METHOD AND APPARATUS FOR ENCODING VIDEO, AS WELL AS METHOD AND APPARATUS FOR DECODING VIDEO, SUPPLEMENTED BY ARITHMETIC CODING

摘要

FIELD: information technology.SUBSTANCE: invention relates to decoding video based on arithmetic decoding. Disclosed is method of decoding a video through symbol decoding, said method including: parsing symbols of image blocks from a received bit stream; classifying a current symbol into a prefix bit string and a suffix bit string based on a threshold value determined according to a size of a current block; performing arithmetic decoding by using an arithmetic decoding method determined for each of prefix bit string and suffix bit string; and performing inverse binarisation by using a binarisation method determined for each of prefix bit string and suffix bit string.EFFECT: technical result is improved efficiency of symbol decoding process.1 cl, 19 dwg, 2 tbl