Analytically Solving Radial Distortion Parameters

Most camera calibration algorithms consider parameters that define the lens distortion mapping. The usual way to determine these parameters is to minimize a nonlinear optimization problem in the final step of a calibration algorithm. This neglects the fact that given the projection matrix and the calibration data the parameters of a radial distortion can be determined analytically. In this article we show that the problem can be solved in a closed form. We present an algorithm in which this is done and compare it to classic approaches.

• Type: Conference
• Year: 2005
• Where: CVPR
• Authors: Simone Graf, Tobias Hanning
• Keywords: Algorithms Consider Parameters, Calibration Algorithm, Computer Vision, CVPR 2005, Lens Distortion Mapping, Most Camera Calibration, Nonlinear Optimization Problem