Active pixel sensor with on-chip normal flow computation on the read out

Viktor Grue, Ralph Etienne-Cummings

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 250 × 250 Active Pixel Sensor (APS) with on-chip spatiotemporal difference computation capabilities is presented. The spatiotemporal difference imager, fabricated in TSMC 0.35μ process, contains in-pixel storage elements for previous and current frames and difference computational units outside the imaging array. A novel scan out technique allows for parallel computation of spatial and temporal 1-D derivatives on read out. The final motion estimation, i.e. the ratio of the temporal and spatial derivates, is computed off chip, but it can be easily implemented in hardware. Experimental data is presented to validate the accuracy of the magnitude and angle of the computed target velocities. The chip consumes 20mW at 50 fps from 3.3V power supply.

Original languageEnglish (US)
Title of host publication11th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2004
Pages215-218
Number of pages4
StatePublished - Dec 1 2004
Externally publishedYes
Event11th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2004 - Tel Aviv, Israel
Duration: Dec 13 2004Dec 15 2004

Publication series

Name11th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2004

Conference

Conference11th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2004
CountryIsrael
CityTel Aviv
Period12/13/0412/15/04

ASJC Scopus subject areas

  • Engineering(all)

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