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Analysis of conditional PDF-Based split VQ
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DOI：10.1109/LSP.2007.901685.png)
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摘要
En 中文
The split vector quantization (SVQ) method results in a coding loss due to the independent quantization of split subvectors. To recover the coding loss, conditional pdf-based split vector quantization methods were proposed recently. For a multivariate Gaussian source, we theoretically derive the expression of rate-distortion (R/D) performance for conditional pdf-based split vector quantization (CSVQ) method, using high rate quantization theory and optimum bit allocation. We also derive the rate-distortion performance expression of traditional SVQ method and, thus, quantify the coding gain of CSVQ method over SVQ method.
Keyword:
conditional pdf
high rate quantization
multivariate Gaussian
split vector quantization
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期刊
IF:
9.6
论文数:
1.1W
被引数:
1.7W
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