_review_flags": []
    },
    {
      "index": 63,
      "filename": "IMG_6449.JPG",
      "frame_number": 6449,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6449.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.96,
        "contrast": 48.21,
        "sharpness_laplacian": 3009.44
      },
      "quality_review_flags": []
    },
    {
      "index": 64,
      "filename": "IMG_6450.JPG",
      "frame_number": 6450,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6450.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.62,
        "contrast": 44.41,
        "sharpness_laplacian": 2538.31
      },
      "quality_review_flags": []
    },
    {
      "index": 65,
      "filename": "IMG_6451.JPG",
      "frame_number": 6451,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6451.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.2,
        "contrast": 40.99,
        "sharpness_laplacian": 2946.15
      },
      "quality_review_flags": []
    },
    {
      "index": 66,
      "filename": "IMG_6452.JPG",
      "frame_number": 6452,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6452.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 114.93,
        "contrast": 47.37,
        "sharpness_laplacian": 2055.98
      },
      "quality_review_flags": []
    },
    {
      "index": 67,
      "filename": "IMG_6453.JPG",
      "frame_number": 6453,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6453.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.03,
        "contrast": 52.65,
        "sharpness_laplacian": 2702.82
      },
      "quality_review_flags": []
    },
    {
      "index": 68,
      "filename": "IMG_6454.JPG",
      "frame_number": 6454,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6454.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.15,
        "contrast": 60.65,
        "sharpness_laplacian": 3332.04
      },
      "quality_review_flags": []
    },
    {
      "index": 69,
      "filename": "IMG_6455.JPG",
      "frame_number": 6455,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6455.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.71,
        "contrast": 47.76,
        "sharpness_laplacian": 2840.62
      },
      "quality_review_flags": []
    },
    {
      "index": 70,
      "filename": "IMG_6456.JPG",
      "frame_number": 6456,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6456.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.12,
        "contrast": 56.6,
        "sharpness_laplacian": 3096.76
      },
      "quality_review_flags": []
    },
    {
      "index": 71,
      "filename": "IMG_6457.JPG",
      "frame_number": 6457,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6457.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 119.48,
        "contrast": 62.79,
        "sharpness_laplacian": 3305.83
      },
      "quality_review_flags": []
    },
    {
      "index": 72,
      "filename": "IMG_6458.JPG",
      "frame_number": 6458,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6458.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.83,
        "contrast": 60.45,
        "sharpness_laplacian": 2791.01
      },
      "quality_review_flags": []
    },
    {
      "index": 73,
      "filename": "IMG_6459.JPG",
      "frame_number": 6459,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6459.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.11,
        "contrast": 50.4,
        "sharpness_laplacian": 2662.53
      },
      "quality_review_flags": []
    },
    {
      "index": 74,
      "filename": "IMG_6461.JPG",
      "frame_number": 6461,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6461.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "other_pedestrian",
      "severity": "medium",
      "confidence": 0.82,
      "route": "region_mask_required",
      "rationale_zh": "可见另一位路人；跨相邻视图位置变化，属于瞬态遮挡。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.87,
        "contrast": 53.59,
        "sharpness_laplacian": 2855.09
      },
      "quality_review_flags": []
    },
    {
      "index": 75,
      "filename": "IMG_6462.JPG",
      "frame_number": 6462,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6462.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.23,
        "contrast": 63.63,
        "sharpness_laplacian": 2175.45
      },
      "quality_review_flags": []
    },
    {
      "index": 76,
      "filename": "IMG_6463.JPG",
      "frame_number": 6463,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6463.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.89,
        "contrast": 60.83,
        "sharpness_laplacian": 3166.2
      },
      "quality_review_flags": []
    },
    {
      "index": 77,
      "filename": "IMG_6464.JPG",
      "frame_number": 6464,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6464.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.31,
        "contrast": 46.49,
        "sharpness_laplacian": 2199.48
      },
      "quality_review_flags": []
    },
    {
      "index": 78,
      "filename": "IMG_6465.JPG",
      "frame_number": 6465,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6465.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.65,
