Optical Haar wavelet transforms with liquid crystal elements

被引：9
|
作者：
He, Z [1 ]
Honma, M [1 ]
Masuda, S [1 ]
Nose, T [1 ]
Sato, S [1 ]
机构：
[1] ADVANTEST LABS LTD, AOBA KU, SENDAI 98931, MIYAGI, JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1995年 / 34卷 / 12A期
关键词：
optical Haar wavelet; patterned-electrode liquid crystal cell; optical wavelet transform; liquid crystal microlens array; shadow-casting system;
D O I：
10.1143/JJAP.34.6433
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Optical Haar wavelet transforms are achieved with liquid crystal (LC) elements: patterned-electrode liquid crystal cells serve as generators of optical Haar wavelets, and LC microlens arrays are used in the fabrication of shadow-casting systems. The phase modulation characteristics of the patterned electrode LC cells are investigated by applying a voltage, and the 1-dimension, 2-dimension rectangular and circular Haar wavelets are obtained by adjusting the voltage applied to the LC cells. A. shadow-casting system composed of a LC microlens array is proposed. Due to the variability of the focal length of the LC microlens, good optical wavelet transforms can be achieved readily.
引用
收藏
页码：6433 / 6438
页数：6
相关论文
共 50 条
  • [1] Optical Haar wavelet transforms with liquid crystal elements
    He, Zhan
    Honma, Michinori
    Masuda, Shin
    Nose, Toshiaki
    Sato, Susumu
    [J]. Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes & Review Papers, 1995, 34 (12 A): : 6433 - 6438
  • [2] Optical properties of liquid crystal polarization converting devices and their application to optical wavelet transforms
    Honma, M
    Nose, T
    Sato, S
    [J]. LIQUID CRYSTALS III, 1999, 3800 : 182 - 189
  • [3] Super-Haar designs of wavelet transforms
    Szu, H
    Garcia, J
    Telfer, B
    Raghuveer, M
    [J]. WAVELET APPLICATIONS III, 1996, 2762 : 152 - 164
  • [4] Fast classical and quantum fractional Haar Wavelet transforms
    Labunets, V
    Labunets-Rundblad, E
    Astola, J
    [J]. ISPA 2001: PROCEEDINGS OF THE 2ND INTERNATIONAL SYMPOSIUM ON IMAGE AND SIGNAL PROCESSING AND ANALYSIS, 2001, : 564 - 569
  • [5] OPTICAL HAAR WAVELET TRANSFORM
    BURNS, TJ
    FIELDING, KH
    ROGERS, SK
    PINSKI, SD
    RUCK, DW
    [J]. OPTICAL ENGINEERING, 1992, 31 (09) : 1852 - 1858
  • [6] Feature extraction properties in optical wavelet transforms using liquid crystal polarization-converting devices
    Honma, M
    Nose, T
    Sato, S
    [J]. EIGHTH INTERNATIONAL CONFERENCE ON NONLINEAR OPTICS OF LIQUID AND PHOTOREFRACTIVE CRYSTALS, 2001, 4418 : 129 - 140
  • [7] On the implementation of nonseparable two-dimensional Haar wavelet transforms
    Lenders, P
    Sjöström, A
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1999, 47 (11) : 3137 - 3139
  • [8] An optical method for production of Haar wavelet
    Wang, YZ
    Ma, L
    Shi, SX
    [J]. OPTICS COMMUNICATIONS, 2002, 204 (1-6) : 107 - 110
  • [9] Liquid crystal polarization-converting devices for edge and corner extractions of images using optical wavelet transforms
    Honma, M
    Nose, T
    Sato, S
    [J]. APPLIED OPTICS, 2006, 45 (13) : 3083 - 3090
  • [10] Combining Haar Wavelet and Karhunen Loeve Transforms for Medical Images Watermarking
    Hajjaji, Mohamed Ali
    Bourennane, El-Bay
    Abdelali, Abdessalem Ben
    Mtibaa, Abdellatif
    [J]. BIOMED RESEARCH INTERNATIONAL, 2014, 2014
12345