camera calibration

Camera resectioning (often called camera calibration) is used in Computer Vision and especially in Augmented reality.In Computer Vision, camera resectioning consists in estimating the camera projection matrix from corresponding 3D world and image entities. See Hartley & Zisserman Chapter 7. The camera projection matrix are also known as the intrinsic and extrinsic parameters of the camera, and are often represented by the combination of three transforms; a matrix of camera intrinsic parameters, a 3x3 rotation matrix, and a translation vector. The camera projection matrix is used to refer points in a camera's image space, into 3D world space.
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The determination of the calibrated focal length, the location of the principal point with respect to the fiducial marks and the lens distortion effective in the focal plane of the camera referred to the particular calibrated focal length. 1/3/73

Détermination de la distance focale. Détermination de la position du point principal par rapport aux repères. Détermination de la distorsion de l'objectif dans le plan focal de l'appareil, pour la distance focale étalonnée au préalable. 1/3/73