        "contrast": 45.04,
        "sharpness_laplacian": 2761.9
      },
      "quality_review_flags": []
    },
    {
      "index": 79,
      "filename": "IMG_6466.JPG",
      "frame_number": 6466,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6466.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.89,
        "contrast": 42.83,
        "sharpness_laplacian": 2220.51
      },
      "quality_review_flags": []
    },
    {
      "index": 80,
      "filename": "IMG_6467.JPG",
      "frame_number": 6467,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6467.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.22,
        "contrast": 56.82,
        "sharpness_laplacian": 2481.23
      },
      "quality_review_flags": []
    },
    {
      "index": 81,
      "filename": "IMG_6468.JPG",
      "frame_number": 6468,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6468.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.56,
        "contrast": 56.29,
        "sharpness_laplacian": 1819.44
      },
      "quality_review_flags": []
    },
    {
      "index": 82,
      "filename": "IMG_6469.JPG",
      "frame_number": 6469,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6469.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.44,
        "contrast": 57.52,
        "sharpness_laplacian": 2020.71
      },
      "quality_review_flags": []
    },
    {
      "index": 83,
      "filename": "IMG_6470.JPG",
      "frame_number": 6470,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6470.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.19,
        "contrast": 55.51,
        "sharpness_laplacian": 1770.38
      },
      "quality_review_flags": []
    },
    {
      "index": 84,
      "filename": "IMG_6471.JPG",
      "frame_number": 6471,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6471.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.08,
        "contrast": 56.24,
        "sharpness_laplacian": 2059.74
      },
      "quality_review_flags": []
    },
    {
      "index": 85,
      "filename": "IMG_6472.JPG",
      "frame_number": 6472,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6472.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 131.8,
        "contrast": 58.55,
        "sharpness_laplacian": 1951.11
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 86,
      "filename": "IMG_6473.JPG",
      "frame_number": 6473,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6473.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.58,
        "contrast": 55.17,
        "sharpness_laplacian": 2327.05
      },
      "quality_review_flags": []
    },
    {
      "index": 87,
      "filename": "IMG_6474.JPG",
      "frame_number": 6474,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6474.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.15,
        "contrast": 53.47,
        "sharpness_laplacian": 1818.5
      },
      "quality_review_flags": []
    },
    {
      "index": 88,
      "filename": "IMG_6475.JPG",
      "frame_number": 6475,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6475.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.61,
        "contrast": 49.32,
        "sharpness_laplacian": 1680.3
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 89,
      "filename": "IMG_6476.JPG",
      "frame_number": 6476,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6476.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.33,
        "contrast": 55.87,
        "sharpness_laplacian": 2130.22
      },
      "quality_review_flags": []
    },
    {
      "index": 90,
      "filename": "IMG_6477.JPG",
      "frame_number": 6477,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6477.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.3,
        "contrast": 50.77,
        "sharpness_laplacian": 2037.86
      },
      "quality_review_flags": []
    },
    {
      "index": 91,
      "filename": "IMG_6478.JPG",
      "frame_number": 6478,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6478.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.34,
        "contrast": 47.66,
        "sharpness_laplacian": 4445.44
      },
      "quality_review_flags": []
    },
    {
      "index": 92,
      "filename": "IMG_6479.JPG",
      "frame_number": 6479,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6479.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.23,
        "contrast": 56.61,
        "sharpness_laplacian": 3419.22
      },
      "quality_review_flags": []
    },
    {
      "index": 93,
      "filename": "IMG_6480.JPG",
      "frame_number": 6480,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6480.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.53,
        "contrast": 55.39,
        "sharpness_laplacian": 2684.65
      },
      "quality_review_flags": []
    },
    {
      "index": 94,
      "filename": "IMG_6481.JPG",
      "frame_number": 6481,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6481.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.44,
        "contrast": 46.11,
        "sharpness_laplacian": 2537.15
      },
      "quality_review_flags": []
    },
    {
      "index": 95,
      "filename": "IMG_6482.JPG",
