Scheduled System Maintenance:
On Monday, April 27th, IEEE Xplore will undergo scheduled maintenance from 1:00 PM - 3:00 PM ET (17:00 - 19:00 UTC). No interruption in service is anticipated.
By Topic

Easy Camera Calibration From Inter-Image Homographies

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Xiaochun Cao ; University of Central Florida, Orlando, FL ; Foroosh, H.

This paper addresses the problem of calibrating a pinhole camera using images of a symmetric object. Assuming a unit aspect ratio, and zero skew, we show that inter-image homographies can be expressed as a function of the principal point. By minimizing the symmetric transfer error of geometric distances, we thus obtain an accurate solution for the calibration parameters. We show that the approach can also be extended to a calibration technique using images of a 1D object with a fixed pivoting point. The advantage of our approach over existing methods is that we rely only on inter-image homgraphies, and hence no knowledge of the world to image homography is required. To demonstrate the effectiveness of the approach both in the case of symmetric objects and 1D objects, we present the processing results for both synthetic and real images, and provide a quantitative comparison with Zhang's flexible calibration technique (2000), and his 1D calibration method (2002).

Published in:

Computer Vision and Pattern Recognition Workshop, 2004. CVPRW '04. Conference on

Date of Conference:

27-02 June 2004