Patent ID: 9462271
Filing Date: 2016-10-04
CPC Classification: H04N

Claim Text:
1. An image encoding device comprising: a block dividing unit for dividing an inputted image which comprises a luminance signal and a color difference signal into blocks each of which is a unit for a prediction process; a prediction image generating unit for carrying out an intra prediction process on the luminance signal and a color difference signal of a target block using an intra prediction parameter to generate a prediction image; and a variable length encoding unit for performing a variable-length-encoding process on the intra prediction parameter, wherein the prediction image generating unit carries out the intra prediction process on the color difference signal of the target block by using an intra prediction parameter which is the same as an intra prediction parameter which the prediction image generating unit used to carry out the intra prediction process on the luminance signal of the target block or by using an average prediction process, and the variable length encoding unit generates a coded data indicating one of the intra prediction processes on the color difference signal of the target block, the intra prediction processes include at least the intra prediction process using the intra prediction parameter used for the luminance signal of the target block and the intra prediction process using the average prediction process.