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- W2109887606 abstract "A coding method for wavelet coefficients of images using vector quantization, called successive approximation vector quantization (SA-W-VQ) is proposed. In this method, each vector is coded by a series of vectors of decreasing magnitudes until a certain distortion level is reached. The successive approximation using vectors is analyzed, and conditions for convergence are derived. It is shown that lattice codebooks are an efficient tool for meeting these conditions without the need for very large codebooks. Regular lattices offer the extra advantage of fast encoding algorithms. In SA-W-VQ, distortion equalization of the wavelet coefficients can be achieved together with high compression ratio and precise bit-rate control. The performance of SA-W-VQ for still image coding is compared against some of the most successful image coding systems reported in the literature. The comparison shows that SA-W-VQ performs remarkably well at several bit rates and in various test images." @default.
- W2109887606 created "2016-06-24" @default.
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- W2109887606 date "1996-02-01" @default.
- W2109887606 modified "2023-09-23" @default.
- W2109887606 title "A successive approximation vector quantizer for wavelet transform image coding" @default.
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- W2109887606 doi "https://doi.org/10.1109/83.480765" @default.
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