A Caltech Library Service

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.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


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
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.
Funding AgencyGrant Number
Office of Naval Research (ONR)NAV N00014-89-J-1675
Systems Development FoundationUNSPECIFIED
California Department of Commerce Competitive Technologies ProgramUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:1541
Record Number:CaltechAUTHORS:20150227-114653482
Persistent URL:
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;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55339
Deposited On:04 Mar 2015 00:00
Last Modified:10 Nov 2021 20:45

Repository Staff Only: item control page