I’m currently trying to perform camera calibration on a camera lens with a UV filter on it using the checkerboard method. I’ve had a very tough time making the checkerboard visible with enough contrast for the FindChessboard algorithm to work successfully. I’ve been using a laser printed chessboard that I’ve been hanging outside. With the right camera settings and enough sunlight, I can get the image to appear with enough contrast for the checkboard algorithm to work. See below:
However, the success of this method is inconsistent, and I need it work consistently inside as well as outside.
Does anyone have any ideas for how I could make this work better and more consistently? Should I still be trying to use the chessboard method, but use different materials for the chessboard (if there’s anything that can reflect UV or be picked up easily on a UV filtered lens)? Are there other methods for undistorting a lens that would work better for a UV filtered lens?
Thanks for any direction or help.