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.
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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. | ||||||||||||||
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Series Name: | Proceedings of SPIE | ||||||||||||||
Issue or Number: | 1541 | ||||||||||||||
DOI: | 10.1117/12.49323 | ||||||||||||||
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: | INVALID USER | ||||||||||||||
Deposited On: | 04 Mar 2015 00:00 | ||||||||||||||
Last Modified: | 10 Nov 2021 20:45 |
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