Research on measurement and correction of a fish-eye image distortion

Zefeng Wang; Yangjie Lei; Zhi Zhang; Zhaohui Zhang; Hui Zhang; Jijiang Huang; Bo Yi; Jiawen Liao

doi:10.1117/12.2068149

18 September 2014 Research on measurement and correction of a fish-eye image distortion

Zefeng Wang, Yangjie Lei, Zhi Zhang, Zhaohui Zhang, Hui Zhang, Jijiang Huang, Bo Yi, Jiawen Liao

Proceedings Volume 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 928214 (2014) https://doi.org/10.1117/12.2068149
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

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.

Citation Download Citation

Zefeng Wang, Yangjie Lei, Zhi Zhang, Zhaohui Zhang, Hui Zhang, Jijiang Huang, Bo Yi, and Jiawen Liao "Research on measurement and correction of a fish-eye image distortion", Proc. SPIE 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 928214 (18 September 2014); https://doi.org/10.1117/12.2068149

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