A Novel Binarization Scheme in Arithmetic Coding
视频编码中算术编码的二进制化研究

Binarization is an elementary step in the framework of contextbased adaptive binary arithmetic coding.It is introduced to simplify the context modeling and the subsequent arithmetic coding process.In this paper,we propose a novel binarization scheme for arithmetic coding.Based on the observation that the numbers of nonzero coefficients in neighboring blocks are highly correlated,the number of nonzero coefficients of a block is specifically binarized according to the numbers of nonzero coefficients of its top and left neighbors.In addition,a novel mapping rule is designed to map a syntax element to a code number,according to the observed features of probability distribution.Experimental results show that compared to the conventional scheme,this scheme can reduce decoding complexity with comparable coding efficiency.