VIDEO CODING APPARATUS AND VIDEO CODING METHOD

摘要

A video coding apparatus including a dividing part that outputs the coding target picture divided for each coding unit (basic CU); a prediction processor that generates a prediction image by performing one of intra prediction and inter-screen prediction; a difference calculator that generates a difference image by calculating a difference between the generated prediction image and an image corresponding to the prediction image in the coding target picture; a residual coder that generates a residual coefficient by performing transform processing and quantization processing on the generated difference image; an integration unit that integrates a plurality of basic CUs included in an N×N-pixel region into one new CU, and a code string generator that generates a code string corresponding to the post-integration new CU by performing variable-length coding and arithmetic coding on coding information and the residual coefficient.

主权项

1. A video coding apparatus that codes a coding target picture according to a predetermined coding standard to generate a code string, the video coding apparatus comprising:
a dividing part that outputs the coding target picture divided for each coding unit (basic CU); a prediction processor that generates a prediction image by performing one of intra prediction and inter-screen prediction in each prediction unit (basic PU) having a size less than or equal to that of the basic CU, the basic PU being a unit obtained by dividing the output basic CU into at least one; a difference calculator that generates a difference image by calculating a difference between the generated prediction image and an image corresponding to the prediction image in the coding target picture; a residual coder that generates a residual coefficient by performing transform processing and quantization processing on the generated difference image; an integration unit that integrates a plurality of basic CUs included in an N×N-pixel region into one new CU, (1) when pluralities of basic CUs and basic PUs belonging to the N×N-pixel region have an identical block size, and (2) when pieces of prediction information on the plurality of basic PUs belonging to the N×N-pixel region are identical to each other; and a code string generator that generates the code string with respect to the post-integration new CU by performing variable-length coding and arithmetic coding on coding information and the residual coefficient, the coding information being set to the post-integration new CU, the residual coefficient relating to the plurality of pre-integration basic CUs belonging to the post-integration new CU.