DYNAMIC IMAGE ENCODING DEVICE, DYNAMIC IMAGE ENCODING METHOD, DYNAMIC IMAGE ENCODING PROGRAM, DYNAMIC IMAGE DECODING DEVICE, DYNAMIC IMAGE DECODING METHOD, AND DYNAMIC IMAGE DECODING PROGRAM

摘要

It is possible to effectively encode dynamic image data by deciding a prediction signal without using a motion vector. A dynamic image encoding device (100) includes: a region division unit (101) for dividing a frame image constituting dynamic image data as an object to be encoded into a plurality of regions; an encoding unit (104) for encoding images of the respective regions; an inverse conversion unit (105) and an addition unit (106) for generating a reproduction image of the encoded image; a storage unit (107) for storing reproduced image; a prediction generation unit (108) for searching for a region of an image adjacent to the region of the image to be encoded in a predetermined positional relationship and having a high correlation with the reproduced image of the template region as a part of the reproduced image, from the reproduced image, and deciding a prediction signal according to the searched region and the positional relationship; and a subtraction unit (102) for generating a differential signal between the prediction signal and the encoding object image as a signal for encoding.