Image coding apparatus, image coding method, image decoding apparatus and image decoding method

摘要

A coded bit stream 30 generated on a coding side consists of a VO header 30a, a VOL header 30b, a GOV header 30c, a VOP header 30d andVOPdata30e, and the VOL header 30bmultiplexes an object intra-coded indicator signal 7' indicating whether all the VOP data 30e contained in a VOL or GOV are intra coded or not. This enables a decoding side to recognize whether all the VOP data 30e contained in the VOL or GOV in the coded bit stream 30 are intra coded or not by only analyzing the object intra-coded indicator signal 7'. This can facilitate such processings as frame skip control or random access of the VOPs.