SlowGuess/NeurIPS_2023_OCR huggingface dataset:
Figure 9: MSSSIM-BPP curve on Kodak. Idempotent codes are marked as idemp, near-idempotent codec are marked as near id and non-idempotent codec are marked as non id. First-time compression performance is plotted in dotted line, and re-compression performance (upto 50 times) is plotted in solid line. All models are optimized for minimizing MSE.
Figure 10: PSNR drop upto 50 re-compression on Kodak. Idempotent codes are marked as idemp, near-idempotent codec are marked as near id and non-idempotent codec are marked as non id. First-time PSNR is annotated in  $(\cdot)$ .
Figure 11: MS-SSIM drop upto 50 re-compression on Kodak. Idempotent codesc are marked as idemp, near-idempotent codec are marked as near id and non-idempotent codec are marked as non id. First-time MS-SSIM is annotated in  $(\cdot)$ . All models are optimized for minimizing MSE.
Ground-truth
JPEG2000(50-th).BPP=0.798,PNSR=31.98
Balle2018(50-th). BPP=0.784, PNSR=18.25
Figure 12: Qualitative comparison on reconstructed kodim06 image after 50 times re-compression.
Ours idempotent(50-th). BPP=0.953, PNSR=35.01
JPEG2000(50-th).BPP=0.800,PNSR=32.86
Balle2018(50-th). BPP=0.590, PNSR=17.75
Figure 13: Qualitative comparison on reconstructed kodim11 image after 50 times re-compression.
Ours idempotent(50-th). BPP=0.856, PNSR=35.12
JPEG2000(50-th).BPP=0.800,PNSR=26.12
Balle2018(50-th). BPP=1.949, PNSR=8.87
Ours idempotent(50-th). BPP=1.806, PNSR=32.91
Figure 14: Qualitative comparison on reconstructed kodim13 image after 50 times re-compression.
JPEG2000(50-th).BPP=0.798,PNSR=30.08
Balle2018(50-th). BPP=0.844, PNSR=17.40
Figure 15: Qualitative comparison on reconstructed kodim24 image after 50 times re-compression.
Ours idempotent(50-th). BPP=1.129, PNSR=34.11