ICIRA '08 Proceedings of the First International Conference on Intelligent Robotics and Applications: Part II
An automatic camera calibration method using GPS-enabled mobile device
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
Simple camera calibration from a single image using five points on two orthogonal 1-D objects
IEEE Transactions on Image Processing
Camera calibration and geo-location estimation from two shadow trajectories
Computer Vision and Image Understanding
Improving three-dimensional point reconstruction from image correspondences using surface curvatures
Machine Vision and Applications
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This paper proposes a novel method for camera calibration using images of a mirror symmetric object. Assuming unit aspect ratio and zero skew, we show that interimage homographies can be expressed as a function of only the principal point. By minimizing symmetric transfer errors, we thus obtain an accurate solution for the camera parameters. We also extend our approach to a calibration technique using images of a 1-D object with a fixed pivoting point. Unlike existing methods that rely on orthogonality or pole-polar relationship, our approach utilizes new interimage constraints and does not require knowledge of the 3-D coordinates of feature points. To demonstrate the effectiveness of the approach, we present results for both synthetic and real images