Simulation of DCT, Walsh, Hadamard, Haar and Slant transform using variable block sizes

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Performs non sinusoidal image transforms on gray-scale images and DCT using the dct matrix.

t=getInvSlantTransform(im,N)
function t=getInvSlantTransform(im,N)
s=sltmtx(log2(N));
t=s'*im*s;

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