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by JyrkiAlakuijala
884 days ago
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It would be more correct to say that PNG uses the GIF algorithm than that WebP uses the PNG algorithm. WebP's select predictor and some other predictors are used in JPEG XL. The same for 2d locality map in backward references. Both are able to use delta palettes. JPEG XL goes further by having a mixed mode where some entries are deltas for smooth gradients while others are usual palette entries. |
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