      "frame_number": 6482,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6482.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.28,
        "contrast": 55.49,
        "sharpness_laplacian": 2382.93
      },
      "quality_review_flags": []
    },
    {
      "index": 96,
      "filename": "IMG_6483.JPG",
      "frame_number": 6483,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6483.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.52,
        "contrast": 61.88,
        "sharpness_laplacian": 2064.45
      },
      "quality_review_flags": []
    },
    {
      "index": 97,
      "filename": "IMG_6484.JPG",
      "frame_number": 6484,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6484.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.85,
        "contrast": 64.68,
        "sharpness_laplacian": 1854.36
      },
      "quality_review_flags": []
    },
    {
      "index": 98,
      "filename": "IMG_6485.JPG",
      "frame_number": 6485,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6485.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.41,
        "contrast": 56.55,
        "sharpness_laplacian": 2372.18
      },
      "quality_review_flags": []
    },
    {
      "index": 99,
      "filename": "IMG_6486.JPG",
      "frame_number": 6486,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6486.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 108.11,
        "contrast": 49.15,
        "sharpness_laplacian": 2168.42
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 100,
      "filename": "IMG_6487.JPG",
      "frame_number": 6487,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6487.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.69,
        "contrast": 40.52,
        "sharpness_laplacian": 3300.69
      },
      "quality_review_flags": []
    },
    {
      "index": 101,
      "filename": "IMG_6488.JPG",
      "frame_number": 6488,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6488.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 114.19,
        "contrast": 41.03,
        "sharpness_laplacian": 3380.88
      },
      "quality_review_flags": []
    },
    {
      "index": 102,
      "filename": "IMG_6489.JPG",
      "frame_number": 6489,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6489.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 107.06,
        "contrast": 50.32,
        "sharpness_laplacian": 2100.52
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 103,
      "filename": "IMG_6490.JPG",
      "frame_number": 6490,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6490.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.09,
        "contrast": 59.39,
        "sharpness_laplacian": 2601.26
      },
      "quality_review_flags": []
    },
    {
      "index": 104,
      "filename": "IMG_6491.JPG",
      "frame_number": 6491,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6491.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.78,
        "contrast": 67.47,
        "sharpness_laplacian": 2447.94
      },
      "quality_review_flags": []
    },
    {
      "index": 105,
      "filename": "IMG_6492.JPG",
      "frame_number": 6492,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6492.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 112.67,
        "contrast": 44.96,
        "sharpness_laplacian": 4236.19
      },
      "quality_review_flags": []
    },
    {
      "index": 106,
      "filename": "IMG_6493.JPG",
      "frame_number": 6493,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6493.JPG",
      "primary_cause": "transient_people",
      "person_visibility": "multiple_people",
      "severity": "medium",
      "confidence": 0.91,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物与其他行人同时可见；应分别做区域级动态 mask。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 109.97,
        "contrast": 49.0,
        "sharpness_laplacian": 2608.87
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 107,
      "filename": "IMG_6494.JPG",
      "frame_number": 6494,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6494.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.85,
        "contrast": 58.24,
        "sharpness_laplacian": 2212.1
      },
      "quality_review_flags": []
    },
    {
      "index": 108,
      "filename": "IMG_6495.JPG",
      "frame_number": 6495,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6495.JPG",
      "primary_cause": "transient_people",
      "person_visibility": "multiple_people",
      "severity": "medium",
      "confidence": 0.91,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物与其他行人同时可见；应分别做区域级动态 mask。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 121.81,
        "contrast": 66.95,
        "sharpness_laplacian": 2369.36
      },
      "quality_review_flags": []
    },
    {
      "index": 109,
      "filename": "IMG_6496.JPG",
      "frame_number": 6496,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6496.JPG",
      "primary_cause": "transient_people",
      "person_visibility": "multiple_people",
      "severity": "medium",
      "confidence": 0.91,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物与其他行人同时可见；应分别做区域级动态 mask。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 131.38,
