Information Processing in Primate Retinal Cone Pathways: A Model

At the retinal level, the strategies utilized by biological visual systems allow them to outperform machine vision systems, serving to motivate the design of electronic or \smart" sensors based on similar principles. Design of such sensors in silicon rst requires a model of retinal information processing which captures the essential features exhibited by biological retinas. In this report, a simple retinal model is presented, which qualitatively accounts for the achromatic information processing in the primate cone system. The computer retina model exhibits many of the properties found in biological retin as such as data reduction through non-uniform sampling, adaptation to a large dynamic range of illumination levels, variation of visual acuity with illumination level, and enhancement of spatiotemporal contrast information. (NSERC) of Canada. MDL would also like to acknowledge the nancial support of the CIAR and PRECARN.