Moving image coding method and apparatus, and moving image coding and decoding system

摘要

A moving image coding method and its apparatus are disclosed, in which a frame of input image is divided into N regions so that each boundary may be short, one of the divided regions is selected in an arbitrary sequence in every frame to be coded, the coding mode is determined as intra-frame coding in this selected region, and the coding mode is determined by the characteristic of the frame image in other regions so as to code according to this coding mode.