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Optical Engineering

Calibration of central omnidirectional cameras via the viewing sphere
Author(s): Ying Lin; Xiaojin Gong; Jilin Liu
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Paper Abstract

We propose a robust calibration method for central omnidirectional cameras. It makes use of two mutually orthogonal sets of parallel lines. Based on the unified sphere model, the intrinsic parameters are initialized by two pairs of vanishing points in the image plane. Furthermore, the extrinsic parameters are estimated based on two geometric preservations of the two line sets on the viewing sphere. We test the method on both simulated and real data. The simulated experiments show the effectiveness of the proposed method. Experiments with respect to calibration results and validation of extrinsic parameters for real images prove that the proposed method has higher accuracy compared with Mei's toolbox.

Paper Details

Date Published: 18 July 2012
PDF: 10 pages
Opt. Eng. 51(7) 077207 doi: 10.1117/1.OE.51.7.077207
Published in: Optical Engineering Volume 51, Issue 7
Show Author Affiliations
Ying Lin, Zhejiang Univ. (China)
Xiaojin Gong, Zhejiang Univ. (China)
Jilin Liu, Zhejiang Univ. (China)

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