opencv - how can i get the camera projection matrix out of calibrateCamera() return values -


i trying 3x4 camera matrix triangulation process calibratecamera() returns 3x3 , 4x1 matrices.

how can 3x4 out of matrices?

thanks in advance!!

calibratecamera() returns you
3x3 matrix cameramatrix,
4x1 matrix distcoeffs, , rvecs , tvecs vectors of 3x1 rotation(r) , 3x1 transformation(t) matrices.

what want projectionmatrix, multiply [cameramatrix] [r|t]. 3d 2d projection

therefore, returs 3x4 projectionmatrix.
can read opencv documentation more info.


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