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�������պ����ѧѧ�� 2009, Vol. 35 Issue (10) :1210-1213    DOI:
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������Ϣ�Ƽ���ѧ �����Ϣ��ͨ�Ź���ѧԺ, ���� 100192
Camera calibration with parallel lines
Ma Changzheng, Dong Mingli, Zhu Lianqing, Lü Naiguang*
School of Optoelectronic Information and Telecommunication Engineering, Beijing Information Science and Technology University, Beijing 100192, China

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Abstract�� To solve precision problem of the camera lens distortion in vision measurement, a new method for nonlinear distortion correction and camera calibration was presented. Considering the fact that a camera followed the perspective camera model if and only if the projection of every 3D line in space onto the camera plane was a line, the coefficients of radial distortion were calculated with the radial anamorphic model and linear characteristic. The distances from the points with tangential distortion and the ideal points to the principal point were equivalent, and the coefficients of tangential distortion were obtained with the ideal points gotten by imitating the straight line. The distortion coefficients were used to correct the distortion points, and the parameters of the camera were estimated. The experimental results show that the accurate and reliable calibration parameters were obtained.
Keywords�� vision measurement   distortion coefficient   camera calibration     
Received 2008-10-07;

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About author: ����(1982 -),��,���ո�����,˶ʿ��, mcz8315@yahoo.cn.
����, ������, ף����, ���˹�.����ƽ��ֱ�ߵ�������궨����[J]  �������պ����ѧѧ��, 2009,V35(10): 1210-1213
Ma Changzheng, Dong Mingli, Zhu Lianqing, L�� Naiguang.Camera calibration with parallel lines[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(10): 1210-1213
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