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research article

Non-Linear Fresnelet Approximation for Interference Term Suppression in Digital Holography

Liebling, M.  
•
Blu, T.  
•
Unser, M.  
2003
Proceedings of the SPIE Conference on Mathematical Imaging: Wavelet Applications in Signal and Image Processing X

We present a zero-order and twin image elimination algorithm for digital Fresnel holograms that were acquired in an off-axis geometry. These interference terms arise when the digital hologram is reconstructed and corrupt the result. Our algorithm is based on the Fresnelet transform, a wavelet-like transform that uses basis functions tailor-made for digital holography. We show that in the Fresnelet domain, the coefficients associated to the interference terms are separated both spatially and with respect to the frequency bands. We propose a method to suppress them by selectively thresholding the Fresnelet coefficients. Unlike other methods that operate in the Fourier domain and affect the whole spacial domain, our method operates locally in both space and frequency, allowing for a more targeted processing.

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Type
research article
DOI
10.1117/12.505786
Author(s)
Liebling, M.  
Blu, T.  
Unser, M.  
Date Issued

2003

Publisher

SPIE

Published in
Proceedings of the SPIE Conference on Mathematical Imaging: Wavelet Applications in Signal and Image Processing X
Issue

San Diego CA, USA

Start page

553

End page

559

URL

URL

http://bigwww.epfl.ch/publications/liebling0304.html

URL

http://bigwww.epfl.ch/publications/liebling0304.pdf

URL

http://bigwww.epfl.ch/publications/liebling0304.ps
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LIB  
Available on Infoscience
September 18, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/118054
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