METHOD AND DEVICE FOR PICTURE ENCODING, METHOD AND DEVICE FOR PICTURE DECODING AND PROVISION MEDIUM

摘要

PROBLEM TO BE SOLVED: To expand so that a 4:2:2 format and a 4:4:4 format can be used at an MPEG 4 by having a flag for indicating an encoding state of a color difference block and a flag for indicating the encoding state of the color difference block corresponding to kinds of color differences adaptively changed. SOLUTION: A VOP structural part 2n constitutes a VOP from an output of a VO structural part 1. A VOP encoding part 3n encodes an output of the VOP structural part 2n by a system based on a standard such as an MPEG or an H 263. That is, reading of a flag for indicating an encoding state of a color difference block and of a flag for indicating the encoding state of the color difference block corresponding to kinds of color differences Cb and Cr is adaptively changed and encoded. A bit stream obtained as a result is outputted to a multiplex part 4. The multiplex part 4 multiplexes the bit stream from VOP encoding parts 31 to 3N and transmits it through a transmission line 5.