DEVICE, METHOD AND PROGRAM FOR IMAGE PREDICTION ENCODING, DEVICE, METHOD AND PROGRAM FOR IMAGE PREDICTION DECODING, AND ENCODING/DECODING SYSTEM AND METHOD.

摘要

A device for image prediction encoding is provided with a region dividing means for dividing an input image into a plurality of blocks, a prediction signal generating means for generating a prediction signal to a pixel signal included in a block to be processed among the plurality of blocks, a residual signal generating means for generating the residual signal between the pixel signal of the block to be processed and the prediction signal, a signal encoding means for generating a compressed signal by encoding the residual signal, and a storage means for decompressing the compressed signal and storing the decompressed signal as the reproduced pixel signal, wherein the prediction signal generating means sub-divides the block to be processed into a plurality of sub-regions, at least one of which has a non-square shape, the length of a first side of the non-square shaped sub-region being longer than the length of a second side different from the length of the first side.