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�������պ����ѧѧ�� 2009, Vol. 35 Issue (3) :347-350    DOI:
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1. �ɶ���ѧ ��ҵ����ѧԺ, �ɶ� 610106;
2. �������պ����ѧ ������ѧ���繤��ѧԺ, ���� 100191
On-spot camera calibration method based on flexible planar target
Yu Minglang1, Wei Zhenzhong2, Sun Junhu2*
1. School of Industrial Manufacturing, Chengdu University, Chengdu 610106, China;
2. School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� A flexible planar target method was proposed to perform on-spot camera calibration. In this method, only several characteristic points with known 3D coordinates are needed to be preset on the planar target, and among these preset characteristic points, the ones which are collinear could determine a straight line, so a number of straight lines can be determined. Furthermore, under the perspective projecting transformation, striaight line and the intersection point of two straight lines are invariables. So, based on the above mentioned properties, a great amount of points which differ from the preset characteristic points on the planar target can be obtained for on-spot camera calibration. Detailed error analysis of the obtained calibration points was conducted based on error propagation law. A real flexible planar target, which is of the size of 100��mm×100��mm and the accuracy of 0.01��mm, was made to perform the experiments of on-spot camera calibration, and the calibration accuracy is 0.032��mm.
Keywords�� camera calibration   planar target   flexible   uncertainty     
Received 2008-03-24;


About author: ������(1966-),Ů,�Ĵ��ɶ���,��ʦ,yminglang2008@163.com.
������, κ����, �����.��������ƽ��б��������ֳ��궨����[J]  �������պ����ѧѧ��, 2009,V35(3): 347-350
Yu Minglang, Wei Zhenzhong, Sun Junhu.On-spot camera calibration method based on flexible planar target[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(3): 347-350
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