What is the principal point of undistort images?

asked 2017-10-26 09:48:17 -0600

MMonty1960 gravatar image

I determined both cameraMatrix and distortion coefficients of my camera with the opencv tools. After that I can undistort any grabbed image by means of

C++: void undistort(InputArray src, OutputArray dst, InputArray cameraMatrix, InputArray distCoeffs, InputArray newCameraMatrix=noArray() )

The question is: after the undistortion, does the principal point of the corrected image remain (xp,yp), or it is shifted in the center of the matrix, i.e. (Ncolumn/2,Nrow/2)?

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