All-optical image processing by means of a photosensitive nonlinear liquid-crystal film: edge enhancement and image addition-subtraction

被引：65

作者：

Shih, MY ^{[1
]}

Shishido, A ^{[1
]}

Khoo, IC ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

来源：

OPTICS LETTERS | 2001年 / 26卷 / 15期

关键词：

Doping (additives) - Dyes - Nematic liquid crystals - Nonlinear optics - Photosensitivity;

D O I：

10.1364/OL.26.001140

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate two simple yet efficient all-optical image-processing techniques that use nonlinear photosensitive dye-doped nematic liquid-crystal films, namely, edge enhancement and image addition-subtraction operations. These films require no external bias and function at much lower optical powers and shorter response times than other conventional methods. (C) 2001 Optical Society of America.

引用

页码：1140 / 1142

页数：3

共 15 条

[1] All-optical image processing with a supranonlinear dye-doped liquid-crystal film
Shih, MY
Shishido, A
Chen, PH
Wood, MV
Khoo, IC
OPTICS LETTERS, 2000, 25 (13) : 978 - 980
[2] All-optical neural-net-like image processing with photosensitive nonlinear nematic film
Khoo, IC
Chen, K
Diaz, A
OPTICS LETTERS, 2003, 28 (23) : 2372 - 2374
[3] Real-time optical image subtraction and edge enhancement using ferroelectric liquid-crystal devices based on speckle modulation
Lin, X
Ohtsubo, J
Takemori, T
APPLIED OPTICS, 1996, 35 (17): : 3148 - 3154
[4] OPTICAL-IMAGE PROCESSING USING LIQUID-CRYSTAL PANELS
HANAZAWA, Y
UCHIDA, T
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1992, 31 (3B): : L349 - L351
[5] OPTICAL-IMAGE PROCESSING WITH LIQUID-CRYSTAL DISPLAY FOR IMAGE INTENSIFIER TELEVISION SYSTEMS
LAM, KL
CHAN, HP
DOI, K
MEDICAL PHYSICS, 1988, 15 (06) : 838 - 845
[6] OPTICAL SWITCHING AND IMAGE STORAGE BY MEANS OF AZOBENZENE LIQUID-CRYSTAL FILMS
IKEDA, T
TSUTSUMI, O
SCIENCE, 1995, 268 (5219) : 1873 - 1875
[7] Liquid crystal photonics: Optical switching and image storage by means of azobenzene liquid-crystal films
Shishido, A
Tsutsumi, O
Ikeda, T
LIQUID CRYSTALS FOR ADVANCED TECHNOLOGIES, 1996, 425 : 213 - 224
[8] Adaptive restoration of a partially coherent blurred image using an all-optical feedback interferometer with a liquid-crystal device
Shirai, T
Barnes, TH
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2002, 19 (02) : 369 - 377
[9] Liquid crystal fiber arrays for image transmission and all-optical switching and limiting application
Khoo, I.C.
Lee, M.
Wang, K.
Wood, M.
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 1996,
[10] Real-time restoration of a blurred image with a liquid-crystal adaptive-optics system based on all-optical feedback interferometry
Shirai, T
Barnes, TH
Haskell, TG
OPTICS COMMUNICATIONS, 2001, 188 (5-6) : 275 - 282

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