Selecting views of chessboard in camera calibration

Question

I am using 20 views of chessboard to calibrate camera and rectify images.I have tried changing images , and every time different rectified images were obtained(by changing views). I have been trying for many days but the images obtained are tilted and disparity map consists of a lot error pixels. How to fix it?

I am using python-opencv.

Answer 1

Have you verified that the calibration you obtain is correct? See the advice at the bottom of this other answer for tips on how to do it.