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Highlights fromIMAGE COMPRESSIONUSING LBG ALGORITHM

[u, w, nw]=findweight(diff,wi...

[y]=testlvq1(x)

y=lvqdecode(x,v)

main.m

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from IMAGE COMPRESSION USING LBG ALGORITHM

by AARATHY M

Vector Quantization (VQ), a well-known compressiontechnique, which has been widely used ...

main.m

load parameter;

global para

x=imread('rice.tif');

original=x;

% v=rand(256,16);% imwrite(uint8(v),'codebook.bmp');

[v]=trainlvq(x,0);compressed=v;

%imwrite(uint8(vp),'codebook.bmp');

[y]=testlvq1(x);

[psnrvalue]=psnr(original,y,255);

% error=0;% for y=1:240% for x=1:291% MSE=(((Original(x,y))-(DecompressedImage(x,y)))^2);% error=MSE+error;% end% end% MSE=(1/(291*240))*error; % disp('PSNR');% PSNR=20*log10(255/sqrt(MSE));% disp(PSNR);% figure,imshow(original);title('Original Image'); % figure,imshow(compressed);% title('compressed Image');

figure,imshow(uint8(y));title('Decompressed Image');

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