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Exploiting Geometric Restrictions in a PTZ Camera for Finding Point-correspondences Between Configurations
 

Summary: Exploiting Geometric Restrictions in a PTZ Camera for Finding
Point-correspondences Between Configurations
Birgi Tamersoy and J.K. Aggarwal
Computer and Vision Research Center
The University of Texas at Austin
Austin, Texas 78712-0240, U.S.A.
[birgi,aggarwaljk]@mail.utexas.edu
Abstract
A pan-tilt-zoom (PTZ) camera, fixed in location, may
perform only rotational movements. There is a class of
feature-based self-calibration approaches that exploit the
restrictions on the camera motion in order to obtain accu-
rate point-correspondences between two configurations of
a PTZ camera. Most of these approaches require extensive
computation and yet do not guarantee a satisfactory result.
In this paper, we approach this problem from a different
perspective. We exploit the geometric restrictions on the im-
age planes, which are imposed by the motion restrictions on
the camera. We present a simple method for estimating the
camera focal length and finding the point-correspondences

  

Source: Aggarwal, J. K. - Department of Electrical and Computer Engineering, University of Texas at Austin

 

Collections: Computer Technologies and Information Sciences; Engineering