用于交会测量的摄像机标定系统设计

介绍了一种简易的摄像机立体标定系统的设计方案,主要应用于多CCD交会测量技术中,可以完成单个摄像机的标定、多个摄像机之间的立体标定和标定精度评估等功能.建立了包含透镜径向畸变和切向畸变的摄像机成像模型,采用两步法求解摄像机参数,最后通过交会测量得到的多个棋盘格的边长与实际边长的误差量来衡量摄像机标定的精度.该系统不要求使用者具有专业的3D几何知识,速度快,成本低,而且可以达到很高的精度.

Design of a Camera Calibration System Applied in Intersection Measurement

A design scheme of an easy and reliable stereo camera calibration system applied in multiple CCD intersection measurement system is presented.The system can do calibration for both a single camera and several cameras;it can also evaluate the accuracy of the calibration results.A camera model containing the radial lens distortion and tangential lens distortion is created,and then the camera parameters by the two-steps method are solved.At last,the calibration accuracy through a method based on the length of the checkers is assessed.Experiment proves that the calibration system has a high speed and high accuracy,and it does not require the user to have professional knowledge of 3D geometry.