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An Automatic and Robust Chessboard Corner Extraction

  • Xifan Shi
  • Ning Hong
  • Tiefeng Cai
Chapter
  • 882 Downloads
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6758)

Abstract

Camera calibration is crucial in many applications. Our lab uses the world wide used camera calibration toolbox for Matlab and finds its two major drawbacks, i.e., manual selection of the four extreme corners and inability to process images larger than 2MP. In this paper, a new method to eliminate these drawbacks is presented. The original chessboard is modified slightly and based on the added boundary composed of four narrow rectangles, the four extreme corners can be forecast. In addition, because it is implemented by C++, the 2MP limitation no longer exists. The experiment shows that even without multithread optimization and even for a 50MP photo, the corners can be extracted within 20 seconds on a 3GHz CPU.

Keywords

Camera Calibration Corner Extraction 3D Scanner 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Xifan Shi
    • 1
  • Ning Hong
    • 1
  • Tiefeng Cai
    • 1
  1. 1.Zhijiang CollegeZhejiang University of TechnologyHangzhouChina

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