How does undistortion works ?

asked 2016-11-28 06:38:29 -0500

Nbb gravatar image

I am reading the book Learning OpenCV by Reilly and I can't seem to figure out how the distortion coefficients are computed.

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1) How are the coefficients computed ? Is it through least squares fit ? Like how the homography matrix can be computed ?

1) How are the points even established ? If we use a chessboard we would only be able to obtain xd and yd i.e. the distorted points ? How do we get xp and yp ?

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Look in the opencv Doku probably you can find your answer there. Also you can look up "photogrammetry" books to make yourself clear what is mentioned there. The calibration of a camera is one of the important things there.

Vintez gravatar imageVintez ( 2016-11-28 08:10:47 -0500 )edit