How to remove radial distortions from images using OpenCV?

c++ opencv image-processing distortion radial
user1077213 picture user1077213 · Dec 2, 2011 · Viewed 20.3k times · Source

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.

Answer

karlphillip picture karlphillip · Dec 2, 2011

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.

Related questions

Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition

One of the most interesting projects I've worked on in the past couple of years was a project about image processing. The goal was to develop a system to be able to recognize Coca-Cola 'cans' (note that I'm stressing the …

Read More
Convert RGB to Black & White in OpenCV

I would like to know how to convert an RGB image into a black & white (binary) image. After conversion, how can I save the modified image to disk?

Read More
c++ and opencv get and set pixel color to Mat

I'm trying to set a new color value to some pixel into a cv::Mat image my code is below: Mat image = img; for(int y=0;y<img.rows;y++) { for(int x=0;x<img.cols;x++) { Vec3…

Read More