It is possible to get the camera and lens parameters for rectification empirically using a chessboard but: It is possible get the rectification parameters from factory lens parameter? If so, what is the relationship between rectification parameters and typical optical parameters provided?
For example from FLIR TAU 2 19mm factory parameters I know a lot of its optics.
19 mm
f/1.25
Tau 640
(17μ 640×512)
FoV iFoV 32° x 26°
0.895 mr
Min Focus Distance 15.3cm
Hyperfocal Distance 9.5m
Hyperfocal Depth of Field 4.8m
Lens Mount
Length 19mm
Diameter 29mm
How to use here the opencv method "fisheye-undistortpoints" ?
//! undistorts 2D points using fisheye model void undistortPoints(InputArray distorted, OutputArray undistorted, InputArray K, InputArray D, InputArray R = noArray(), InputArray P = noArray());