A 500-dpi cellular-logic processing array for fingerprint-image enhancement and verification

Author

Fujii, Koji ; Nakanishi, Mamoru ; Shigematsu, Satoshi ; Morimura, Hiroki ; Hatano, Takahiro ; Ikeda, Namiko ; Shimamura, Toshishige ; Okazaki, Yukio ; Kyuragi, Hakaru

Author_Institution

NTT Lifestyle & Environ. Technol. Labs., Kanagawa, Japan

fYear

2002

fDate

2002

Firstpage

261

Lastpage

264

Abstract

A 500-dpi cellular-logic processing array performs all fingerprint identification steps on one chip, from image acquisition, enhancement, to verification. Morphological functions for executing these steps are implemented in a 30×50-μm² processing unit. A single-cycle datapath and a shared logic structure enable compact implementation of the processing unit. A fabricated 224×256-pixel fingerprint identification LSI demonstrates fully-functional image processing and practical accuracy of identification.

Keywords

CMOS logic circuits; cellular arrays; fingerprint identification; image enhancement; mathematical morphology; 500-dpi cellular-logic processing array; fingerprint identification LSI; fingerprint identification steps; fingerprint-image enhancement; four-metal CMOS; fully-functional image processing; image acquisition; image enhancement; image verification; morphological functions; shared logic structure; single-cycle datapath; Circuits; Fingerprint recognition; Image matching; Image processing; Image resolution; Large scale integration; Logic arrays; Logic design; Noise reduction; Sensor arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002

Print_ISBN

0-7803-7250-6

Type

conf

DOI

10.1109/CICC.2002.1012809

Filename

1012809