        "contrast": 73.78,
        "sharpness_laplacian": 2213.19
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 110,
      "filename": "IMG_6497.JPG",
      "frame_number": 6497,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6497.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.43,
        "contrast": 56.37,
        "sharpness_laplacian": 1874.95
      },
      "quality_review_flags": []
    },
    {
      "index": 111,
      "filename": "IMG_6498.JPG",
      "frame_number": 6498,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6498.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.94,
        "contrast": 63.66,
        "sharpness_laplacian": 1927.74
      },
      "quality_review_flags": []
    },
    {
      "index": 112,
      "filename": "IMG_6499.JPG",
      "frame_number": 6499,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6499.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 111.44,
        "contrast": 51.6,
        "sharpness_laplacian": 2397.85
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 113,
      "filename": "IMG_6500.JPG",
      "frame_number": 6500,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6500.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.07,
        "contrast": 45.96,
        "sharpness_laplacian": 4061.92
      },
      "quality_review_flags": []
    },
    {
      "index": 114,
      "filename": "IMG_6501.JPG",
      "frame_number": 6501,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6501.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.49,
        "contrast": 67.15,
        "sharpness_laplacian": 2228.64
      },
      "quality_review_flags": []
    },
    {
      "index": 115,
      "filename": "IMG_6502.JPG",
      "frame_number": 6502,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6502.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.43,
        "contrast": 68.93,
        "sharpness_laplacian": 1672.09
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 116,
      "filename": "IMG_6503.JPG",
      "frame_number": 6503,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6503.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 112.21,
        "contrast": 51.62,
        "sharpness_laplacian": 1954.59
      },
      "quality_review_flags": []
    },
    {
      "index": 117,
      "filename": "IMG_6504.JPG",
      "frame_number": 6504,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6504.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 109.41,
        "contrast": 48.92,
        "sharpness_laplacian": 2631.87
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 118,
      "filename": "IMG_6505.JPG",
      "frame_number": 6505,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6505.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 108.31,
        "contrast": 48.59,
        "sharpness_laplacian": 2796.46
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 119,
      "filename": "IMG_6506.JPG",
      "frame_number": 6506,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6506.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 108.86,
        "contrast": 49.1,
        "sharpness_laplacian": 2315.93
      },
      "quality_review_flags": [
        "brightness_low_outlier"
      ]
    },
    {
      "index": 120,
      "filename": "IMG_6507.JPG",
      "frame_number": 6507,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6507.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.56,
        "contrast": 63.27,
        "sharpness_laplacian": 1566.14
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 121,
      "filename": "IMG_6508.JPG",
      "frame_number": 6508,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6508.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 137.34,
        "contrast": 75.55,
        "sharpness_laplacian": 1592.27
      },
      "quality_review_flags": [
        "brightness_high_outlier",
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 122,
      "filename": "IMG_6509.JPG",
      "frame_number": 6509,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6509.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.3,
        "contrast": 52.67,
        "sharpness_laplacian": 2934.77
      },
      "quality_review_flags": []
    },
    {
      "index": 123,
      "filename": "IMG_6510.JPG",
      "frame_number": 6510,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6510.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.53,
        "contrast": 53.32,
        "sharpness_laplacian": 2263.33
      },
      "quality_review_flags": []
    },
    {
      "index": 124,
      "filename": "IMG_6511.JPG",
      "frame_number": 6511,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6511.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.67,
        "contrast": 51.58,
        "sharpness_laplacian": 3093.31
      },
      "quality_review_flags": []
    },
    {
      "index": 125,
      "filename": "IMG_6512.JPG",
      "frame_number": 6512,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6512.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 121.02,
        "contrast": 54.82,
