Methods of accuracy improvement based on binocular calibration system

For the improvement of accuracy of binocular calibration system,several methods and the theory of camera calibration,and the process of binocular calibration system were introduced.By experiment using 2-step binocular calibration method of Zhang Zheng-you,several factors which influence the accuracy of calibration system were summarized and methods were proposed to improve the accuracy.By experiment within minimizing the influence of the factors,the result showed that the re-projection error was less than 0.2 pixel and the methods could satisfy the practicality of binocular calibration system.