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MODIFICATION OF CODEWORDS IN DICTIONARY USED FOR EFFICIENT CODING OF DIGITAL MEDIA SPECTRAL DATA
MODIFICATION OF CODEWORDS IN DICTIONARY USED FOR EFFICIENT CODING OF DIGITAL MEDIA SPECTRAL DATA
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机译:用于数字媒体光谱数据高效编码的词典中的代码字修改
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摘要
Coding of spectral data by representing certain portions of the spectral data as a scaled version of a code-vector, where the code-vector is chosen from either a fixed predetermined codebook or a codebook taken from a baseband. Various optional features are described for modifying the code-vectors in the codebook according to some rules which allow the code-vector to better represent the data they are modeling. The code-vector modification comprises a linear or non-linear transform of one or more code-vectors, such as, by exponentiation, negation, reversing, or combining elements from plural code-vectors.
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