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Proceedings Paper

New developments in transport of intensity equation for phase retrieval and computational imaging
Author(s): Anand Asundi; Chao Zuo
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Paper Abstract

The commonly known transport of intensity equation (TIE) was proposed by Teague as a method for the deterministic optical phase-retrieval problem. The aim is to deduce optical phase from only intensity measurements using non-interferometric techniques. Compared to many other phase retrieval algorithms, TIE is non-iterative, purely computational and no complicated auxiliary device needs to be introduced. In this paper, we introduce some recent developments in TIE phase retrieval and microscopy: including its fast numerical solution, treatment of boundary problem and the low-frequency artifacts, and two configurations for dynamic phase imaging. We also reexamine TIE in terms of phase-space optics, demonstrating the effect of partially coherent illumination on phase reconstruction, and connecting it to light field imaging at the geometry optics limit.

Paper Details

Date Published: 2 June 2014
PDF: 7 pages
Proc. SPIE 9234, International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics, 92340O (2 June 2014); doi: 10.1117/12.2054325
Show Author Affiliations
Anand Asundi, Nanyang Technological Univ. (Singapore)
Chao Zuo, Nanyang Technological Univ. (Singapore)
Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9234:
International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics
Somnuk Sirisoonthorn, Editor(s)

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