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METHOD AND DEVICE FOR CONTEXT-ADAPTIVE BINARY ARITHMETIC CODING A SEQUENCE OF BINARY SYMBOLS REPRESENTING A SYNTAX ELEMENT RELATED TO VIDEO DATA
METHOD AND DEVICE FOR CONTEXT-ADAPTIVE BINARY ARITHMETIC CODING A SEQUENCE OF BINARY SYMBOLS REPRESENTING A SYNTAX ELEMENT RELATED TO VIDEO DATA
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机译:上下文关联的二进制算术编码表示与视频数据相关的符号元素的二进制符号序列的方法和装置
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摘要
The present principles relate to a method and device for context-adaptive binary arithmetic coding a sequence of binary symbols representing a syntax element related to video data or a syntax element relative to a video data. The method comprises, for each binary symbol of the sequence of binary symbols:—obtaining (100) a context value from a context model defined for the binary symbol, said context value comprising bits representing the probability, called a first probability p, for the binary symbol to be equal to a binary value;—determining (110) a second probability p′ by modifying said first probability p according to at least one previously coded binary symbol of the sequence of binary symbols;—arithmetic coding (120) the binary symbol based on said second probability p′; and—updating and storing (130) the first probability p of said context value
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