MOTION-VIDEO ENCODING APPARATUS, MOTION-VIDEO DECODING APPARATUS, MOTION-VIDEO ENCODING METHOD, AND MOTION-VIDEO DECODING METHOD

摘要

Provided is a motion-video encoding method, wherein, when an intra prediction unit (4) is to generate an intra prediction image by implementing intra-frame prediction using an encoded image signal within a frame, the intra prediction unit (4) selects a filter from among one or more filters prepared in advance, in accordance with the states of various parameters related to the encoding of the block to be filtered, and implements filtering of the prediction image using the filter. In such a way, prediction errors to be generated locally can be reduced, to improve image quality.