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Calibrating Pan-Tilt Cameras with Telephoto Lenses

  • Xinyu Huang
  • Jizhou Gao
  • Ruigang Yang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4843)

Abstract

Pan-tilt cameras are widely used in surveillance networks. These cameras are often equipped with telephoto lenses to capture objects at a distance. Such a camera makes full-metric calibration more difficult since the projection with a telephoto lens is close to orthographic. This paper discusses the problems caused by pan-tilt cameras with long focal length and presents a method to improve the calibration accuracy. Experiments show that our method reduces the re-projection errors by an order of magnitude compared to popular homography-based approaches.

Keywords

Focal Length Camera Calibration Intrinsic Parameter Stereo Camera Telephoto Lens 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Xinyu Huang
    • 1
  • Jizhou Gao
    • 1
  • Ruigang Yang
    • 1
  1. 1.Graphics and Vision Technology Lab (GRAVITY), Center for Visualization and Virtual Environments, University of KentuckyUSA

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