Overfitted image coding at reduced complexity
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arXiv
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| Hauptverfasser: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913269811249152 |
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| author | Blard, Théophile Ladune, Théo Philippe, Pierrick Clare, Gordon Jiang, Xiaoran Déforges, Olivier |
| author_facet | Blard, Théophile Ladune, Théo Philippe, Pierrick Clare, Gordon Jiang, Xiaoran Déforges, Olivier |
| contents | Overfitted image codecs offer compelling compression performance and low decoder complexity, through the overfitting of a lightweight decoder for each image. Such codecs include Cool-chic, which presents image coding performance on par with VVC while requiring around 2000 multiplications per decoded pixel. This paper proposes to decrease Cool-chic encoding and decoding complexity. The encoding complexity is reduced by shortening Cool-chic training, up to the point where no overfitting is performed at all. It is also shown that a tiny neural decoder with 300 multiplications per pixel still outperforms HEVC. A near real-time CPU implementation of this decoder is made available at https://orange-opensource.github.io/Cool-Chic/. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_11651 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Overfitted image coding at reduced complexity Blard, Théophile Ladune, Théo Philippe, Pierrick Clare, Gordon Jiang, Xiaoran Déforges, Olivier Image and Video Processing Overfitted image codecs offer compelling compression performance and low decoder complexity, through the overfitting of a lightweight decoder for each image. Such codecs include Cool-chic, which presents image coding performance on par with VVC while requiring around 2000 multiplications per decoded pixel. This paper proposes to decrease Cool-chic encoding and decoding complexity. The encoding complexity is reduced by shortening Cool-chic training, up to the point where no overfitting is performed at all. It is also shown that a tiny neural decoder with 300 multiplications per pixel still outperforms HEVC. A near real-time CPU implementation of this decoder is made available at https://orange-opensource.github.io/Cool-Chic/. |
| title | Overfitted image coding at reduced complexity |
| topic | Image and Video Processing |
| url | https://arxiv.org/abs/2403.11651 |