Lossy image compression using palettization of locally mixed colors
An apparatus includes a processor that is configured to select a palette entry in the palette for coding a value of a pixel of the image block; obtain respective palette indexes of neighboring pixels of the pixel; select, using the respective palette indexes, an entropy code for coding an index of t...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An apparatus includes a processor that is configured to select a palette entry in the palette for coding a value of a pixel of the image block; obtain respective palette indexes of neighboring pixels of the pixel; select, using the respective palette indexes, an entropy code for coding an index of the palette entry; and code the palette entry using the entropy code. A method includes obtaining respective palette indexes of neighboring pixels of a pixel of the image block; selecting an entropy code using the respective palette indexes; decoding, from a encoded bitstream, an index of a palette entry; and setting a value of the pixel using the palette entry. |
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