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

摘要

It is possible to encode and decode a dynamic image containing images of different bandwidths with a high compression ratio. In a dynamic image encoding device (10), a prediction signal generator (121) extracts a space frequency component of a predetermined band from a predetermined extraction reference image other than an object reference image used as an image for predicting an object image serving as an object of encoding among reference images stored in a memory (108). The prediction signal generator (121) generates a prediction signal for the object image from the space frequency component extracted from the target reference image.