|本期目录/Table of Contents|

[1]刘军,李娜*,刘鹏.双目视觉立体标定方法的改进[J].武汉工程大学学报,2013,(10):68-73.[doi:103969/jissn16742869201310014]
　LIU Jun,LI Na,LIU Peng.Improvement of stereo calibration of binocular vision method[J].Journal of Wuhan Institute of Technology,2013,(10):68-73.[doi:103969/jissn16742869201310014]
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双目视觉立体标定方法的改进(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2013年10期
页码:
68-73
栏目:
机电与信息工程
出版日期:
2013-11-10

文章信息/Info

Title:
Improvement of stereo calibration of binocular vision method
文章编号:
16742869(2013)10006806
作者:
刘军1; 2; 李娜1*; 刘鹏1
1.武汉工程大学计算机科学与工程学院，湖北 武汉 430205;2.武汉工程大学智能机器人湖北省重点实验室，湖北 武汉 430205
Author(s):
LIU Jun1; 2;  LI Na1;  LIU Peng1
1School of Computer Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China;2.Hubei Provincial key Leboratory of Intelligent Robot,Wuhan Institute of Technology,Wuhan 430205,China
关键词:
双目视觉; 立体标定; 消失点; 内外参数
Keywords:
binocular vision;  stereo calibration;  vanishing point;  intrinsic and external parameters
分类号:
TP391.41
DOI:
103969/jissn16742869201310014
文献标志码:
A
摘要:
为了提高双目立体视觉系统中立体标定的精度，提出了一种利用正方形标定域中相互正交方向的消失点进行立体标定的新方法.首先摄像机从不同的方向拍摄平面标定板,在图像平面上确定一个正方形投影区域，再根据射影几何模型中的交比性质,计算出正方形中相互正交方向上的两对消失点；然后利用消失点与光心连线的射影几何性质,线性求解摄像机的全部内外参数；最后利用全局优化方法进行参数的优化.这一方法继承了张正友标定方法畸变模型的使用，实验利用MATLAB通过左右摄像机拍摄的两组图像对方法进行验证，实验结果表明,该方法的立体标定精度较高，且旋转矩阵R和平移向量T均符合实际要求；由于实验中正方形投影区域的大小及具体的位置关系是随机的，使其具有较好的实用性.
Abstract:
To enhance the precision of stereo calibration, a new method for camera calibration using two pairs of vanishing points of orthogonal directions on testing square was proposed. First, a camera captured the template of the square from different directions; two vanishing points on parallel and diagonal directions on testing square were then determined by using the concept of cross ratio and harmonic conjugate in projective geometry. Second, all the intrinsic and external parameters were calculated linearly based on parallel property of a line of vanishing point connecting optical center. Finally, all the parameters were optimized by using global optimization method. The proposed method inherits the distortion model of Zhang Zhengyou calibration method, and is verified using two groups of images from left and right camera in MATLAB. Experiment results show that the method has high precision, and the rotation matrix R and the translation vector T conform to the actual requirements. Because the size of square projection area and the specific location are random, the method has good practicality.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：20130829基金项目：湖北省教育厅青年人才项目(Q20111504)；武汉工程大学科学研究基金项目（12116021）；武汉工程大学研究生教育创新基金项目（CX201274）作者简介：刘军（1975\|），男，湖北武汉人，副教授，博士.研究方向：图像处理、嵌入式系统、信息存储和多媒体加密.*通信联系人
更新日期/Last Update: 2013-11-11