LIQUID-CRYSTAL TELEVISION APPLIED TO A SPECKLE CORRELATION METHOD - REAL-TIME MEASUREMENT OF THE OBJECT DISPLACEMENT

被引：8
|
作者：
OKAMOTO, T
EGAWA, Y
ASAKURA, T
机构：
[1] Research Institute of Applied Electricity, Hokkaido University, Sapporo, Hokkaido
来源：
OPTICS COMMUNICATIONS | 1992年 / 88卷 / 01期
关键词：
Liquid crystal television;
D O I：
10.1016/0030-4018(92)90301-7
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A liquid crystal television (LCTV) is used to obtain in real time the correlation value of two speckle patterns that are produced at different times by a moving rough object. The lateral displacement of the object can be measured from the correlation value that is nearly proportional to the amount of shift between the speckle patterns. It is shown that the appropriate size exists for the speckles displayed on the LCTV which has a finite display area and resolution. A clipping technique for speckle intensities is proved to be effective for the improvement in sensitivity of the method.
引用
收藏
页码：17 / 21
页数：5
相关论文
共 50 条
  • [41] REAL-TIME DETECTION OF METALLIC OBJECTS USING LIQUID-CRYSTAL MICROWAVE HOLOGRAMS
    KOCK, WE
    PROCEEDINGS OF THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, 1972, 60 (09): : 1105 - &
  • [42] Real-time liquid-crystal atmosphere turbulence simulator with graphic processing unit
    Hu, Lifa
    Xuan, Li
    Li, Dayu
    Cao, Zhaoliang
    Mu, Quanquan
    Liu, Yonggang
    Peng, Zenghui
    Lu, Xinhai
    OPTICS EXPRESS, 2009, 17 (09): : 7259 - 7268
  • [43] REAL-TIME OPTICAL-PROCESSING USING THE LIQUID-CRYSTAL LIGHT VALVE
    SMITH, JL
    GUENTHER, BD
    CHRISTENSEN, CR
    JOURNAL OF APPLIED PHOTOGRAPHIC ENGINEERING, 1979, 5 (04): : 236 - 243
  • [44] HREM ALIGNMENT AIDED BY A REAL-TIME DIFFRACTOMETER USING A LIQUID-CRYSTAL PANEL
    ISHIZUKA, K
    CHEN, J
    ULTRAMICROSCOPY, 1995, 60 (01) : 25 - 31
  • [45] Real-time holographic vibrometry with a ferroelectric liquid-crystal spatial light modulator
    Sano, M
    Takeda, M
    Fukushima, S
    Kurokawa, T
    APPLIED OPTICS, 1998, 37 (32): : 7523 - 7531
  • [46] Real-time object detection applied on drones
    Wei, Jingjing
    Zhao, Yiding
    International Agricultural Engineering Journal, 2019, 28 (04): : 450 - 459
  • [47] PERFORMANCE OF REAL-TIME ASSOCIATIVE MEMORY USING A PHOTOREFRACTIVE CRYSTAL AND LIQUID-CRYSTAL ELECTROOPTIC SWITCHES
    XU, HY
    YANG, Y
    YU, YL
    XU, KB
    XU, YH
    APPLIED OPTICS, 1990, 29 (23): : 3375 - 3379
  • [48] A new method of real-time measurement of displacement and vibration for engineering structures
    Feng, JS
    Cao, ZY
    AUTOMATED OPTICAL INSPECTION FOR INDUSTRY, 1996, 2899 : 157 - 161
  • [49] REAL-TIME COMPUTER-AIDED MULTIPLEXED OPTICAL-INTENSITY CORRELATOR USING FRESNEL HOLOGRAPHIC FILTERS AND A LIQUID-CRYSTAL TELEVISION
    WANG, ZQ
    GILLESPIE, WA
    CARTWRIGHT, CM
    SOUTAR, C
    OPTICS COMMUNICATIONS, 1991, 86 (01) : 19 - 24
  • [50] REAL-TIME BINARY PHASE-ONLY CIRCULAR HARMONIC FILTERS USING A LIQUID-CRYSTAL TELEVISION IN THE FOURIER PLANE OF AN OPTICAL CORRELATOR
    DROLET, JJP
    LECLERC, L
    SHENG, YL
    ARSENAULT, HH
    OPTICAL ENGINEERING, 1992, 31 (05) : 939 - 946
12345