Research on Camera Calibration of the Binocular Vision Light Pen Measurement System

To binocular vision light pen measuring system, calibrating the camera fast and accurate, can improve the practicality of the system application. In the establishment of ideal camera imaging model, considering the lens radial distortion and tangential distortion factors, studies the practical imaging model parameters. Plane template calibration algorithm is improved. Using points which are near calibration template center and distortion smaller solve the initial model parameters. Application internal mapping Newton's method of subspace confidence domain method solves global optimization model parameters. Designing plane calibration template and using coded identification method, identify the signs point in the calibration template. The calibration efficiency is improved. The experiments show that the calibration method can be achieved binocular stereo vision camera calibration.