Correlation function

The function corr2..it is used in MATLAB to compare two images according to the formula as given in MATLAB help. I wanted to know the logic behind the function. I mean, what does correlation exactly mean and what does it do really while comparing two images. Replies are really needed as i have a project to complete.

Answer 1

[the cyclist]

You should be able to type "edit corr2" and look into the exact calculation. Be careful not to make changes and overwrite.