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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 7 — Jul. 16, 2007

Mixed transfer function and transport of intensity approach for phase retrieval in the Fresnel region

Jean Pierre Guigay, Max Langer, Renaud Boistel, and Peter Cloetens  »View Author Affiliations


Optics Letters, Vol. 32, Issue 12, pp. 1617-1619 (2007)
http://dx.doi.org/10.1364/OL.32.001617


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Abstract

We present a method for phase retrieval in propagation-based x-ray imaging, based on the contrast transfer and transport of intensity equation approaches. We show that the contrast transfer model does not coincide with the transport of intensity in the limit of small propagation distances, and we derive a new model that alleviates this problem. Using this model, we devise an algorithm to retrieve the phase from slowly varying samples that is valid beyond the limit of small distances. We show its utility by imaging in three dimensions a biological sample that causes both strong absorption and phase shift.

© 2007 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(100.5070) Image processing : Phase retrieval
(110.0180) Imaging systems : Microscopy
(110.7440) Imaging systems : X-ray imaging
(180.0180) Microscopy : Microscopy

ToC Category:
Imaging Systems

History
Original Manuscript: February 21, 2007
Manuscript Accepted: March 26, 2007
Published: June 5, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Jean Pierre Guigay, Max Langer, Renaud Boistel, and Peter Cloetens, "Mixed transfer function and transport of intensity approach for phase retrieval in the Fresnel region," Opt. Lett. 32, 1617-1619 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-32-12-1617

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