| 基于一维标定物的高精度标定 |
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| 引用本文： | 王涛,吕乃光,杨剑.基于一维标定物的高精度标定[J].北京机械工业学院学报,2010,25(1):21-25. |
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| 作者姓名： | 王涛 吕乃光 杨剑 |
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| 作者单位： | 王涛,吕乃光(北京信息科技大学,光电信息与通信工程学院,北京,100192);杨剑(北京邮电大学,电子工程学院,北京,100876) |
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| 基金项目： | 国家自然科学基金项目，人才强教项目，重点实验室开放课题 |
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| 摘 要： | 基于一维标定物相机标定方法的标定精度问题，系统地分析了标定过程中的误差形成因素，提高精度的关键在于对畸变的校正。结合一维标定物的特点，提出用交比不变法对成像畸变进行校正。同时指出了在实际应用中应注意的一些问题，以提高算法的稳定性。实验表明，其标定精度可以达到基于平面标定法的标定精度，从而验证了算法的有效性。
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| 关 键 词： | 标定 一维标定物 高精度 畸变校正 |
The high precision calibration of machine vision based on one-dimensional object |
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| WANG Tao,Lu Nai-guang,YANG Jian.The high precision calibration of machine vision based on one-dimensional object[J].Journal of Beijing Institute of Machinery,2010,25(1):21-25. |
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| Authors: | WANG Tao Lu Nai-guang YANG Jian |
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| Affiliation: | 1. School of Photoelectric Information and Telecommunication, Beijing Information Science and Technology University, Beijing 100192, China;2. Department of Electronic, Beijing University of Posts and Telecommunications, Beijing 100876, China) |
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| Abstract: | Based on the accuracy of camera calibration based on one-dimensional objects, the factors contributing to errors in calibration processing are analyzed systematically. The key of improving the accuracy lies in distortion correction. Combined with the characteristics of one-dimensional objects,the cross-ratio constant method is proposed to correct the image distortion. At the same time, the problems need to be paid attention in practice are pointed out, in order to enhance the algorithm stability. Experiments show that the calibration accuracy based on one-dimensional objects can be achieved at the same level of calibration based on plane, thus verifies the effectiveness of the algorithm. |
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| Keywords: | calibration one-dimensional object high precision distortion correction |
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