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

When encoding/decoding a dynamic image, it is possible to effectively compress a dynamic image having different signal bands. A dynamic encoding device (13) measures a band of an object image to be encoded and a band of a reference image by a band analyzer (10) and generates band-associated information representing these bands. According to the band-associated information, a prediction signal generator (9) generates a prediction signal from the reference image so as to match with the band of the object image. A differential device (2) obtains a difference between the object image and the prediction signal and generates a differential signal. A converter (3) and a quantizer (4) encode the differential signal and generate an encoded differential signal. An inverse quantizer (5) and an inverse converter (6) decode the encoded differential signal and generate decoded differential signal. An adder (7) adds the prediction signal to the decoded differential signal and generates a reproduction image. An output terminal (12) outputs at least the encoded differential signal and the band-associated information.