Opencv C - Cartesian to Polar image transformation

Question

Hi i want to transform a image like this (right to left image ):

I have searching about functions like cvCartToPolar but i dont know how to use it..

Can someone help me? :)

Answer 1

nowadays, there is cv::warpPolar and if you can't achieve what you want (because for example your input image is only part of a disk, you might be interessed in cv::remap (the former uses the later internally). In the later case, you have to build the mapping table yourself with some math.