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How can we plot the correlation

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reta jon
reta jon 2021년 9월 14일
댓글: Bjorn Gustavsson 2021년 9월 15일
How can we plot the correlation between pixels in two images, the first clear and the other containing noise, or correlation between the samples in two sound signals?
Is there a tool in Matlab or a function that achieves this purpose?

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Bjorn Gustavsson
Bjorn Gustavsson 2021년 9월 14일
It seems that you ask for the corrcoef. If you look at the correlation between 2 signals you will simly get a 2-by-2 matrix which seems to be a bit small to plot as an image, but you can do something like this (for your 2 images case);
corrI1I2 = corrcoef([I1(:),I2(:)]);
imagesc(corrI1I2)
Or possibly:
plotmatrix([I1(:),I2(:)])
HTH
  댓글 수: 4
Bjorn Gustavsson
Bjorn Gustavsson 2021년 9월 15일
My pleasure.

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