First of all, here is link to part 1 and here is link to the video of my talk about applications of correlation.

This part is mostly technical, about correlation calculation approaches. In the end of the last post a “cross-correlation measure” was defined (not *real* cross-correlation) as the summary of Euclidean distances between two functions in 1D. For 2D (images) there are 2 independent space coordinates, so “cross-correlation distance” is also 2D function. (continue reading…)