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Time-derivative adaptive silicon photoreceptor array

Delbrück, Tobi and Mead, Carver A. (1991) Time-derivative adaptive silicon photoreceptor array. In: Infrared Sensors: Detectors, Electronics, and Signal Processing. Proceedings of SPIE. No.1541. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 92-99. ISBN 0819406694 . https://resolver.caltech.edu/CaltechAUTHORS:20150227-114653482

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Abstract

We designed and tested a two-dimensional silicon receptor array constructed from pixels that temporally high-pass filter the incident image. There are no surround interactions in the array; all pixels operate independently except for their correlation due to the input image. The high- pass output signal is computed by sampling the output of an adaptive, high-gain, logarithmic photoreceptor during the scanout of the array. After a pixel is sampled, the output of the pixel is reset to a fixed value. An interesting capacitive coupling mechanism results in a controllable high-pass filtering operation. The resulting array has very low offsets. The computation that the array performs may be useful for time-domain image processing, for example, motion computation.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.49323DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=969561PublisherArticle
Additional Information:© 1991 SPIE--The International Society for Optical Engineering. This work was supported by the Office of Naval Research (grant NAV N00014-89-J-1675), the National Institute of Health, the Systems Development Foundation, and the State of California Department of Commerce Competitive Technologies Program. Computation was provided by a grant from Hewlett-Packard, and chip fabrication was supported by DARPA, through the MOSIS service.
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)NAV N00014-89-J-1675
NIHUNSPECIFIED
Systems Development FoundationUNSPECIFIED
California Department of Commerce Competitive Technologies ProgramUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Hewlett-PackardUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:1541
Record Number:CaltechAUTHORS:20150227-114653482
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150227-114653482
Official Citation:Tobi Delbruck and Carver A. Mead "Time-derivative adaptive silicon photoreceptor array", Proc. SPIE 1541, Infrared Sensors: Detectors, Electronics, and Signal Processing, 92 (November 1, 1991); doi:10.1117/12.49323; http://dx.doi.org/10.1117/12.49323
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55339
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:04 Mar 2015 00:00
Last Modified:03 Oct 2019 08:05

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