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Proceedings Paper

Research on measurement and correction of a fish-eye image distortion
Author(s): Zefeng Wang; Yangjie Lei; Zhi Zhang; Zhaohui Zhang; Hui Zhang; Jijiang Huang; Bo Yi; Jiawen Liao
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Paper Abstract

Fisheye lenses have the advantages of short focal length and large field of view. However, by using the “non-similar” imaging principle, they artificially introduce a large barrel distortion. In order to improve the quality of the images correction of distortion is required. This article analyzes the polar distortion correction model, raised a simple distortion coefficient calibration method and the use of bilinear interpolation method for gray level interpolation. Compared to other methods, this method is easier to reinforce and achieves high accuracy, and it can be easily implemented in the hardware system. At the end of the paper we introduced a device correction for a fisheye CCD camera. Based on the original data, a distortion correction model is established. In order to minimize the error, the correction was divided into three sections, and the image is well recovered.

Paper Details

Date Published: 18 September 2014
PDF: 5 pages
Proc. SPIE 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 928214 (18 September 2014); doi: 10.1117/12.2068149
Show Author Affiliations
Zefeng Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Yangjie Lei, Xi’an Institute of Optics and Precision Mechanics (China)
Zhi Zhang, Xi’an Institute of Optics and Precision Mechanics (China)
Zhaohui Zhang, Xi’an Institute of Optics and Precision Mechanics (China)
Hui Zhang, Xi’an Institute of Optics and Precision Mechanics (China)
Jijiang Huang, Xi’an Institute of Optics and Precision Mechanics (China)
Bo Yi, Xi’an Institute of Optics and Precision Mechanics (China)
Jiawen Liao, Xi’an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 9282:
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Wei Gao, Editor(s)

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