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IEICE TRANSACTIONS on Information

Fast Codeword Search Algorithm for Image Vector Quantization Based on Ordered Hadamard Transform

Zhe-Ming LU, Dian-Guo XU, Sheng-He SUN

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Summary :

This Letter presents a fast codeword search algorithm based on ordered Hadamard transform. Before encoding, the ordered Hadamard transform is performed offline on all codewords. During the encoding process, the ordered Hadamard transform is first performed on the input vector, and then a new inequality based on characteristic values of transformed vectors is used to reject the unlikely transformed codewords. Experimental results show that the algorithm outperforms many newly presented algorithms in the case of high dimensionality, especially for high-detail images.

Publication
IEICE TRANSACTIONS on Information Vol.E86-D No.7 pp.1318-1320
Publication Date
2003/07/01
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Image Processing, Image Pattern Recognition

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