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- W2016452521 abstract "Vector quantisation (VQ) codebooks are generated by combining principal component analysis (PCA) algorithms with Linde–Buzo–Gray (LBG) algorithms. All training vectors are grouped according to the projected values of the principal components. The PCA-LBG-based algorithms include (1) PCA-LBG-Median, which selects the median vector of each group, (2) PCA-LBG-Centroid, which adopts the centroid vector of each group, and (3) PCA-LBG-Random, which randomly selects a vector of each group. The LBG algorithm finds a codebook based on the better vectors sent to an initial codebook by the PCA. The PCA performs an orthogonal transformation to convert a set of potentially correlated variables into a set of variables that are not linearly correlated. Because the orthogonal transformation efficiently distinguishes test image vectors, the proposed PCA-LBG-based algorithm is expected to outperform conventional algorithms in designing VQ codebooks. The experimental results confirm that the proposed PCA-LBG-based algorithms indeed obtain better results compared to existing methods reported in the literature." @default.
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- W2016452521 date "2014-05-03" @default.
- W2016452521 modified "2023-09-27" @default.
- W2016452521 title "PCA-LBG-based algorithms for VQ codebook generation" @default.
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- W2016452521 doi "https://doi.org/10.1080/00207217.2014.905994" @default.
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