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METHOD AND APPARATUS FOR DETERMINING CONTEXT MODEL OF TRANSFORM COEFFICIENT LEVEL IN ENTROPY CODING AND DECODING
METHOD AND APPARATUS FOR DETERMINING CONTEXT MODEL OF TRANSFORM COEFFICIENT LEVEL IN ENTROPY CODING AND DECODING
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机译:确定熵编码和解码中变换系数水平的上下文模型的方法和装置
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摘要
Provided are a method and apparatus for determining a contextmodel for entropy encoding and decoding of a transformationcoefficient. According to the method and apparatus, a context setindex ctxset is obtained based on color component information of atransformation unit, a location of a current subset, and whether thereis a significant transformation coefficient having a value greater than afirst critical value in a previous subset, and a context offset cl. isobtained based on a length of a previous transformation coefficienthaving consecutive 1s. Also, a context index ctxids for entropyencoding and decoding of a first critical value flag is determinedbased on the obtained context set index and the context offset.
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