| 基于平面4点快速求解相机外方位元素近似值 |
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| 引用本文： | 王保丰,黄桂平,李广云,范生宏,许文学.基于平面4点快速求解相机外方位元素近似值[J].测绘科学技术学报,2007,24(4):306-308. |
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| 作者姓名： | 王保丰 黄桂平 李广云 范生宏 许文学 |
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| 作者单位： | 北京航天指挥控制中心,北京,100094;信息工程大学,测绘学院,河南,郑州,450052;信息工程大学,测绘学院,河南,郑州,450052 |
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| 摘 要： | 提出了一种利用4个共面的控制点对相机外方位元素近似值进行快速求解的方法.利用4个控制点与其像坐标间的几何关系求得其中3个控制点在摄站坐标系下的坐标;再由控制点的已知控制坐标与求得的摄站坐标系下的坐标进一步求得两坐标系的转换参数的初值,并用初值通过解析法对相机外方位元素进行精确求解.最后通过一组实验数据验证了该方法的正确性.
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| 关 键 词： | 控制点 转换参数 外方位元素 相机标定 |
| 文章编号： | 1673-6338（2007）04-0306-03 |
| 收稿时间： | 2007-01-05 |
| 修稿时间： | 2007-04-25 |
Calibrate Rough Elements of Exterior Orientation by Four Control Points in a Plane |
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| WANG Bao-feng,HUANG Gui-ping,LI Guang-yun,FAN Sheng-hong,XU Wen-xue.Calibrate Rough Elements of Exterior Orientation by Four Control Points in a Plane[J].Journal of Zhengzhou Institute of Surveying and Mapping,2007,24(4):306-308. |
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| Authors: | WANG Bao-feng HUANG Gui-ping LI Guang-yun FAN Sheng-hong XU Wen-xue |
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| Institution: | 1. Beijing Aerospace Control Center, Beijing 100094, China; 2. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China |
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| Abstract: | The paper puts forward a kind of method to calibrate rough elements of exterior orientation by four control points in a plane. We calculate the coordinates of three points among four points in camera station coordinate system by four control points and their image coordinate. Then we can calculate the rough transfer parameters between the camera station coordinate system and the control coordinate system by the coordinates of three points in two coordinate systems. We calculate the accurate transfer parameters by the above rough transfer parameters. We make a experiment to testify the veracity of the method in the paper. |
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| Keywords: | control points transfer parameter elements of exterior orientation camera calibration |
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