Monoplanar Camera Calibration Iterative Multi-Step Approach

摘要

A new method for robotics camera calibration based on a linear computation and using a coplanar group of calibration points is presented in this paper. This new method suppresses the constraint presented by the RAC calibration model of having an incidence angle between the optical axis and the calibration plane of at least 30 degrees. The parameters are obtained based on a multi-step calculation, and the accuracy of the parameters is strongly increased when used on a iterative calibration. Experimental and simulated analyses results are presented. A comparative analysis between this new method and the RAC method is presented. 1. Introduction From the mathematical point of view, an image is a projection of a three dimensional space onto a two dimensional space. Geometric camera calibration is the process of determining the 2D-3D mapping between the camera and the world coordinate system. Most of the camera calibration techniques are polarized between approaches closely related to the ...