9 Jun
2009
9 Jun
'09
9:56 a.m.
You can find the offset with subpixel accuracy (useful when you have antialiased or interpolated images) by using Phase correlation. http://en.wikipedia.org/wiki/Phase_correlation You have to apply 3 FFTs, which makes it rather computationally expensive, but the method is very stable to noise. Greetings, Falco