ON-BOARD OPTICAL JOINT TRANSFORM CORRELATOR FOR REAL-TIME ROAD SIGN RECOGNITION

被引：27

作者：

GUIBERT, L

KERYER, G

SERVEL, A

ATTIA, M

MACKENZIE, HS

PELLATFINET, P

DELATOCNAYE, JLDB

机构：

[1] ECOLE NAVALE,TRAITEMENT SIGNAL LANVEOC POULMIC GRP,F-29240 BREST,FRANCE

[2] UNIV CAMBRIDGE,DEPT ENGN,CAMBRIDGE CB2 1PZ,ENGLAND

[3] PSA PEUGEOT CITROEN,DIRECT RECH & AFFAIRS SCI,F-78140 VELIZY VILLACOUBL,FRANCE

来源：

OPTICAL ENGINEERING | 1995年 / 34卷 / 01期

关键词：

OPTICAL CORRELATION; PATTERN RECOGNITION; FERROELECTRIC LIQUID-CRYSTAL SPATIAL LIGHT MODULATORS;

D O I：

10.1117/12.183999

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design, implement, and test an on-board optical joint transform correlator, using a nonlinear optically addressed ferroelectric liquid-crystal spatial light modulator in the Fourier plane. This compact correlator performs real-time and on-board recognition tasks, such as road sign recognition. The influence of the nonlinearity in the Fourier plane is investigated, and scale-invariant filters are tested and implemented. Preliminary results from real-time dynamic scenario experiments are presented. Electronic and optical pre- and postprocessing as well as the extension to silicon backplane devices are discussed.

引用

页码：135 / 143

页数：9

共 23 条

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CROSSLAND WA, 1992, P SOC PHOTO-OPT INS, V1665, P114, DOI 10.1117/12.60405

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