How to remove radial distortions from images using OpenCV?

Question

I think I should be using cv::remap to remove the distortion but can't figure out what the the maps const Mat& map1, const Mat& map2 to should be to achieve this.

Should I be using the cv::initUndistortRectifyMap to find out the values? If so, I'd really appreciate an example. I do not have the intrinsic camera parameters or don't know how to calculate them. Thanks.

Scrod

Answer 1

If you are looking to remove the distortion caused by the camera lens you should take a look at this answer I wrote some time ago, which has intructions and references on how to do proper camera calibration.

I also suggest this post, which has good info on the procedure as well and uses the C++ interface of OpenCV.

Warrantee

Yes I'm trying to remove distortion from the lens. Going over the links now :) – Scrod

The second link is dead, unfortunetly. Could you provide a new one? – America

Wayback Machine. – Warrantee

@Warrantee magnificent – America

Turns out that the page is not gone, just moved. New location but unfortunately still have to use wayback machine to download the full-size checkerboard. – Whitewing

Hi, I post my question here as a comment because I think it might not get a lot of attention. Camera calibration is something very specific. I read the answers you provided but unfortunately was unable to use this info in my situation. Would it be possible for you to share your insights? #46226443 – Liquesce

@Liquesce It's been 6 years since I last played with this. Sorry, my memory is quite terrible. Good luck! – Warrantee