Rev | Line | |
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[37] | 1 | % mycorr2 modified version of the 2D correlation |
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| 2 | % for the use with im2col and col2im |
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| 3 | % see GETPOINT |
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| 4 | % |
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| 5 | % |
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| 6 | % $Id: mycorr2.m,v 2.0 2003/06/19 12:07:11 svoboda Exp $ |
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| 7 | |
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| 8 | % Note: It written in order to gain speed. The clarity of the code suffers accordingly |
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| 9 | |
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| 10 | function R = mycorr2(X,G,Gn,Gn2) |
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| 11 | |
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| 12 | % Gn = G-mean(G); |
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| 13 | % Gn2 = sqrt(sum(Gn.^2)); |
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| 14 | |
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| 15 | mX = repmat(mean(X),size(X,1),1); |
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| 16 | mXn = X - mX; |
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| 17 | smX = sum(mXn.^2); |
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| 18 | |
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| 19 | numerator = (mXn'*Gn)'; |
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| 20 | denominator = smX*Gn2; |
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| 21 | |
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| 22 | R = numerator./denominator; |
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| 23 | |
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| 24 | return |
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