Outcome. Linear MS-SSIM versus amplitude L2: -1.025 mean JOD. PU21 contribution over linear MS-SSIM: +0.393 mean JOD. PU21-MS-SSIM versus the requested 9.372 target: -1.132 JOD.
12-scene mean JOD
Independent LR selection
Aggregate metrics
| Loss | JOD | PSNR | SSIM |
|---|---|---|---|
| Amplitude L2 | 8.872 | 25.91 | 0.6283 |
| Charbonnier | 8.953 | 27.86 | 0.7004 |
| Direct CVVDP | 9.065 | 18.08 | 0.3759 |
| Luma heatmap × Charb | 9.081 | 28.42 | 0.7088 |
| Linear MS-SSIM | 7.847 | 23.44 | 0.6873 |
| PU21-MS-SSIM | 8.240 | 19.84 | 0.7261 |
Physical mapping
PU21 receives reconstruction and target intensity after the exact active CVVDP display photometry. No scene-wise normalization is applied inside either loss. PU normalization is fixed at 10,000 nit.
{
"display_name": "standard_4k",
"eotf": "sRGB",
"y_peak_nits": 200.0,
"contrast": 1000.0,
"e_ambient_lux": 250.0,
"k_reflection": 0.005,
"y_black_nits": 0.2,
"y_reflection_nits": 0.3978873577297384,
"mapping": "L_nits=(200-0.2)*I_linear+0.2+0.39788735773"
}Maximum observed clipping fraction: lower 0.000e+00; upper 0.000e+00.
Per-scene final hard JOD
| Scene | Amplitude L2 | Charbonnier | Direct CVVDP | Luma heatmap × Charb | Linear MS-SSIM | PU21-MS-SSIM | PU−Linear |
|---|---|---|---|---|---|---|---|
| Anime2 | 8.448 | 8.100 | 9.041 | 8.774 | 7.803 | 8.168 | +0.365 |
| Bloom | 8.873 | 9.080 | 8.944 | 9.113 | 7.699 | 7.934 | +0.235 |
| Castle | 8.772 | 9.049 | 8.801 | 8.996 | 7.535 | 8.070 | +0.535 |
| Glade | 8.745 | 8.841 | 9.016 | 8.845 | 7.588 | 8.299 | +0.711 |
| Lounge | 9.106 | 9.332 | 9.332 | 9.471 | 8.504 | 8.719 | +0.215 |
| Meridian | 9.058 | 9.227 | 9.159 | 9.302 | 7.839 | 8.204 | +0.365 |
| Rushmore | 8.819 | 8.667 | 8.893 | 8.691 | 7.457 | 8.027 | +0.570 |
| Showgirl | 8.823 | 8.824 | 9.133 | 9.171 | 8.034 | 8.303 | +0.269 |
| Snow | 9.296 | 9.475 | 9.259 | 9.502 | 8.821 | 8.783 | -0.038 |
| Toys | 9.083 | 9.182 | 9.379 | 9.410 | 7.707 | 8.268 | +0.561 |
| Type | 8.486 | 8.471 | 8.824 | 8.499 | 7.337 | 7.781 | +0.444 |
| Water | 8.952 | 9.190 | 8.998 | 9.198 | 7.837 | 8.322 | +0.485 |
Native ROI · hard binary
Anime2
Linear MS-SSIM
JOD 7.803 · PSNR 21.26 · SSIM 0.6764
PU21-MS-SSIM
JOD 8.168 · PSNR 17.71 · SSIM 0.7110
Native ROI · hard binary
Bloom
Target
Linear MS-SSIM
JOD 7.699 · PSNR 16.56 · SSIM 0.6242
PU21-MS-SSIM
JOD 7.934 · PSNR 15.04 · SSIM 0.7537
Native ROI · hard binary
Castle
Target
Linear MS-SSIM
JOD 7.535 · PSNR 18.94 · SSIM 0.5815
PU21-MS-SSIM
JOD 8.070 · PSNR 14.96 · SSIM 0.6867
Native ROI · hard binary
Glade
Target
Linear MS-SSIM
JOD 7.588 · PSNR 20.28 · SSIM 0.6327
PU21-MS-SSIM
JOD 8.299 · PSNR 15.74 · SSIM 0.6805
Native ROI · hard binary
Lounge
Target
Linear MS-SSIM
JOD 8.504 · PSNR 31.33 · SSIM 0.8663
PU21-MS-SSIM
JOD 8.719 · PSNR 24.85 · SSIM 0.8483
Native ROI · hard binary
Meridian
Target
Linear MS-SSIM
JOD 7.839 · PSNR 24.89 · SSIM 0.7343
PU21-MS-SSIM
JOD 8.204 · PSNR 20.97 · SSIM 0.7465
Native ROI · hard binary
Rushmore
Target
Linear MS-SSIM
JOD 7.457 · PSNR 22.16 · SSIM 0.6015
PU21-MS-SSIM
JOD 8.027 · PSNR 17.43 · SSIM 0.6435
Native ROI · hard binary
Showgirl
Target
Linear MS-SSIM
JOD 8.034 · PSNR 26.81 · SSIM 0.6905
PU21-MS-SSIM
JOD 8.303 · PSNR 24.64 · SSIM 0.6592
Native ROI · hard binary
Snow
Target
Linear MS-SSIM
JOD 8.821 · PSNR 30.62 · SSIM 0.9050
PU21-MS-SSIM
JOD 8.783 · PSNR 26.16 · SSIM 0.9268
Native ROI · hard binary
Toys
Target
Linear MS-SSIM
JOD 7.707 · PSNR 25.51 · SSIM 0.7604
PU21-MS-SSIM
JOD 8.268 · PSNR 25.62 · SSIM 0.8192
Native ROI · hard binary
Type
Target
Linear MS-SSIM
JOD 7.337 · PSNR 22.90 · SSIM 0.5207
PU21-MS-SSIM
JOD 7.781 · PSNR 19.03 · SSIM 0.4767
Native ROI · hard binary
Water
Target
Linear MS-SSIM
JOD 7.837 · PSNR 20.04 · SSIM 0.6541
PU21-MS-SSIM
JOD 8.322 · PSNR 15.92 · SSIM 0.7616