Suppression of zero-order image in off-axis digital holography based on homomorphic filtering

2012 ◽  
Vol 20 (9) ◽  
pp. 1877-1882
Author(s):  
杨勇 YANG Yong ◽  
薛东旭 XUE Dong-xu ◽  
盖琦 GE Qi ◽  
吴永丽 WU Yong-li ◽  
马忠洪 MA Zhong-hong
Keyword(s):  
Digital Holography ◽  
Zero Order ◽  
Homomorphic Filtering ◽  
Order Image

scholarly journals Numerical suppression of zero-order image in digital holography

2007 ◽  
Vol 15 (14) ◽  
pp. 8851 ◽  
Author(s):  
Gu-Liang Chen ◽  
Ching-Yang Lin ◽  
Ming-Kuei Kuo ◽  
Chi-Ching Chang
Keyword(s):  
Digital Holography ◽  
Zero Order ◽  
Order Image

A Method for Eliminating Zero-Order Image in Digital Holograph Based on Contourlet Transform

2013 ◽  
Vol 760-762 ◽  
pp. 80-83
Author(s):  
Yu Fei Zhang ◽  
Yi Quan Wu
Keyword(s):  
Digital Holography ◽  
Low Frequency ◽  
Zero Order ◽  
Contourlet Transform ◽  
Image Method ◽  
Real Image ◽  
Reconstruction Process ◽  
Frequency Domain Filtering ◽  
Order Image

In the reconstruction process of digital holograph, zero-order image has a bad impact on the quality of real image. In this paper, a new way to eliminate zero-order image in digital holography is proposed. Firstly, digital holography image is decomposed by contourlet transform, then remove the low frequency. The new digital holography image is obtained by inverse contourlet transform. Experiments show that, compared with spatial filtering, frequency domain filtering, laplacian filtering and eliminate zero-order image method based on wavelet, the new method proposed in this paper can eliminate zero-order image better, whats more, the real image is also strengthened in some way.

scholarly journals Iterative method for zero-order suppression in off-axis digital holography

2010 ◽  
Vol 18 (15) ◽  
pp. 15318 ◽  
Author(s):  
Nicolas Pavillon ◽  
Cristian Arfire ◽  
Isabelle Bergoënd ◽  
Christian Depeursinge
Keyword(s):  
Iterative Method ◽  
Digital Holography ◽  
Zero Order

Iterative approach for zero-order term elimination in off-axis multiplex digital holography

2017 ◽  
Vol 383 ◽  
pp. 513-517 ◽  
Author(s):  
Dongliang Zhao ◽  
Dongzhuo Xie ◽  
Yong Yang ◽  
Hongchen Zhai
Keyword(s):  
Digital Holography ◽  
Order Term ◽  
Zero Order ◽  
Iterative Approach

Effect of Phase-Shifting Error on Deformation Evaluation Using Phase-Shifting Digital Holography

2006 ◽  
Vol 326-328 ◽  
pp. 27-30
Author(s):  
Xin Kang ◽  
Xiao Yuan He ◽  
Cho Jui Tay ◽  
C. Quan
Keyword(s):  
Computer Simulation ◽  
Digital Holography ◽  
Zero Order ◽  
Phase Shifting ◽  
Phase Shifting Technique ◽  
Order Diffraction

Phase-shifting technique is an effect way to suppress the zero order diffraction and the conjugate term in digital holography. However the phase-shifting error will influence inevitably the evaluation precision in practice operation. In this paper, the deformation evaluation errors by means of two kinds of four-step phase-shifting algorithms, which are in common use in digital holography, are analyzed and compared by computer simulation. In addition, the phase-shifting errors may cumulate or not according to different phase-shifting techniques, and both cases are considered in this paper. The results based on the digital in-line holography show that the two four-step phase-shifting algorithms possess different sensitivity to the phase-shifting errors, and the preferable one, which is more immune to the phase-shifting errors, is educed in conclusion.

scholarly journals The study of color digital holography free from the zero-order diffraction interruption

2011 ◽  
Vol 60 (3) ◽  
pp. 034204
Author(s):  
Fan Ze-Bin ◽  
Song Qing-He ◽  
Li Jun-Chang ◽  
Tankam Patrice ◽  
Picart Pascal
Keyword(s):  
Digital Holography ◽  
Zero Order ◽  
Order Diffraction
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