Mead, Carver A. and Mahowald, M. A. (1988) A silicon model of early visual processing. Neural Networks, 1 (1). pp. 91-97. ISSN 0893-6080. http://resolver.caltech.edu/CaltechAUTHORS:20141217-152336241
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An analog model of the first stages of retinal processing has been constructed on a single silicon chip. Each photoreceptor computes the logarithm of the incident light intensity. A resistive network is used to compute a spatially smoothed version of the receptor outputs. An amplified difference between the receptor signals and their smoothed counterparts forms a second-order spatial filter. Measured outputs from an experimental 48 × 48 pixel array show many of the characteristics of the bipolar cells in vertebrate retina.
|Additional Information:||Copyright © 1988 Pergamon Journals. Received and accepted 5 October 1987.|
|Subject Keywords:||Retina; Machine vision; Analog CMOS; Spatial filter; Neural model|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Kristin Buxton|
|Deposited On:||17 Dec 2014 23:28|
|Last Modified:||17 Dec 2014 23:28|
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