Camera calibration based on symmetry property of profile of revolution

Shunyi Zheng; Ling Yang; Mingwei Sun

doi:10.1117/12.654937

3 November 2005 Camera calibration based on symmetry property of profile of revolution

Shunyi Zheng, Ling Yang, Mingwei Sun

Proceedings Volume 6043, MIPPR 2005: SAR and Multispectral Image Processing; 60431U (2005) https://doi.org/10.1117/12.654937
Event: MIPPR 2005 SAR and Multispectral Image Processing, 2005, Wuhan, China

Abstract

Camera calibration is the process of determining the intrinsic or internal parameters (i.e. focal length and principal point) of a camera, and is important for both motion estimation and metric reconstruction of 3D models. This paper addresses the problem of calibrating a pinhole camera from images of profile of a revolution. In this paper, the symmetry of images of profiles of revolution has been extensively exploited and a practical and accurate technique of camera calibration from profiles alone has been developed. Compared with traditional techniques for camera calibration which may involve taking images of some precisely machined calibration pattern (such as a calibration grid), or edge detection for determining vanish points which are often far from images center or even don't physically exist, or calculation of fundamental matrix and Kruppa equations which can be numerically unstable, the method presented here used just profiles of revolution, which are commonly found in daily life (e.g. bowls and vases), to make the process easier as a result of the reduced cost and increased accessibility of the calibration objects. This paper firstly analyzed the relationship between the symmetry property of profile of revolution and the intrinsic parameters of a camera, and then showed how to use images of profile of revolution to provide enough information for determining intrinsic parameters. During the process, high-accurate profile extraction algorithm has also been used. Finally, results from real data are presented, demonstrating the efficiency and accuracy of the proposed methods.

Citation Download Citation

Shunyi Zheng, Ling Yang, and Mingwei Sun "Camera calibration based on symmetry property of profile of revolution", Proc. SPIE 6043, MIPPR 2005: SAR and Multispectral Image Processing, 60431U (3 November 2005); https://doi.org/10.1117/12.654937

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KEYWORDS

Cameras

Calibration

CCD cameras

3D modeling

Coded apertures

Computer vision technology

Error analysis

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