Calibration method for misaligned catadioptric camera based on planar conic

Qidan Zhu; Congying Xu; Chengtao Cai

doi:10.1117/12.2013433

13 March 2013 Calibration method for misaligned catadioptric camera based on planar conic

Qidan Zhu, Congying Xu, Chengtao Cai

Proceedings Volume 8783, Fifth International Conference on Machine Vision (ICMV 2012): Computer Vision, Image Analysis and Processing; 87830H (2013) https://doi.org/10.1117/12.2013433
Event: Fifth International Conference on Machine Vision (ICMV 12), 2012, Wuhan, China

Abstract

Based on conventional camera calibration methods, a flexible approach for misaligned catadioptric camera from planar conic was presented. The catadioptric camera composed of a perspective camera and a hyperboloid mirror. The projection model of misaligned catadioptric camera was built and the projection functions were derived. Having known camera parameters, this method only requires the camera to observe a model plane which contains three concentric conics on the back of the revolution mirror. Then the mirror posture and attitude relative to the camera can be calculated linearly. The center of the concentric conics is on the mirror axis. This technique is easy to use and all computations are matrix operations in the linear algebra. The closed-form solution can be obtained without nonlinear optimization. Experiments are conducted on real images to evaluate the correctness and the feasibility of this method.

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Qidan Zhu, Congying Xu, and Chengtao Cai "Calibration method for misaligned catadioptric camera based on planar conic", Proc. SPIE 8783, Fifth International Conference on Machine Vision (ICMV 2012): Computer Vision, Image Analysis and Processing, 87830H (13 March 2013); https://doi.org/10.1117/12.2013433

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KEYWORDS

Cameras

Mirrors

Calibration

Combined lens-mirror systems

Imaging systems

Distortion

Panoramic photography

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