Improved camera calibration method based on perpendicularity compensation for binocular stereo vision measurement system
Improved camera calibration method based on perpendicularity compensation for binocular stereo vision measurement system
复制标题
双目立体视觉测量系统基于垂直补偿的改进相机标定方法
DOI：
10.1364/oe.23.015205
复制
发表时间：
2015-06-15
期刊：
影响因子：
3.8
通讯作者：
Zhao, Kai
中科院分区：
文献类型：
--
作者：
Jia, Zhenyuan;Yang, Jinghao;Zhao, Kai
双目视觉系统的高精度标定是实现高精度尺寸测量的重要手段。本文提出了一种改进的摄像机标定方法。首先，提出了一种基于主动视觉的垂直度补偿内禀参数精确标定方法。与以往的工作相比，该方法消除了摄像机运动不垂直对标定精度的影响。该方法独立计算主点、尺度因子和畸变因子，从而消除了这些参数的强耦合。其次，提出了一种仅5幅图像的精确全局优化方法。标定实验结果表明，该方法标定精度可达99.91%。(C) 2015美国光学学会。
High-precision calibration of binocular vision systems plays an important role in accurate dimensional measurements. In this paper, an improved camera calibration method is proposed. First, an accurate intrinsic parameters calibration method based on active vision with perpendicularity compensation is developed. Compared to the previous work, this method eliminates the effect of non-perpendicularity of the camera motion on calibration accuracy. The principal point, scale factors, and distortion factors are calculated independently in this method, thereby allowing the strong coupling of these parameters to be eliminated. Second, an accurate global optimization method with only 5 images is presented. The results of calibration experiments show that the accuracy of the calibration method can reach 99.91%. (C) 2015 Optical Society of America.