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I collected several images and then i applied this xcorr2(a,b) function. Now i got a value like 3.0281, after one minute I applied same function and got a result of 3.0282 like this. What is this value represents and why it is changing?

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GUDIVADA ROKESH KUMAR
关闭： MATLAB Answer Bot 2021-8-20
normxcorr2(a,b)
corr2(a,b)
autocorr(a)
autocorr(a,lags)
What is the output represented by above mentioned functions: I knew somewhat, what this functins are doing but bit confused while coming to output of these functions is that are pixel intensities or image densities etc, don't know..!!
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