Opencv C - Cartesian to Polar image transformation

Question

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

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

Can someone help me? :)

That function isn't what you need see the documentation: docs.opencv.org/modules/core/doc/… cartToPolar(InputArray x, InputArray y, OutputArray magnitude, OutputArray angle, bool angleInDegrees) It transforms the coordinates form cartesian to polar or spherical in 3D. — Michele mpp Marostica
– Michele mpp Marostica, Commented Oct 3, 2013 at 21:04

antoine · Accepted Answer · 2018-08-01 16:25:47Z

4

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.

answered Aug 1, 2018 at 16:25

antoine

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