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Appeared in Int'l Conf. on Pattern Recognition, Vol. 1, pp. 896-899, Barcelona, 2000 c 2000 IEEE
 

Summary: Appeared in Int'l Conf. on Pattern Recognition, Vol. 1, pp. 896-899, Barcelona, 2000
c 2000 IEEE
Estimating Sensor Orientation in Cameras
Manoj Aggarwal and Narendra Ahuja
University of Illinois at Urbana-Champaign, Beckman Institute
405 N. Mathews Ave, Urbana, IL 61801, USA
E-mail: fmanoj,ahujag@vision.ai.uiuc.edu
Internet: http://vision.ai.uiuc.edu/
Abstract
For most imaging cameras, it is desirable that the sensor
plane be perpendicular to the optical axis. Such an orien-
tation ensures that the imaging configuration is perspective
and planar scene objects perpendicular to the optical axis
can be focussed in their entirety. In this paper, we have
presented an image processing based method to estimate
and subsequently correct the sensor tilt with precision. We
propose to measure the tilt by measuring the variation of
defocus in an image of a planar calibration chart placed
perpendicular to the optical axis. We have shown that the
proposed defocus based method is inherently more accurate

  

Source: Ahuja, Narendra - Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign

 

Collections: Computer Technologies and Information Sciences; Engineering