Motion picture prediction coding device, motion picture prediction coding procedure, motion picture prediction coding program, motion image prediction decoding device, motion image prediction decoding procedure and motion picture prediction decoding program

摘要

A predictive video coding device comprising: input means that accept the input of a plurality of images that constitute a video sequence; encoding means encoding each of the input images by a procedure, either intra-frame prediction or inter-frame prediction, to generate compressed image data that includes a random access image that serves as a random access image , and that encode data that provide display order information for each of the images; restoration means that decode the compressed image data generated to restore a reproduced image; image storage media that store the restored reproduced image as a reference image to be used for encoding a subsequent image; and memory management means that control the image storage means, in which after the end of an encoding process to generate the random access image, the memory management means update the image storage means by establishing each reference image stored in the image storage media, except the random access image, as not used as a reference image, the image storage media being updated immediately before encoding an image having display order information greater than the display order information of the random access image