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Adaptive Retina with Center-Surround Receptive Field

Liu, Shih-Chii and Boahen, Kwabena (1996) Adaptive Retina with Center-Surround Receptive Field. In: Advances in Neural Information Processing Systems 8 (NIPS 1995). Advances in Neural Information Processing Systems. No.8. MIT Press , Cambridge, MA, pp. 679-684. ISBN 0-262-20107-0.

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Both vertebrate and invertebrate retinas are highly efficient in extracting contrast independent of the background intensity over five or more decades. This efficiency has been rendered possible by the adaptation of the DC operating point to the background intensity while maintaining high gain transient responses. The center-surround properties of the retina allows the system to extract information at the edges in the image. This silicon retina models the adaptation properties of the receptors and the antagonistic center-surround properties of the laminar cells of the invertebrate retina and the outer-plexiform layer of the vertebrate retina. We also illustrate the spatio-temporal responses of the silicon retina on moving bars. The chip has 59x64 pixels on a 6.9x6.8 mm^2 die and it is fabricated in 2 µm n-well technology.

Item Type:Book Section
Additional Information:© 1996 Massachusetts Institute of Technology. We thank Carver Mead for his support and encouragement. SC Liu is supported by an NIMH fellowship and K Boahen is supported by a Sloan fellowship. We thank Tobias Delbriick for the inspiration and help in testing the design. We also thank Rahul Sarpeshkar and Bradley Minch for comments. Fabrication was provided by MOSIS.
Funding AgencyGrant Number
National Institutes of Mental Health (NIMH)UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Series Name:Advances in Neural Information Processing Systems
Issue or Number:8
Record Number:CaltechAUTHORS:20160222-162539267
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64667
Deposited On:23 Feb 2016 00:37
Last Modified:03 Oct 2019 09:40

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