English to French Science Patents image coding

After classification, the pixels of a block can be converted into color indices according to the major color set selected. A prédictive coding method is applied to the indices, where a pixel line can be predicted by three different modes, including horizontal mode (i.e., copy index mode), vertical mode (i.e., copy above mode) and normal mode (i.e., escape mode).

In copy index mode, starting from the first pixel, one or more consecutive indices are copied from the first pixel. The index of the first pixel is signaled.

wherein the palette coding modes include run type modes comprising a copy-index mode and a copy-above mode;