| 交通事故现场相机标定技术研究 |
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| 引用本文： | 郭丽丽,刘培玉,李兆翠. 交通事故现场相机标定技术研究[J]. 计算机工程与应用, 2008, 44(20): 229-231. DOI: 10.3778/j.issn.1002-8331.2008.20.069 |
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| 作者姓名： | 郭丽丽 刘培玉 李兆翠 |
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| 作者单位： | 山东师范大学,信息科学与工程学院,济南,250014 |
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| 摘 要： | 在分析了交通事故现场处理特点的基础上,提出了基于棋盘格模板的照相机标定方法,即从不同角度拍摄多幅含有棋盘格模板的现场图像,在Tsai两步法的基础上先对相机进行线性标定,然后基于极大似然估计进行非线性优化,最后进行图像校正,获得照相机模型参数。实验结果表明该方法标定精度高,抗噪性能稳定,标定物简单,更加灵活易用。
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| 关 键 词： | 交通事故现场摄影测量 棋盘格 角点提取 相机标定 |
| 收稿时间： | 2007-10-10 |
| 修稿时间： | 2008-1-4 |
Research on calibration technique of cameras of traffic accident scene |
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| GUO Li-li,UU Pei-yu,LI Zhao-cui. Research on calibration technique of cameras of traffic accident scene[J]. Computer Engineering and Applications, 2008, 44(20): 229-231. DOI: 10.3778/j.issn.1002-8331.2008.20.069 |
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| Authors: | GUO Li-li UU Pei-yu LI Zhao-cui |
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| Affiliation: | School of Information Science and Engineering，Shandong Normal University，Ji’nan 250014，China |
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| Abstract: | Based on analysis of the properties of traffic accident scene,a new method of camera calibration using X-corners patterns is proposed.After several photos are obtained from different views,on the basis of the Tsai,camera is calibrated according to linear model,then its nonlinear parameters are modified based on the maximum likelihood criterion,at last the image is emendated according to new parameters.The final parameters of the model are achieved,and the experiment results demonstrate the proposed method is not only simple and accurate,but also flexible. |
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| Keywords: | traffic accident scene photogrammetry X-corners corner detecting camera calibration |
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