        "sharpness_laplacian": 2982.3
      },
      "quality_review_flags": []
    },
    {
      "index": 126,
      "filename": "IMG_6513.JPG",
      "frame_number": 6513,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6513.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.02,
        "contrast": 55.93,
        "sharpness_laplacian": 2407.94
      },
      "quality_review_flags": []
    },
    {
      "index": 127,
      "filename": "IMG_6514.JPG",
      "frame_number": 6514,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6514.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 121.01,
        "contrast": 49.47,
        "sharpness_laplacian": 3399.81
      },
      "quality_review_flags": []
    },
    {
      "index": 128,
      "filename": "IMG_6515.JPG",
      "frame_number": 6515,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6515.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.94,
        "contrast": 43.72,
        "sharpness_laplacian": 3023.66
      },
      "quality_review_flags": []
    },
    {
      "index": 129,
      "filename": "IMG_6516.JPG",
      "frame_number": 6516,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6516.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.34,
        "contrast": 51.87,
        "sharpness_laplacian": 3244.0
      },
      "quality_review_flags": []
    },
    {
      "index": 130,
      "filename": "IMG_6517.JPG",
      "frame_number": 6517,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6517.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.55,
        "contrast": 53.29,
        "sharpness_laplacian": 3127.65
      },
      "quality_review_flags": []
    },
    {
      "index": 131,
      "filename": "IMG_6518.JPG",
      "frame_number": 6518,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6518.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.13,
        "contrast": 49.22,
        "sharpness_laplacian": 3220.43
      },
      "quality_review_flags": []
    },
    {
      "index": 132,
      "filename": "IMG_6519.JPG",
      "frame_number": 6519,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6519.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.28,
        "contrast": 49.84,
        "sharpness_laplacian": 2816.78
      },
      "quality_review_flags": []
    },
    {
      "index": 133,
      "filename": "IMG_6520.JPG",
      "frame_number": 6520,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6520.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "partial_or_edge",
      "severity": "low",
      "confidence": 0.79,
      "route": "edge_region_mask_or_review",
      "rationale_zh": "人物、衣物或携带物仅在画面边缘/遮挡后局部可见，需要区域复核。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 112.42,
        "contrast": 46.34,
        "sharpness_laplacian": 2475.26
      },
      "quality_review_flags": []
    },
    {
      "index": 134,
      "filename": "IMG_6521.JPG",
      "frame_number": 6521,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6521.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.49,
        "contrast": 41.97,
        "sharpness_laplacian": 2617.77
      },
      "quality_review_flags": []
    },
    {
      "index": 135,
      "filename": "IMG_6522.JPG",
      "frame_number": 6522,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6522.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.18,
        "contrast": 51.96,
        "sharpness_laplacian": 3291.74
      },
      "quality_review_flags": []
    },
    {
      "index": 136,
      "filename": "IMG_6523.JPG",
      "frame_number": 6523,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6523.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.07,
        "contrast": 61.29,
        "sharpness_laplacian": 3264.71
      },
      "quality_review_flags": []
    },
    {
      "index": 137,
      "filename": "IMG_6524.JPG",
      "frame_number": 6524,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6524.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.77,
        "contrast": 61.55,
        "sharpness_laplacian": 2929.77
      },
      "quality_review_flags": []
    },
    {
      "index": 138,
      "filename": "IMG_6525.JPG",
      "frame_number": 6525,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6525.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.22,
        "contrast": 50.48,
        "sharpness_laplacian": 3263.44
      },
      "quality_review_flags": []
    },
    {
      "index": 139,
      "filename": "IMG_6526.JPG",
      "frame_number": 6526,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6526.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 120.28,
        "contrast": 56.65,
        "sharpness_laplacian": 3360.15
      },
      "quality_review_flags": []
    },
    {
      "index": 140,
      "filename": "IMG_6527.JPG",
      "frame_number": 6527,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6527.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.45,
        "contrast": 50.99,
        "sharpness_laplacian": 2937.31
      },
      "quality_review_flags": []
    },
    {
      "index": 141,
      "filename": "IMG_6528.JPG",
