1 November 1991 Time-derivative adaptive silicon photoreceptor array
Author Affiliations +
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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tobi Delbruck, Carver A. Mead, "Time-derivative adaptive silicon photoreceptor array", Proc. SPIE 1541, Infrared Sensors: Detectors, Electronics, and Signal Processing, (1 November 1991); doi: 10.1117/12.49323; https://doi.org/10.1117/12.49323
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

A Linear Pyroelectric Array IR Sensor
Proceedings of SPIE (May 01 1986)
Contrast and motion-sensitive silicon retina
Proceedings of SPIE (December 19 1996)
Uncooled thermal imaging at Texas Instruments
Proceedings of SPIE (November 01 1993)
Compensated digital readout family
Proceedings of SPIE (November 01 1991)

Back to Top