Geometric calibration of a PTZ camera

Chi Farn Chen, Su Rung Yang, Li Yu Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Camera surveillance systems have become increasingly important. PTZ (Pan/Tilt/Zoom) camera is a promising surveillance system because it has large virtual field-of-view (FOV) (obtained by panning and tilting) and can view a scene over a greater range of scale by zooming action. Moreover, PTZ camera possesses the feasibility to perform the transformation between the 2D camera image space and 3D object space. In order to increase the accuracy of the transformation, this study proposes an operational procedure for the calibration of PTZ camera. The calibration procedures need to consider: (1) the variation of interior orientation parameters with the different scales of the zoom action; (2) the influence on the exterior orientation parameters due to the discrepancy between the rotation center and the projective center of the camera. The results indicate that the calibration is a necessary procedure for improving the geometric accuracy of PTZ camera.

Original languageEnglish
Title of host publication29th Asian Conference on Remote Sensing 2008, ACRS 2008
Number of pages6
StatePublished - 2008
Event29th Asian Conference on Remote Sensing 2008, ACRS 2008 - Colombo, Sri Lanka
Duration: 10 Nov 200814 Nov 2008

Publication series

Name29th Asian Conference on Remote Sensing 2008, ACRS 2008


Conference29th Asian Conference on Remote Sensing 2008, ACRS 2008
Country/TerritorySri Lanka


  • Calibration
  • Collinearity equation
  • PTZ (Pan/Tilt/Zoom) camera


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