CMOS current/voltage mode winner-take-all circuit with spatial filtering

Author

Fish, Alexander ; Yadid-Pecht, Orly

Author_Institution

Dept. of Electr. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Volume

3

fYear

2001

fDate

6-9 May 2001

Firstpage

636

Abstract

A CMOS current/voltage mode winner-take-all circuit (WTA) with spatial filtering for image processing applications is presented. This WTA circuit has a unique ability of spatial filtering that allows removal of the background from the image and is suitable for integration with CMOS Active Pixel Sensors. In this circuit, image intensity has been chosen for the input saliency map. The removal process is performed by zeroing the values of the image background intensity levels and transferring the new saliency map to a standard WTA circuit, so only the potential objects of interest are compared by the WTA. Two circuits, current mode and voltage mode WTA circuits with filtering, have been implemented in 0.5 um submicron CMOS technology. Their operation is discussed and simulation results are reported

Keywords

CMOS image sensors; current-mode circuits; spatial filters; 0.5 micron; CMOS; active pixel sensors; current/voltage mode circuit; image intensity; image processing applications; input saliency map; removal process; spatial filtering; submicron CMOS technology; winner-take-all circuit; CMOS image sensors; CMOS process; CMOS technology; Circuits; Electronic mail; Filtering; Image processing; Intelligent sensors; Marine animals; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921391

Filename

921391