Normalized Correlation

Question

0 个投票

I have a vector A 1x512 and a matrix M 512 x 512. I need to value the normalized correlation between A and the ith row of the matrix M.

I think:

corr_rows = zeros(1,512);
for i=1:512
    Row = A(i,:);
    corr_rows(i) = corr2(A,Row);
end

Is It correct? And the normalization?

Thanks!!!

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Answer 1

Sean de Wolski 2011-10-25

0 个投票

Looks almost right to me, does it look right to you?

Hint: you need to change A to M in the assignment to row. Okay, that was a really nice hint.

Bruno Bertini 2011-10-25

Row = M(i,:);

Just a write error, sorry. :-)

Answer 2

Image Analyst 2011-10-25

0 个投票

If you want normalized, then you'll have to use normxcorr2() instead of xcorr2.

Bruno Bertini 2011-10-26

But normxcorr2 creates a vector, corr2 a number. And corr_rows must be a vector, not a matrix.