Does absolute intensity in an image matter when computing the normalized cross correlation with NORMXCORR2?

I have two different images of the same object which differ in overall intensity. I would like to know if this will affect the normalized cross correlation computation with NORMXCORR2.

Answer 1

[Walter Roberson]

Although I cannot answer your question, I found a Technical Solution that relates to some subtle uses of normxcorr2 that might possibly turn out to be of influence when you are coding.