v3.0
Cool-chic 3.0: A small quantizer change, a giant leap in performance for Cool-chic 🌕 🚀
Improve image compression performance of Cool-chic 2.0 by retaining some of the encoder-side improvements from C3: High-performance and low-complexity neural compression from a single image or video, Kim et al., CVPR 2024.
Notable improvements:
- 17% to 23% rate reduction compared to Cool-chic 2.0 while maintaining identical decoder-side complexity ;
- Better management of the quantization during training thanks to the softround mechanism and the kumaraswamy noise ;
- Overall refactoring of the code for more convenient training.
Detailed results are available on the Cool-chic page.
Bd-rate against different anchors:
| Dataset | Vs. Cool-chic 2 | Vs. Cool-chic 1 | Vs. C3, Kim et al. | Vs. HEVC (HM 16.20) | Vs. VVC (VTM 19.1) | Min decoder complexity [MAC / pixel] | Max decoder complexity [MAC / pixel] | Avg decoder complexity [MAC / pixel] |
|---|---|---|---|---|---|---|---|---|
| kodak | - 19.4 % | - 29.1 % | - 1.6 % | - 14.6 % | + 6.6 % | 299 | 2291 | 1841 |
| clic20-pro-valid | - 16.8 % | / | + 3.3 % | - 21.4 % | + 2.3 % | 545 | 2295 | 1897 |
| jvet | - 23.0 % | / | / | - 13.7 % | + 25.4 % | 300 | 2295 | 1680 |
