jens
7b34529b24
git-svn-id: http://moon:8086/svn/matlab/trunk@91 801c6759-fa7c-4059-a304-17956f83a07c
21 lines
420 B
Matlab
21 lines
420 B
Matlab
% Removes DC component from image patches
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% Data given as a matrix where each patch is one column vectors
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% That is, the patches are vectorized.
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function [Y,meanX]=removeDC(X, dim);
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% Subtract local mean gray-scale value from each patch in X to give output Y
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if nargin == 1
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dim = 1;
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end
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meanX = mean(X,dim);
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if dim==1
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Y = X-meanX(ones(size(X,1),1),:);
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else
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Y = X-meanX(:,ones(size(X,2),1));
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end
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return;
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