Wide angle lenses calibration with Opencv

Question

I\'m using a wide-angle lens (178º Diagonal FOV ) and I\'m trying to calibrate it properly using Opencv Calibration module. All the detection and calibration process are working

Answer 1

Are you making sure to use the CV_CALIB_RATIONAL_MODEL flag? That will tell OpenCV to use a model that supports wider angle lenses.

Here are my suggestions for a 150 deg lens. You might also consider trying April Cal which I have had decent luck with.