A Study on Effectiveness of Control Points on the 2D plane for Calibration of Non-metric Camera

概要

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Many camera calibration methods for a non-metric camera have been proposed. Some of them use a set of control points distributed on the 2D plane instead of a set of control points distributed in the 3D space. However there are few reports to demonstrate effectiveness of camera calibration using a set of 2D control points. Therefore, we conducted a numerical simulation in order to examine the effectiveness of camera calibration using a set of 2D control points. In the simulation calibration results obtained by three methods using a set of 2D control points were compared with those obtained by the method using a set of 3D control points with the depth of the distribution from 1/5 to 1/20 of the object distance. Evaluation of calibration results was performed by differences of image distortions calculated at all pixels on the image between the obtained image distortion model and the setup one. The simulation results indicate that the calibration methods using a set of 2D calibration points can provide a reliable set of camera parameters.
社団法人日本写真測量学会の論文