A simple camera calibration method based on sub-pixel corner extraction of the chessboard image

摘要：

In view of the limitations revealed in detecting some special types of corners such as chessboard corners (orthogonal X-corners), the authors of this paper improve the SUSAN operator by adding two ring-shaped masks within the SUSAN circular mask. The improved SUSAN operator also includes sub-pixel positioning of the corners by using the center of the gravity about brightness. Moreover, according to the imaging characteristics of optical lens about distortion distribution, we propose a simple camera calibration method in which the intrinsic and extrinsic parameters of the camera and the distortion coefficients are calibrated separately, that is, the camera intrinsic and extrinsic parameters are linearly calibrated firstly using calibrating points near the center of the image, and then the distortion coefficients are calculated using calibrating points in the whole field of view. The experimental results show that the proposed algorithm obtains good results both in calibrating precision and speed.

关键词： chessboard sub-pixel corner extraction camera calibration

作者: Yang Xingfang Huang Yumei Gao Feng

作者单位: School of Mechmcal Instrument Engineering Xian University of Technology, XAUT Xian,China College o School of Mechmcal Instrument Engineering Xian University of Technology, XAUT Xian,China School of Mechmcal Instrument Engineering Xian University of Technology,XAUT Xian, China

会议类型: 国际会议

会议名称: 2010 IEEE International Conference on Intelligent Computing and Intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

会议地点: 厦门

会议语种:英文

页码: 688-692

在线出版日期: 2010-10-29（万方平台首次上网日期，不代表论文的发表时间）