Calibration of an optical stereo-tracker with a videometric system using the pair-point method for IGS

In various applications of computer vision, there is the need to calibrate the coordinate systems of different elements respect to one another in order to have a proper perspective of the objects in the scene. In the field of computer assisted surgery (CAS) we encounter this problem in many applications, like navigation of surgical tools, surgical robotics, etc. This paper proposes an estimate calibration by means of the extraction of points of a grid plane pattern and the pair point method getting a proper calibration of an optical stereo-tracker with a videometric system. As a result, we obtained a calibration that allows to track the pose of a webcam within the working space of a stereo-tracker. This procedure will allow us to use this method to calibrate different navigated tools that have a videometric system attached.