      "frame_number": 6528,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6528.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.92,
        "contrast": 40.15,
        "sharpness_laplacian": 2260.59
      },
      "quality_review_flags": []
    },
    {
      "index": 142,
      "filename": "IMG_6529.JPG",
      "frame_number": 6529,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6529.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.67,
        "contrast": 48.27,
        "sharpness_laplacian": 2293.43
      },
      "quality_review_flags": []
    },
    {
      "index": 143,
      "filename": "IMG_6530.JPG",
      "frame_number": 6530,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6530.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.01,
        "contrast": 41.28,
        "sharpness_laplacian": 1893.11
      },
      "quality_review_flags": []
    },
    {
      "index": 144,
      "filename": "IMG_6531.JPG",
      "frame_number": 6531,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6531.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.38,
        "contrast": 54.31,
        "sharpness_laplacian": 2471.66
      },
      "quality_review_flags": []
    },
    {
      "index": 145,
      "filename": "IMG_6532.JPG",
      "frame_number": 6532,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6532.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 127.83,
        "contrast": 55.78,
        "sharpness_laplacian": 2786.4
      },
      "quality_review_flags": []
    },
    {
      "index": 146,
      "filename": "IMG_6533.JPG",
      "frame_number": 6533,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6533.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 112.28,
        "contrast": 37.87,
        "sharpness_laplacian": 2186.39
      },
      "quality_review_flags": []
    },
    {
      "index": 147,
      "filename": "IMG_6534.JPG",
      "frame_number": 6534,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6534.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 119.97,
        "contrast": 50.4,
        "sharpness_laplacian": 2602.81
      },
      "quality_review_flags": []
    },
    {
      "index": 148,
      "filename": "IMG_6535.JPG",
      "frame_number": 6535,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6535.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.63,
        "contrast": 53.39,
        "sharpness_laplacian": 2770.64
      },
      "quality_review_flags": []
    },
    {
      "index": 149,
      "filename": "IMG_6536.JPG",
      "frame_number": 6536,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6536.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 129.15,
        "contrast": 50.96,
        "sharpness_laplacian": 2319.37
      },
      "quality_review_flags": []
    },
    {
      "index": 150,
      "filename": "IMG_6537.JPG",
      "frame_number": 6537,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6537.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 119.04,
        "contrast": 47.66,
        "sharpness_laplacian": 2375.3
      },
      "quality_review_flags": []
    },
    {
      "index": 151,
      "filename": "IMG_6538.JPG",
      "frame_number": 6538,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6538.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 131.03,
        "contrast": 51.19,
        "sharpness_laplacian": 1944.76
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 152,
      "filename": "IMG_6539.JPG",
      "frame_number": 6539,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6539.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.58,
        "contrast": 54.49,
        "sharpness_laplacian": 3144.23
      },
      "quality_review_flags": []
    },
    {
      "index": 153,
      "filename": "IMG_6540.JPG",
      "frame_number": 6540,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6540.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 117.09,
        "contrast": 51.43,
        "sharpness_laplacian": 3435.78
      },
      "quality_review_flags": []
    },
    {
      "index": 154,
      "filename": "IMG_6541.JPG",
      "frame_number": 6541,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6541.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 115.57,
        "contrast": 55.15,
        "sharpness_laplacian": 3292.3
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      "quality_review_flags": []
    },
    {
      "index": 155,
      "filename": "IMG_6542.JPG",
      "frame_number": 6542,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6542.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 119.12,
        "contrast": 49.99,
        "sharpness_laplacian": 3116.68
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      "quality_review_flags": []
    },
    {
      "index": 156,
      "filename": "IMG_6543.JPG",
      "frame_number": 6543,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6543.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 119.23,
        "contrast": 53.97,
        "sharpness_laplacian": 2901.31
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      "quality_review_flags": []
    },
    {
      "index": 157,
      "filename": "IMG_6544.JPG",
