標題: A vision-based approach to extracting the tilt angle and altitude of a PTZ camera - art. no. 606609
作者: Chen, I-Hsien
Wang, Sheng-Jyh
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: camera calibration;PTZ camera;surveillance
公開日期: 2006
摘要: In this paper, the relationship between the tilt angle and altitude of a PTZ camera and the 3D-to-2D coordinate transformation is built. A vision-based approach is then proposed to accomplish the estimation of tilt angle and altitude based on the observation of some simple objects lying on a horizontal plane, with known intrinsic parameters of the PTZ camera. The patterns could be a circle, a corner with known angle, more than two corners with unknown but equal angles, or more than two line segments with unknown but equal lengths. Furthermore, if we are given a few line segments with known but not necessarily equal length, the estimation of tilt angle and altitude can also be achieved via an optimization procedure. The impacts of parameter fluctuations are analyzed via computer simulations. Experimental results on real images conform to our analysis and demonstrate the efficiency of this approach.
URI: http://hdl.handle.net/11536/17176
http://dx.doi.org/10.1117/12.642296
ISBN: 0-8194-6106-7
ISSN: 0277-786X
DOI: 10.1117/12.642296
期刊: Vision Geometry XIV
Volume: 6066
起始頁: 6609
結束頁: 6609
Appears in Collections:Conferences Paper


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