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    VQLBG

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    pidmap2

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    Attribution Non-Commercial (BY-NC)
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    VQLBG

    Uploaded by

    pidmap2
    102 views1 page

    Original Title

    vqlbg

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    Copyright:

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    102 views1 page

    VQLBG

    Uploaded by

    pidmap2

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 1

    Y:\Matlab Mini-proj\Ref\sample project\vqlbg.

    Monday, July 11, 2011 10:32 AM

    function r = vqlbg(d,k) % VQLBG Vector quantization using the Linde-Buzo-Gray algorithme % % Inputs: d contains training data vectors (one per column) % k is number of centroids required % % Output: r contains the result VQ codebook (k columns, one for each centroids) % % %%%%%%%%%%%%%%%%%% e = .01; r = mean(d, 2); dpr = 10000; for i = 1:log2(k) r = [r*(1+e), r*(1-e)]; while (1 == 1) z = disteu(d, r); [m,ind] = min(z, [], 2); t = 0; for j = 1:2^i r(:, j) = mean(d(:, find(ind == j)), 2); x = disteu(d(:, find(ind == j)), r(:, j)); for q = 1:length(x) t = t + x(q); end end if (((dpr - t)/t) < e) break; else dpr = t; end end end

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