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Orientation-Selective VLSI Retina

Allen, Tim and Mead, Carver and Faggin, Federico and Gribble, Glenn (1988) Orientation-Selective VLSI Retina. In: Visual Communications and Image Processing '88: Third in a Series. Proceedings of the SPIE. No.1001. SPIE , pp. 1040-1046. http://resolver.caltech.edu/CaltechAUTHORS:20151012-141538820

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Abstract

In both biological and artificial pattern-recognition systems, the detection of oriented light-intensity edges is an important preprocessing step. We have constructed a silicon VLSI device containing an array of photoreceptors with additional hardware for computing center-surround (edge-enhanced) response as well as edge orientation at every point in the receptor lattice. Because computing the edge orientations in the array local to each photoreceptor would have made each pixel-computation unit too large (thereby reducing the resolution of the device), we devised a novel technique for computing the orientations outside of the array. All the transducers and computational elements are analog circuits made with a conventional CMOS process.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.969056DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1254590PublisherArticle
Additional Information:© 1988 SPIE--The International Society for Optical Engineering.
Record Number:CaltechAUTHORS:20151012-141538820
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151012-141538820
Official Citation:Tim Allen ; Carver Mead ; Federico Faggin and Glenn Gribble "Orientation-Selective VLSI Retina", Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, 1040 (October 25, 1988); doi:10.1117/12.969056; http://dx.doi.org/10.1117/12.969056
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61008
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:15 Oct 2015 21:01
Last Modified:15 Oct 2015 21:01

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