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- W2152037928 abstract "Vector quantization (VQ) provides many attractive features for image coding with high compression ratios. However, initial studies of image coding with VQ have revealed several difficulties, most notably edge degradation and high computational complexity. We address these two problems and propose a new coding method, classified vector quantization (CVQ), which is based on a composite source model. Blocks with distinct perceptual features, such as edges, are generated from different subsources, i.e., belong to different classes. In CVQ, a classifier determines the class for each block, and the block is then coded with a vector quantizer designed specifically for that class. We obtain better perceptual quality with significantly lower complexity with CVQ when compared to ordinary VQ. We demonstrate with CVQ visual quality which is comparable to that produced by existing coders of similar complexity, for rates in the range 0.6-1.0 bits/pixel." @default.
- W2152037928 created "2016-06-24" @default.
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- W2152037928 date "1986-01-01" @default.
- W2152037928 modified "2023-09-23" @default.
- W2152037928 title "Classified Vector Quantization of Images" @default.
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- W2152037928 doi "https://doi.org/10.1109/tcom.1986.1096468" @default.
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