METHOD AND APPARATUS FOR ENCODING VIDEO BY MOTION PREDICTION USING ARBITRARY REGION, AND METHOD AND APPARATUS FOR DECODING VIDEO BY MOTION PREDICTION USING ARBITRARY REGION

摘要

FIELD: information technology.SUBSTANCE: coding element is corrected based on image characteristics with simultaneous enlargement of the maximum size of the coding element taking into account the size of the image. The video decoding apparatus has a receiver which receives and analyses an encoded image bit stream. Also disclosed is an apparatus having a processor, which determines coding elements with a hierarchical structure, which are data entities in which an encoded image is decoded. The apparatus also determines sub-elements for predicting coding elements using information indicating the form of division of coding elements and information on coding element prediction elements obtained via analysis from the received bit stream. The sub-elements have regions obtained by partitioning at least either the height or the width of coding elements according to arbitrary ratios.EFFECT: high efficiency of encoding and decoding images.5 cl, 21 dwg, 1 tbl