      "frame_number": 6544,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6544.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 119.41,
        "contrast": 52.61,
        "sharpness_laplacian": 3045.76
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      "quality_review_flags": []
    },
    {
      "index": 158,
      "filename": "IMG_6545.JPG",
      "frame_number": 6545,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6545.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 121.15,
        "contrast": 63.22,
        "sharpness_laplacian": 2147.72
      },
      "quality_review_flags": []
    },
    {
      "index": 159,
      "filename": "IMG_6546.JPG",
      "frame_number": 6546,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6546.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 119.85,
        "contrast": 59.99,
        "sharpness_laplacian": 2086.36
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      "quality_review_flags": []
    },
    {
      "index": 160,
      "filename": "IMG_6547.JPG",
      "frame_number": 6547,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6547.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 113.27,
        "contrast": 43.0,
        "sharpness_laplacian": 5230.32
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      "quality_review_flags": []
    },
    {
      "index": 161,
      "filename": "IMG_6548.JPG",
      "frame_number": 6548,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6548.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 115.48,
        "contrast": 46.06,
        "sharpness_laplacian": 7189.71
      },
      "quality_review_flags": []
    },
    {
      "index": 162,
      "filename": "IMG_6549.JPG",
      "frame_number": 6549,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6549.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.78,
        "contrast": 50.03,
        "sharpness_laplacian": 3189.96
      },
      "quality_review_flags": []
    },
    {
      "index": 163,
      "filename": "IMG_6550.JPG",
      "frame_number": 6550,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6550.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 121.75,
        "contrast": 62.05,
        "sharpness_laplacian": 2034.78
      },
      "quality_review_flags": []
    },
    {
      "index": 164,
      "filename": "IMG_6551.JPG",
      "frame_number": 6551,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6551.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 116.24,
        "contrast": 52.7,
        "sharpness_laplacian": 2346.89
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      "quality_review_flags": []
    },
    {
      "index": 165,
      "filename": "IMG_6552.JPG",
      "frame_number": 6552,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6552.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 118.12,
        "contrast": 48.27,
        "sharpness_laplacian": 4276.87
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      "quality_review_flags": []
    },
    {
      "index": 166,
      "filename": "IMG_6553.JPG",
      "frame_number": 6553,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6553.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 125.56,
        "contrast": 55.8,
        "sharpness_laplacian": 3275.77
      },
      "quality_review_flags": []
    },
    {
      "index": 167,
      "filename": "IMG_6554.JPG",
      "frame_number": 6554,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6554.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 123.58,
        "contrast": 50.39,
        "sharpness_laplacian": 5235.67
      },
      "quality_review_flags": []
    },
    {
      "index": 168,
      "filename": "IMG_6555.JPG",
      "frame_number": 6555,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6555.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 128.82,
        "contrast": 59.93,
        "sharpness_laplacian": 2911.72
      },
      "quality_review_flags": []
    },
    {
      "index": 169,
      "filename": "IMG_6556.JPG",
      "frame_number": 6556,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6556.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 130.93,
        "contrast": 61.06,
        "sharpness_laplacian": 2261.36
      },
      "quality_review_flags": []
    },
    {
      "index": 170,
      "filename": "IMG_6557.JPG",
      "frame_number": 6557,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6557.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "background_small",
      "severity": "low",
      "confidence": 0.82,
      "route": "small_region_mask",
      "rationale_zh": "人物位于远景或只占较小区域；不应因此删除整帧。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.66,
        "contrast": 57.88,
        "sharpness_laplacian": 2783.29
      },
      "quality_review_flags": []
    },
    {
      "index": 171,
      "filename": "IMG_6558.JPG",
      "frame_number": 6558,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6558.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 122.58,
        "contrast": 46.13,
        "sharpness_laplacian": 4079.9
      },
      "quality_review_flags": []
    },
    {
      "index": 172,
