Signal Processing Cross Correlation
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Greetings, I am new to signal processing. Would like a help to understand these codes I came across in file exchange. These codes were said to estimate spot spacing through image mean intensity projection.
yProfile = mean(a); ac = xcov(yProfile); %cross correlation p1 = diff(ac([1 1:end])); p2 = diff(ac([1:end end]));
I have read doc and help xcov but without sample/demo/tutorial I couldn't understand. Pls could someone explain it in simpler form and perhaps some exercise? And also what does [1 1:end] and [1: end end] means?
Thanks in advance guys :)
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Greg Heath
el 12 de Jul. de 2012
xcov is cross covariance, not cross correlation
xcorr is cross correlation
Check a statistics manual, text or wikipedia for the differences between
1. covariance and correlation
2. cross-covariance and cross-correlation
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