| CCD摄像机图像中心两种标定方法的应用研究 |
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| 引用本文： | 王锋,周仁魁,杨小许,陈敏,邹永星,罗秀娟,曹剑中,周泗忠,聂浩之. CCD摄像机图像中心两种标定方法的应用研究[J]. 光子学报, 2006, 35(2): 294-298 |
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| 作者姓名： | 王锋 周仁魁 杨小许 陈敏 邹永星 罗秀娟 曹剑中 周泗忠 聂浩之 |
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| 作者单位： | 中国科学院研究生院,北京,100039;中国科学院西安光学精密机械研究所,西安,710068;中国科学院西安光学精密机械研究所,西安,710068 |
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| 基金项目： | 中科院知识创新基金资助. |
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| 摘 要： | 应用两种方法对CCD摄像机的图像中心进行标定;其中直接光学方法根据因镜头畸变造成的像素点在像面水平和垂直两个方向上分布的对称性得到图像中心;基于镜头畸变的透视投影方法利用具有精确定位点阵的平面模板及其在不同方位所成图像,标定出摄像机的内外参量,其中包含图像中心.标定过程考虑了两种主要的镜头畸变.针对某型摄像机及镜头,试验得出关于两种方法的适用性和优缺点,并验证了后一种方法的强收敛性.
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| 关 键 词： | 图像中心 摄像机标定 摄像机参量 镜头畸变 |
| 收稿时间： | 2005-04-14 |
Applications of Two Types of Calibration Method to CCD Camera's Image Center Measurement |
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| Wang Feng,Zhou Renkui,Yang Xiaoxu,Chen Min,Zou Yongxing,Luo Xiujuan,Cao Jianzhong,Zhou Sizhong,Nie Haozhi. Applications of Two Types of Calibration Method to CCD Camera's Image Center Measurement[J]. Acta Photonica Sinica, 2006, 35(2): 294-298 |
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| Authors: | Wang Feng Zhou Renkui Yang Xiaoxu Chen Min Zou Yongxing Luo Xiujuan Cao Jianzhong Zhou Sizhong Nie Haozhi |
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| Abstract: | The practical applications of two types of calibration method to CCD camera's image center measurement were researched. With regard to image center,pixels' distribution on image plane is still symmetrical even under the influence of lens distortion. Based on this,in direct optical method,the image center is judged by the symmetry of pixels' position in vertical and horizontal directions on image plane. In lens distortion based perspective projection method,a complete imaging model could be constructed and image center is one of the parameters in the model. Two kinds of main lens distortion are considered in the model. Tests were done and the comparison was made for two methods. The second method's strong convergence property was confirmed. |
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| Keywords: | Image center Camera calibration Camera parameters Lens distortion |
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