Picture encoding method and apparatus and picture decoding method and apparatus

摘要

A picture encoding apparatus characterized by comprising: receiving means for receiving an input video signal; first encoding means (103-105) for encoding the video signal by using a reference picture signal to generate a video code stream, the first encoding means including a frame memory (110) for storing a local decoded picture signal generated in encoding the video signal as the reference picture signal, and motion compensation means (111) for subjecting to motion compensation the reference picture signal read out from the frame memory; second encoding means (113-115) for encoding the reference picture signal motion-compensated by the motion compensation means to generate a reference picture code stream; and multiplexing means (117) for multiplexing the video code stream with the reference picture code stream to generate an output code stream.