Efficient Generic Calibration Method for General Cameras with Single Centre of Projection

Generic camera calibration is a non-parametric calibration technique that is applicable to any type of vision sensor. However, the standard generic calibration method was developed with the goal of generality, and it is therefore suboptimal for the common case of cameras with a single centre of projection (e.g. pinhole, fisheye, hyperboloidal catadioptric). This paper proposes novel improvements to the standard generic calibration method for central cameras that reduce its complexity, and improve its accuracy and robustness. Improvements are achieved by taking advantage of the geometric constraints resulting from a single centre of projection. Input data for the algorithm is acquired using active grids, the performance of which is characterised. A new linear estimation stage to the generic algorithm is proposed incorporating classical pinhole calibration techniques, and it is shown to be significantly more accurate than the linear estimation stage of the standard method. A linear meth...

• Type: Conference
• Year: 2007
• Where: ICCV
• Authors: Aubrey K. Dunne, John Mallon, Paul F. Whelan
• Keywords: Computer Vision, Generic Calibration Method, ICCV 2007, Linear Estimation Stage, Standard Generic Calibration