A Method to Automate the Calibration of a Multiple Fiducial Marker Setup

Abstract

This work proposes a new method to automate the calibration of multiple fiducial markers distributed over an Augmented Reality scene, in order to obtain stable relations, mainly among markers that will never be visible in a same video frame. The main feature of the method is to maintain all relationships between markers in each video frame. These relationships will be updated during calibration in order to obtain an accurate result. During the execution, the referential (base) marker of the system may change when markers with smaller error appears in the scene. The application produces the output configuration file of a multiple marker augmented reality environment in the same format used by AVRLib and ARToolKit libraries.