Implement Phase Correlation algorithm

Yeah, is my error from a previous example.

Normalization divisor is p=H2(0,0) where H2(u,v)=G(u,v)*conj(H(u,vv)).

h2(x,y)=ifft(H2(u,v))/p.

You must select an adequate word and fractional bits size because h2 values could reach

height*widht*max(g(x,y))*max(h(x,y)).

assuming your images pixels take values ranging from 0 to 1, you must increase integer part of fixed point numbers to log2(height*widht) and consider my previous explanation for division and square root.

I consider you could ommit the square root step, the peak search can be achieved without it.