| 摘要 |
A method and system for entropy coding, where parameters indicative of a coded signal are mapped into codeword indexes so that a decoder can reconstruct the coded signal from the codeword indexes. When the parameter space is limited such that the coding is inefficient in that the codewords are not arranged in an orderly or contiguous fashion corresponding to the parameters, a sorting step is used to sort the parameters into different groups so that parameters in different groups are mapped into the codeword indexes in different manners such that the codeword indexes corresponding to the parameters are assigned in a contiguous and orderly manner. The sorting can be based on the absolute values of the parameters in relation with a selected value. In the decoding process, the codewords indexes are also sorted into different groups based on the value of codewords indexex in relation to the selected value.
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