Time-derivative adaptive silicon photoreceptor array
- Creators
- Delbrück, Tobi
- Mead, Carver A.
- Other:
- Jayadev, T. S. Jay
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.
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.Attached Files
Published - 92.pdf
Submitted - retreset.pdf
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Additional details
- Eprint ID
- 55339
- Resolver ID
- CaltechAUTHORS:20150227-114653482
- NAV N00014-89-J-1675
- Office of Naval Research (ONR)
- NIH
- Systems Development Foundation
- California Department of Commerce Competitive Technologies Program
- Defense Advanced Research Projects Agency (DARPA)
- Hewlett-Packard
- Created
-
2015-03-04Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 1541