Calibration and Error Compensation of Computer Digital Image System for High-Accuracy 3D Computer Vision
用于高精度三维计算机视觉的图象系统标定和误差补偿

Based on analysis for computer digital imaging processing, a technique described, for calibrating the digital imaging system and reducing the error created by the difference between the system model and true system. In our calibration all kind of factors involved in the processing are considered, including intrinsic factors and extrinsic factors, known factors and unknown factors. In the calibration list there are the linear geometric project parameters and nonlinear distortion parameters of the optical imaging processing, the parameters of the optics-electric transfer processing, the parameters of the image signal D/A and A/D transfer, etc. An effective method of error compensation for 3D data accompanied by calibration processing is also proposed in this paper. The error compensation model and its parameters are created in the calibration processing and applied in the 3D computer vision processing. Both above techniques have been used in 3D computer vision system and achieved high accuracy of 3D data.