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Proceedings of the 1993 IEEWSJ International Conference on Intelligent Robots and Systems Yokohama, Japan July 2630,1993 MODELING FISH-EYE LENSES *

By Anup Basu and Sergio Licardie

Abstract

Combining variable-resolution with active vision provides addi-The human visual system can be characterized tional advantages, allowing us to tackle more complex problems. as a variable-resolution system: foveal information is pro- The advantages of active approaches to solving several vision cessed at very high spatial resolution whereas peripheral problems have been pointed out in [l]. information is processed at low spatial resolution. Var-Existing variable-resolution transforms are expensive to comious transforms have been proposed to model spatially pute and special sensors need to be designed in order to digvarying resolution. Unfortunately, special sensors need itize images according to the proposed models. The variableto be designed to acquire images according to existing resolution transform proposed in this paper, namely the Fishtransforms. In this work, two models of fish-eye trans- Eye Transform, is based on the characteristics of fish-eye lenses, form are presented. The validity of the transformations is making it as easy to implement using off the shelf lenses. demonstrated by fitting the alternative models to a real The organization of this paper is as follows: In Section 2, we fish-eye lens. describe some previous research on the different schemes that I

Year: 2010
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