Detection and Accurate Localization of Circular Fiducials under Highly Challenging ConditionsReport as inadecuate




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* Corresponding author 1 SRL - Simula Research Laboratory Lysaker 2 IRIT - Institut de recherche en informatique de Toulouse

Abstract : Using fiducial markers ensures reliable detection and identification of planar features in images. Fiducials are used in a wide range of applications, especially when a reliable visual reference is needed, e.g., to track the camera in cluttered or textureless environments. A marker designed for such applications must be robust to partial occlusions, varying distances and angles of view, and fast camera motions. In this paper, we present a robust, highly accurate fiducial system, whose markers consist of concentric rings, along with its theoretical foundations. Relying on projective properties, it allows to robustly localize the imaged marker and to accurately detect the position of the image of the common circle center. We demonstrate that our system can detect and accurately localize these circular fiducials under very challenging conditions and the experimental results reveal that it outperforms other recent fiducial systems.

Keywords : Cameras Robustness Image edge detection Computer vision Feature extraction Detection algorithms





Author: Lilian Calvet - Pierre Gurdjos - Carsten Griwodz - Simone Gasparini -

Source: https://hal.archives-ouvertes.fr/



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