Image signal transforming method, image signal inversely-transforming method, image encoding apparatus, image encoding method, image encoding program, image decoding apparatus, image decoding method, and image decoding program

摘要

An aspect of an image signal transforming method is a method of generating one or more transformed samples from a plurality of input samples, which includes a first transformed sample generating step of performing a first filtering process by a filter, on at least one first input sample (an input sample from a terminal) out of a plurality of first input samples used for generation of a first transformed sample, to generate first filtered data, and performing a first arithmetic process (subtraction by a subtractor) on another first input sample not used for the generation of the first filtered data (an input sample from another terminal), and the first filtered data generated, to generate the first transformed sample.