The influence of hologram aperture on speckle noise in the reconstructed image of digital holography and its reduction

被引:22
作者
Cai, Xiao-Ou [1 ]
Wang, Hui [2 ]
机构
[1] Zhejiang Shuren Univ, Dept Basic Sci, Hangzhou 310015, Peoples R China
[2] Zhejiang Normal Univ, Inst Informat Opt, Jinhua 321004, Peoples R China
关键词
digital holography; hologram aperture; speckle noise; deconvolution process;
D O I
10.1016/j.optcom.2007.09.030
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Based on the whole process of the recording and reconstruction of digital holography, we study the formation cause of speckle noise in its reconstructed image and acquire the conclusion that the small size of hologram aperture diffraction aggravates the speckle noise of reconstructed image and the speckle noise has been one of primary noise sources in the reconstruction process. In order to reduce the speckle noise resulting from little hologram aperture diffraction, we set an appropriate aperture function matching the recording parameter and aperture size of hologram and deconvolve the reconstructed image with it. The validity has been proved in theory and experiment. Therefore, it offers a brand-new thought and practical way to reduce the speckle noise in the reconstructed image of digital holography. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:232 / 237
页数:6
相关论文
共 9 条
[1]   Digital in-line holographic microscopy [J].
Garcia-Sucerquia, J ;
Xu, WB ;
Jericho, SK ;
Klages, P ;
Jericho, MH ;
Kreuzer, HJ .
APPLIED OPTICS, 2006, 45 (05) :836-850
[2]   Reduction of speckle noise in digital holography by using digital image processing [J].
Garcia-Sucerquia, J ;
Ramírez, JAH ;
Prieto, DV .
OPTIK, 2005, 116 (01) :44-48
[3]   EFFECTS OF SPECKLE ON RESOLUTION [J].
KOZMA, A ;
CHRISTENSEN, CR .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1976, 66 (11) :1257-1260
[4]   Fresnelets: New multiresolution wavelet bases for digital holography [J].
Liebling, M ;
Blu, T ;
Unser, M .
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2003, 12 (01) :29-43
[5]   Compression of encrypted three-dimensional objects using digital holography [J].
Naughton, TJ ;
Javidi, B .
OPTICAL ENGINEERING, 2004, 43 (10) :2233-2238
[6]   Holographic video computation and display using Holo-Chidi [J].
Nwodoh, TA ;
Benton, SA .
JOURNAL OF ELECTRONIC IMAGING, 2003, 12 (03) :551-557
[7]   Digital recording and numerical reconstruction of holograms: Reduction of the spatial frequency spectrum [J].
Schnars, U ;
Kreis, TM ;
Juptner, WPO .
OPTICAL ENGINEERING, 1996, 35 (04) :977-982
[8]  
Schnars U., 2005, DIGITAL HOLOGRAPHY D
[9]   Elimination of zero-order diffraction in digital off-axis holography [J].
Zhang, YM ;
Lü, QN ;
Ge, BZ .
OPTICS COMMUNICATIONS, 2004, 240 (4-6) :261-267