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A robust chessboard detector for geometric camera calibration

 
: Hoffmann, Mathis; Ernst, Andreas; Bergen, Tobias; Hettenkofer, Sebastian; Garbas, Jens-Uwe

:

Imai, Francisco (Ed.) ; Institute for Systems and Technologies of Information, Control and Communication -INSTICC-, Setubal:
12th International Conference on Computer Vision Theory and Applications, VISIGRAPP 2017. Proceedings. Vol.4: VISAPP : February 27-1, 2017, in Porto, Portugal
SciTePress, 2017
ISBN: 978-989-758-225-7
S.34-43
International Joint Conference on Computer Vision and Computer Graphics Theory and Applications (VISIGRAPP) <12, 2017, Porto>
International Conference on Computer Vision Theory and Applications (VISAPP) <12, 2017, Porto>
Englisch
Konferenzbeitrag
Fraunhofer IIS ()
Objekterkennung; Kameras für BV; Kalibrierung; Computer Assistierte Endoskopie

Abstract
We introduce an algorithm that detects chessboard patterns in images precisely and robustly for application in camera calibration. Because of the low requirements on the calibration images, our solution is particularly suited for endoscopic camera calibration. It successfully copes with strong lens distortions, partially occluded patterns, image blur, and image noise. Our detector initially uses a sparse sampling method to find some connected squares of the chessboard pattern in the image. A pattern-growing strategy iteratively locates adjacent chessboard corners with a region-based corner detector. The corner detector examines entire image regions with the help of the integral image to handle poor image quality. We show that it outperforms recent solutions in terms of detection rates and performs at least equally well in terms of accuracy.

: http://publica.fraunhofer.de/dokumente/N-479916.html