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DSP Code Sharing > Discrete Cosine Tranform Matrix generation
Discrete Cosine Tranform Matrix generation
Language: Scilab
Processor: Not Relevant
Submitted by Senthilkumar R on Feb 6 2011
Licensed under a Creative Commons Attribution 3.0 Unported License
Discrete Cosine Tranform Matrix generation
This function used to generate Discrete Cosine Transform kernel for 2D operations
function[DCT] = dct_mtx(n)
[cc,rr] = meshgrid(0:n-1);
//disp(cc)
//disp(rr)
DCT = sqrt(2 / n) * cos(%pi * (2*cc + 1) .* rr / (2 * n));
DCT(1,:) = DCT(1,:) / sqrt(2);
endfunction
[cc,rr] = meshgrid(0:n-1);
//disp(cc)
//disp(rr)
DCT = sqrt(2 / n) * cos(%pi * (2*cc + 1) .* rr / (2 * n));
DCT(1,:) = DCT(1,:) / sqrt(2);
endfunction
posted by Senthilkumar R Comments
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