Modelling and Removing Radial and Tangential Distortions in Spherical Lenses
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Spherical cameras are variable-resolution imaging systems and promising devices for autonomous navigation purposes, mainly be cause of their wide viewing angle which increases the capabilities of vision-based obstacle avoidance schemes. In addition, spherical lenses resemble the primate eye in their projective models and are biologically relevant. However, the calibration of spherical lenses for Computer Vi sion is a recent research topic and current procedures for pinhole camera calibration are inadequate when applied to spherical lenses. We present a novel method for spherical-lens camera calibration which models the lens radial and tangential distortions and determines the optical center and the angular deviations of the CCD sensor array within a unified numerical procedure. Contrary to other methods, there is no need for special equipment such as low-power laser beams or non-standard nu merical procedures for finding the optical center. Numerical experiments, convergence and robustness analyses are presented.
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- Modelling and Removing Radial and Tangential Distortions in Spherical Lenses
- Book Title
- Multi-Image Analysis
- Book Subtitle
- 10th International Workshop on Theoretical Foundations of Computer Vision Dagstuhl Castle, Germany, March 12–17, 2000 Revised Papers
- pp 1-21
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- Series Title
- Lecture Notes in Computer Science
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- Springer Berlin Heidelberg
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- Springer-Verlag Berlin Heidelberg
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- Editor Affiliations
- 4. Center for image Technology and Robotics (CITR Tamaki)
- 5. 2039 Beckman Institute, University of Illinois
- Author Affiliations
- 6. Department of Computer Science, University of Western Ontario, London, Ontario, Canada
- 7. GRASP Laboratory, University of Pennsylvania, Philadelphia, PA, 19104-6228, USA
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