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Proceedings Paper

Efficient codebook search algorithm for vector quantization
Author(s): Chih-chiang Lai; Shen-Chuan Tai
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Paper Abstract

In this paper, we present an efficient codebook search algorithm in a VQ-based system. The proposed fast search algorithm utilizes the compactness property of signal energy on transform domain and the geometrical relations among input vector and codevectors to eliminate those codevectors which is impossible to be the closest codeword to input vector. Id does not need to examine each entry in the codebook of a vector quantization encoder and can achieve a full search equivalent performance. In comparison with other existing fast algorithm, the proposed algorithm requires the least number of multiplication and the least total number of distortion measurements.

Paper Details

Date Published: 21 April 1995
PDF: 9 pages
Proc. SPIE 2501, Visual Communications and Image Processing '95, (21 April 1995); doi: 10.1117/12.206662
Show Author Affiliations
Chih-chiang Lai, National Cheng Kung Univ. (Taiwan)
Shen-Chuan Tai, National Cheng Kung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 2501:
Visual Communications and Image Processing '95
Lance T. Wu, Editor(s)

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