VIDEO CODING DEVICE, VIDEO CODING METHOD, VIDEO CODING PROGRAM, VIDEO DECODING DEVICE, VIDEO DECODING METHOD, AND VIDEO DECODING PROGRAM

摘要

Provided is a video coding device with which each picture of a video is partitioned into a first block at a prescribed size which is further partitioned into one or a plurality of second blocks, and the video coded in block units. A quantization parameter computation unit (110) computes a second block quantization parameter. A predict quantization parameter derivation unit (114) derives a second block predict quantization parameter, using a quantization parameter of a third block which is adjacent to the left of the second block and a fourth block which is adjacent above the second block. A differential quantization parameter generating unit (111) generates a second block differential quantization parameter from the difference of the second block quantization parameter and the predict quantization parameter. A first coding bit string generating unit (112) codes the second block differential quantization parameter.