Application of parallel aligned nematic liquid crystal spatial light modulator (PAL-SLM) to optical joint transform correlator

被引：0

作者：

Hara, T

Kobayashi, Y

Toyoda, H

Mukohzaka, N

Yoshida, N

Igasaki, Y

机构：

来源：

SECOND INTERNATIONAL CONFERENCE ON OPTICAL INFORMATION PROCESSING | 1996年 / 2969卷

关键词：

spatial light modulator; liquid crystal; optical computer; optical computing; optical analog computing; correlator; correlation; fingerprint identification;

D O I：

10.1117/12.262626

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed a compact joint transform correlator (JTC) by using the parallel aligned nematic liquid crystal spatial light modulator (PAL-SLM) as a real time hologram device, and have applied the correlator to fingerprint identification. The identification performance was evaluated using 2400 data from 600 fellow workers. The test results showed that the false-reject rate was 0.2% with 0.20/0 false acceptance. The response time of the system was less than 0.1 seconds as a result of parallel processing in the optical system.

引用

页码：598 / 603

页数：6