发明名称 |
METHOD AND APPARATUS FOR ENCODING OR DECODING BLOCKS OF PIXEL |
摘要 |
The invention concerns a method and a device for processing a current pixel block of an image using a palette prediction mode according to HEVC RExt. The mode uses a current palette to build a predictor block of indexes to predict the current pixel block. The current palette comprises entries associating entry indexes with pixel values. The method comprises predicting the current palette from entries of two or more palettes that are palettes previously used to process blocks of pixels. A palette predictor may be used that is built from the two or more palettes, preferably from the last used palette for a coding unit in the current coding entity and from the previously used palette for which a flag bitmap indicates whether or not its elements have been copied into the last used palette. Accordingly, the coding of the palette mode is improved. |
申请公布号 |
WO2015086718(A2) |
申请公布日期 |
2015.06.18 |
申请号 |
WO2014EP77297 |
申请日期 |
2014.12.10 |
申请人 |
CANON KABUSHIKI KAISHA;CANON EUROPE LTD |
发明人 |
LAROCHE, GUILLAUME;GISQUET, CHRISTOPHE;ONNO, PATRICE |
分类号 |
H04N19/463 |
主分类号 |
H04N19/463 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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