CMOS fingerprint sensor with automatic local contrast adjustment and pixel-parallel encoding logic

Author

Jung, S. ; Thewes, R. ; Scheiter, T. ; Goser, K. ; Weber, W.

Author_Institution

Corp. Technol. Dept., Siemens AG, Munich, Germany

fYear

1999

fDate

17-19 June 1999

Firstpage

161

Lastpage

164

Abstract

A CMOS fingerprint sensor is presented with a self-biasing automatic local contrast adjustment technique for image binarization realized with a passive capacitive network. Pixel-parallel cellular logic is embedded into the sensor array and extracts the characteristic features of the fingerprint image without any additional area consumption. This single-chip sensing and encoding system is suited for low-power and low-cost applications.

Keywords

CMOS image sensors; capacitive sensors; fingerprint identification; image enhancement; low-power electronics; CMOS fingerprint sensor; area consumption; automatic local contrast adjustment; image binarization; low-power applications; passive capacitive network; pixel-parallel cellular logic; pixel-parallel encoding logic; CMOS image sensors; CMOS logic circuits; Capacitive sensors; Feature extraction; Fingerprint recognition; Image sensors; Logic arrays; Pixel; Sensor arrays; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 1999. Digest of Technical Papers. 1999 Symposium on

Conference_Location

Kyoto, Japan

Print_ISBN

4-930813-95-6

Type

conf

DOI

10.1109/VLSIC.1999.797270

Filename

797270

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3217116