FIELD: data processing.
SUBSTANCE: invention relates to the image encoding unit encoding and decoding means according to the palette. Determining other than equal to the “copy from above” prediction mode prediction mode as the prediction mode for the indexes unit current index decoding, when the current index follows the previous index in accordance with having the associated prediction mode equal to the “copy from above” decoding order. Not performing used for the current index in the bitstream prediction mode encoding into the bitstream, when having the associated prediction mode current index follows the previous index in accordance with the encoding order, having equal to the “copy from above” prediction mode, and the other than equal to the “copy from above” prediction mode prediction mode is the current index encoding prediction mode.
EFFECT: technical result consists in increase in the palette encoding mode efficiency.
8 cl, 22 dwg, 1 tbl
