16 September 1994 Sequential vector quantization of perceptually windowed DCT coefficients
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Proceedings Volume 2308, Visual Communications and Image Processing '94; (1994) https://doi.org/10.1117/12.185910
Event: Visual Communications and Image Processing '94, 1994, Chicago, IL, United States
Abstract
In order to provide a high quality of the reconstructed images with a reduced transmission bit rate, taking into account both statistical redundancy and perceptual characteristics of the DCT coefficients, we apply perceptual windowing and sequential vector quantization to encoding of the coefficients: first, the coefficients are decomposed into 16 slightly overlapping subvectors so as that each subvector has reasonable dimension and conveys key information about one directional image, and then the decomposed subvectors are quantized in a sequential manner. The proposed scheme is good at encoding images with a wide range of transmission bit rates which can be easily controlled by adjusting only the stopping criterion of the sequential vector quantizer.
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Dong-Wook Kang, Dong-Wook Kang, Jun Seok Song, Jun Seok Song, Hee Bok Park, Hee Bok Park, ChoongWoong Lee, ChoongWoong Lee, } "Sequential vector quantization of perceptually windowed DCT coefficients", Proc. SPIE 2308, Visual Communications and Image Processing '94, (16 September 1994); doi: 10.1117/12.185910; https://doi.org/10.1117/12.185910
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