Image Capturing and Processing
Correcting images electronically
12.03.2008 - Photonik international 1/2008 | [ deutsche Version lesen ]
Most lenses cause geometric distortions. This is especially the case with wide-angle lenses, and this may be termed as the “fish-eye effect”. It is notable that the geometrical distortion does not affect the general quality of the picture, only its geometry. Within certain limits this distortion can therefore be arithmetically corrected. In this article we will discuss methods for geometrically removing distortion in wide-angle images.
Authors: Georg P. Israel, Hakan O. Sakman, CMOSVision GmbH, Schaffhausen, Switzerland