An APS with 2-D winner-take-all selection employing adaptive spatial filtering and false alarm reduction

Alexander Fish, Dmitry Turchin, Orly Yadid-Pecht

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

An active pixel sensor (APS) with two-dimensional winner-take-all (WTA) detection is presented. This system-on-a-chip employs adaptive spatial filtering of the processed image, with bad pixel elimination and false alarm reduction in case of a missing object. The circuit has a unique ability of adaptive spatial filtering that allows removal of the background from the image, one stage before it is transferred to the WTA detection circuit. A test chip of a 64* 64 array has been implemented in 0.5-μm CMOS technology, has a 49% fill factor, is operated by a 3.3-V supply, and dissipates 36 mW at video rate. System architecture and operation are discussed and measurements from the prototype chip are presented.

Original languageEnglish
Pages (from-to)159-165
Number of pages7
JournalIEEE Transactions on Electron Devices
Volume50
Issue number1
DOIs
StatePublished - 1 Jan 2003

Keywords

  • Active pixel sensor (APS)
  • CMOS
  • Filter
  • Image processing
  • Pattern recognition
  • Spatial filtering
  • Very large scale integration (VLSI)
  • Winner-take-all (WTA)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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