Patent ID: 7634148

Claim:
An image encoding apparatus comprising: importing means for importing an input image as an object for coding; region decomposing means for decomposing the input image imported by the importing means, into a plurality of coding regions; predicting means for obtaining a differential signal by either intra-frame prediction or inter-frame prediction, for each of the coding regions resulting from the decomposition by the region decomposing means, and for generating the obtained differential signal as a transformation object signal; transforming means for generating a transformed sample, using the transformation object signal generated by the predicting means, as an input sample, based on an image signal transforming method of generating one or more transformed samples from a plurality of input samples, said transforming means including means for performing a filtering process on at least one first input sample out of a plurality of first input samples used for generation of a first transformed sample, to generate first filtered data, said transforming means includes means for performing a first arithmetic process on another first input sample not used for the generation of the first filtered data and the first filtered data generated, to generate the first transformed sample, and for defining the generated transformed sample as a transformation coefficient, thereby transforming the transformation object signal into the transformation coefficient; and encoding means for encoding the transformation coefficient obtained by the transforming means.