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Vol. 158, Issue 11, November 2013, pp. 448-455

 

Bullet

 

Analyzing and Improving the Camera Plane Calibration Method
 
1, 2 Chun-Yan WANG, 1 Qing-Chang TAN, 1, 3 Guang WEI, 1 Guan-Nan LI

1 College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China

2 School of Computer Science and Technology, Changchun Normal UniversityŠ Changchun 130032, China

3 China FAW Company Limited R&D Center, Changchun 130011, China

1 Tel.: 0431-86168123
E-mail: wcy5225@126.com

 

Received: 19 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems

 

Abstract: An improved method for camera plane calibration is proposed by analyzing and testing the two-step calibration method based on plane. In the improved method, central area of images is used firstly to solve initial values of the camera intrinsic parameters, improving precision of the initial values. Then, to facilitate dimension measurement using machine vision, the lens distortion model is modified and the projection direction is changed. Experiment results show that the improved calibration method could increase camera calibration precision, and easy to operate. It can be used in the machine vision research and the industry 3D measurement.

 

Keywords: Camera calibration, Distortion model, Intrinsic parameters initial value, Residual error, Corner point field.

 

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