      "filename": "IMG_6559.JPG",
      "frame_number": 6559,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6559.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 126.35,
        "contrast": 51.35,
        "sharpness_laplacian": 2296.95
      },
      "quality_review_flags": []
    },
    {
      "index": 173,
      "filename": "IMG_6560.JPG",
      "frame_number": 6560,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6560.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 119.2,
        "contrast": 45.4,
        "sharpness_laplacian": 2566.26
      },
      "quality_review_flags": []
    },
    {
      "index": 174,
      "filename": "IMG_6561.JPG",
      "frame_number": 6561,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6561.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "strong_foreground",
      "severity": "high",
      "confidence": 0.97,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物位于近景或占据较大画面区域，明显遮挡喷泉/背景几何。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.72,
        "contrast": 52.95,
        "sharpness_laplacian": 1734.93
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 175,
      "filename": "IMG_6562.JPG",
      "frame_number": 6562,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6562.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
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      "metrics": {
        "brightness": 127.37,
        "contrast": 50.74,
        "sharpness_laplacian": 2145.91
      },
      "quality_review_flags": []
    },
    {
      "index": 176,
      "filename": "IMG_6563.JPG",
      "frame_number": 6563,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6563.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 128.37,
        "contrast": 48.35,
        "sharpness_laplacian": 2443.48
      },
      "quality_review_flags": []
    },
    {
      "index": 177,
      "filename": "IMG_6564.JPG",
      "frame_number": 6564,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6564.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 124.03,
        "contrast": 56.06,
        "sharpness_laplacian": 1555.67
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 178,
      "filename": "IMG_6565.JPG",
      "frame_number": 6565,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6565.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 131.62,
        "contrast": 61.95,
        "sharpness_laplacian": 1897.22
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 179,
      "filename": "IMG_6566.JPG",
      "frame_number": 6566,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6566.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 128.36,
        "contrast": 59.64,
        "sharpness_laplacian": 2115.14
      },
      "quality_review_flags": []
    },
    {
      "index": 180,
      "filename": "IMG_6567.JPG",
      "frame_number": 6567,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6567.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 132.18,
        "contrast": 63.41,
        "sharpness_laplacian": 1951.1
      },
      "quality_review_flags": [
        "brightness_high_outlier"
      ]
    },
    {
      "index": 181,
      "filename": "IMG_6568.JPG",
      "frame_number": 6568,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6568.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 128.77,
        "contrast": 58.22,
        "sharpness_laplacian": 1764.9
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    },
    {
      "index": 182,
      "filename": "IMG_6569.JPG",
      "frame_number": 6569,
      "split": "train",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6569.JPG",
      "primary_cause": "transient_person",
      "person_visibility": "clear_region",
      "severity": "medium",
      "confidence": 0.94,
      "route": "region_mask_required",
      "rationale_zh": "主要移动人物轮廓清楚，形成局部遮挡，但帧内大部分静态几何仍可使用。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.88,
        "contrast": 54.62,
        "sharpness_laplacian": 2775.96
      },
      "quality_review_flags": []
    },
    {
      "index": 183,
      "filename": "IMG_6570.JPG",
      "frame_number": 6570,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6570.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 125.86,
        "contrast": 54.14,
        "sharpness_laplacian": 2673.57
      },
      "quality_review_flags": []
    },
    {
      "index": 184,
      "filename": "IMG_6571.JPG",
      "frame_number": 6571,
      "split": "test",
      "source": "/local/scratch-2/fy277/temp/diag3dgs/data/nerfonthego-undistorted/fountain/images/IMG_6571.JPG",
      "primary_cause": "no_prominent_transient",
      "person_visibility": "none_visible",
      "severity": "none",
      "confidence": 0.76,
      "route": "retain_with_robust_water_traffic_handling",
      "rationale_zh": "未见明确的主要移动人物；但无干净 reference，且水面、车辆或远处行人仍可能产生残差。",
      "secondary_causes": [
        "dynamic_water_surface",
        "background_traffic_possible"
      ],
      "metrics": {
        "brightness": 126.56,
        "contrast": 53.48,
        "sharpness_laplacian": 1707.83
      },
      "quality_review_flags": [
        "sharpness_low_outlier"
      ]
    }
  ]
}