A novel approach for vector quantization using a neural network, mean shift, and principal component analysis-based seed re-initialization

Chin Chuan Han, Ying Nong Chen, Chih Chung Lo, Cheng Tzu Wang

研究成果: 雜誌貢獻期刊論文同行評審

11 引文 斯高帕斯(Scopus)

摘要

In this paper, a hybrid approach for vector quantization (VQ) is proposed for obtaining the better codebook. It is modified and improved based on the centroid neural network adaptive resonance theory (CNN-ART) and the enhanced Linde-Buzo-Gray (LBG) approaches to obtain the optimal solution. Three modules, a neural net (NN)-based clustering, a mean shift (MS)-based refinement, and a principal component analysis (PCA)-based seed re-initialization, are repeatedly utilized in this study. Basically, the seed re-initialization module generates a new initial codebook to replace the low-utilized codewords during the iteration. The NN-based clustering module clusters the training vectors using a competitive learning approach. The clustered results are refined using the mean shift operation. Some experiments in image compression applications were conducted to show the effectiveness of the proposed approach.

原文???core.languages.en_GB???
頁(從 - 到)799-810
頁數12
期刊Signal Processing
87
發行號5
DOIs
出版狀態已出版 - 5月 2007

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