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  4. HILBERT TRANSFORM RELATIONS IN FREQUENCY-DOMAIN OPTICAL-COHERENCE TOMOGRAPHIC IMAGING
 
research article

HILBERT TRANSFORM RELATIONS IN FREQUENCY-DOMAIN OPTICAL-COHERENCE TOMOGRAPHIC IMAGING

Seelamantula, Chandra Sekhar
•
Lasser, Theo  
2013
Journal of the Indian Institute of Science

Interferometric imaging techniques typically embed the object phase information in the magnitude during the measurement process. During reconstruction, the phase is recovered from the magnitude by certain approximations on the measured magnitude and underlying phase. In this paper, we review some of our recent contributions on exact recovery of phase from Fourier transform magnitude measurements. We show that, under certain conditions, which are easily ensured during acquisition, the phase can be reconstructed accurately from the magnitude. More specifi cally, we show that there exist Hilbert transform relations between the logarithm of the magnitude and the phase. The new set of results constitute a generalization of the minimum-phase property to a larger class of signals than previously known in the literature. The key results are generic and are applicable to one-dimensional as well as two-dimensional signals. We fi rst present the results in a generic fashion. The theoretical claims are validated using the specifi c example of frequency-domain optical-coherence tomographic imaging.

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Type
research article
Author(s)
Seelamantula, Chandra Sekhar
Lasser, Theo  
Date Issued

2013

Published in
Journal of the Indian Institute of Science
Volume

93

Issue

1

Start page

139

End page

148

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

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Available on Infoscience
November 6, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/120464
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