Trying to calibrate a gopro to remove fisheye effect with OpenCV.

The documentation of the script I'm using says "Lastly the program will calculate the total reprojection error. The closer this value is to zero the better. I usually like values under 0.1. Play around with the calibration, see what works and what improves it."

I spent all the afternoon recording video, extracting images and using the script. The lower error I got was 0.6, and the supposed undistorted image was actually more distorted than the original one.

So frustrated 😤