DiagSplat · single-image boundary critic
结果：4/8 个边缘块判定 UNDERCOVERED。每个 RGB 和 residual 都是独立 PNG，判断时逐张输入，不存在 composite 下采样。HTML 中并排显示只用于人类审计。
轮廓：白线是 q≥0.5 hard boundary；洋红线是 q≥0.1 soft support。 residual 是使用旧 mask 训练出的 Round-1 render 计算的有偏辅助证据： mask 外 residual 明显时一定错误，但 residual 低不能证明正确。
Judge ONE boundary block of frame 0002 at a time. You receive two separate high-resolution images for the same crop: 1. RGB: the true observed image with mask contours. 2. RESIDUAL: a Turbo heatmap with the same mask contours. Contour legend: - white/black thin line: hard contamination boundary q >= 0.5 - magenta/black thin line: outer soft-support boundary q >= 0.1 Object: a very-near, defocused foreground parasol. Its full opaque body, translucent fringe, defocus halo, and any color/blur trail are contamination. Residual construction: mean absolute RGB difference between dirty observed and the Round-1 3DGS render, Gaussian sigma 1.8, clipped at 0.30, displayed with Turbo. The render was trained using an earlier mask and can reproduce leaked transient pixels. Therefore: - coherent residual outside the mask proves UNDERCOVERED; - low residual outside the mask does NOT prove OK. Return exactly: status: OK or UNDERCOVERED severity: none, small, medium, or large direction: image-relative direction(s), or none reason: one concise sentence grounded first in RGB semantic support and only secondarily in residual.
Direction: right and lower-right
Reason: In RGB, several defocused wooden spoke tips continue beyond the magenta soft-support boundary on the lower-right arc; small coherent residual immediately outside the contour supports the failure.
Direction: right and lower-right
Reason: Multiple long orange spokes and their blur trails visibly extend well past the magenta soft-support boundary into the floor region, even where the biased residual is weak.
Direction: right
Reason: The lower and middle wooden spokes cross the magenta boundary by a clearly visible margin, so neither the hard mask nor the outer soft envelope contains the complete parasol.
Direction: right and lower-right
Reason: A wooden spoke and its defocused continuation reach through the outer magenta contour near the lower-right part of this crop; residual outside the contour is faint but cannot invalidate the RGB evidence.
Direction: none
Reason: The magenta soft-support boundary stays outside the visible paper edge and wooden tips across this upper-right arc, with no coherent RGB continuation beyond it.
Direction: none
Reason: All visible defocused paper and protruding rib tips remain below the outer magenta boundary; the region above it is clean background in RGB.
Direction: none
Reason: The upper soft contour provides a clear margin beyond every visible rib tip and blurred paper edge, while the residual outside is background-like.
Direction: none
Reason: The visible umbrella support lies entirely below the magenta soft boundary in this top-left block, leaving a clean RGB band outside the mask.
