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

I don't have any experiences with fish-eye lenses, but if you are planing to map the image to a perspective projection, you will run into trouble. The large viewing angle parts of the image will map to very far distances on the image plane. This might acctually result in an image like the one you provided. There are definitely some errors, but it seems that most of the straight "world lines" map to straight "image lines".

What exactly did you expect as the result and what are you planing to use this calibration for?