Dual multichannel optical wavelet transform processor

被引：2

作者：

Feng, WY ^{[1
]}

Yan, YB ^{[1
]}

Jin, GF ^{[1
]}

Wu, MX ^{[1
]}

He, QS ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

来源：

ALGORITHMS, DEVICES, AND SYSTEMS FOR OPTICAL INFORMATION PROCESSING III | 1999年 / 3804卷

关键词：

multichannel processing; volume holographic storage; wavelet correlation; wavelet transform; human face recognition;

D O I：

10.1117/12.363971

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

Based on the theory of volume holographic associative storage in a photorefractive crystal and that of binary optics, a compact dual multichannel optical wavelet transform processor is proposed and constructed. Both wavelet correlation and wavelet transform can be complemented by the system. Multi-pattern channels are achieved by the inherent parallelism of volume holographic storage. Angle multiplexed holograms of wavelet filtered pattern images are recorded in the crystal. Multi-wavelet channels are accomplished by a Dammann grating, which is a binary optical element for spectrum duplication. The grating is adopted to generate a set of channels with different wavelet filters. Wavelet correlation peaks in different wavelet channels are synthesized to improve the recognition accuracy by multiplication pixel by pixel. Wavelet transform results in different wavelet channels are stored in the crystal and can be restored for recognition or segmentation. The application of the system in human face recognition is studied.

引用

页码：249 / 256

页数：8

共 13 条

[1]

BURR GW, 1994, P SOC PHOTO-OPT INS, V2297, P402, DOI 10.1117/12.187311

[2] Multichannel wavelet correlators by the use of associative storage in a photorefractive material [J].

Feng, WY ;

Huang, GG ;

Yan, YB ;

Jin, GF ;

Wu, MX .

PHOTOREFRACTIVE MATERIALS: PHENOMENA AND RELATED APPLICATIONS II, 1998, 3554 :149-154

[3]

FENG WY, 1999, IN PRESS P SPIE, V3813

[4] Volume holographic storage for large relational databases [J].

Goertzen, BJ ;

Mitkas, PA .

OPTICAL ENGINEERING, 1996, 35 (07) :1847-1853

[5] VOLUME HOLOGRAPHIC STORAGE AND RETRIEVAL OF DIGITAL DATA [J].

HEANUE, JF ;

BASHAW, MC ;

HESSELINK, L .

SCIENCE, 1994, 265 (5173) :749-752

[6] OPTICAL IMPLEMENTATION OF A WAVELET TRANSFORM BY THE USE OF DYNAMIC HOLOGRAPHIC RECORDING IN A PHOTOREFRACTIVE MATERIAL [J].

JOSEPH, J ;

OURA, T ;

MINEMOTO, T .

APPLIED OPTICS, 1995, 34 (20) :3997-4003

[7] Object recognition with a wavelet-transform-based joint transform correlator [J].

Li, J ;

Zhang, YC ;

Hu, JS .

OPTICAL ENGINEERING, 1996, 35 (03) :775-777

[8] Pattern recognition using sequential matched filtering of wavelet coefficients [J].

Maestre, RA ;

Garcia, J ;

Ferreira, C .

OPTICS COMMUNICATIONS, 1997, 133 (1-6) :401-414

[9] Two-dimensional wavelet processor [J].

Ouzieli, I ;

Mendlovic, D .

APPLIED OPTICS, 1996, 35 (29) :5839-5846

[10] OPTICAL WAVELET MATCHED-FILTER [J].

ROBERGE, D ;

SHENG, YL .

APPLIED OPTICS, 1994, 33 (23) :5287-5293

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