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 language | English |
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Pages (from-to) | 159-165 |
Number of pages | 7 |
Journal | IEEE Transactions on Electron Devices |
Volume | 50 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2003 |
Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received April 17, 2002; revised July 12, 2002. This work was supported by the Israeli Ministry of Science. The review of this paper was arranged by Editor A. Theuwissen. The authors are with the VLSI Systems Center, Ben-Gurion University, Beer-Sheva 84105, Israel (e-mail: [email protected]; [email protected]; [email protected]). Digital Object Identifier 10.1109/TED.2002.807250
Funding
Manuscript received April 17, 2002; revised July 12, 2002. This work was supported by the Israeli Ministry of Science. The review of this paper was arranged by Editor A. Theuwissen. The authors are with the VLSI Systems Center, Ben-Gurion University, Beer-Sheva 84105, Israel (e-mail: [email protected]; [email protected]; [email protected]). Digital Object Identifier 10.1109/TED.2002.807250
Funders | Funder number |
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Israeli Ministry of Science |
Keywords
- Active pixel sensor (APS)
- CMOS
- Filter
- Image processing
- Pattern recognition
- Spatial filtering
- Very large scale integration (VLSI)
- Winner-take-all (WTA)