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Entropy-Constrained Sample-Adaptive Product Quantizer Design for the High Bit-Rate Quantization  

Kim, Dong-Sik (Department of Electronics Engineering, Hankuk University of Foreign Studies)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.49, no.1, 2012 , pp. 11-18 More about this Journal
Abstract
In this paper, an entropy constrained vector quantizer for high bit-rates is proposed. The sample-adaptive product quantizer (SAPQ), which is based on the product codebooks, is employed, and a design algorithm for the entropy constrained sample adaptive product quantizer (ECSAPQ) is proposed. The performance of the proposed ECSAPQ is better than the case of the entropy constrained vector quantizer by 0.5dB. It is also shown that the ECSAPQ distortion curve, which is based on the scalar quantizer, is lower than the high-rate theoretical curve of the entropy constrained scalar quantizer, where the theoretical curve have 1.53dB difference from Shannon's lower bound.
Keywords
ECVQ; SAPQ; ECSAPQ;
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Times Cited By KSCI : 1  (Citation Analysis)
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