BMVC 2004, Kingston, 7th-9th Sept, 2004

A Geometrically Calibrated Pinhole Camera Model for Single Omnidirectional Imaging System
D. Moldovan, T. Wada (Wakayama University)

This paper presents a perspective imaging model that is able to display undistorted
images captured with uncalibrated cameras on a cylindrical virtual screen and
to detect the correct location of the viewing point respectively. By using a calibration
pattern and thus avoiding complicated mathematical models, the optical center can
be detected by tracking the optical rays generated by pairs of 3D points that have the
same projection on the image plane. The calibration pattern is also used in order to
generate normalized virtual screens on which captured images are back projected, a
process that eliminates the deformations. Experimental results for single viewpoint
omnidirectional cameras demonstrate the effectiveness of our method.
(pdf article)