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J Opt Soc Am A Opt Image Sci Vis. 2012 Apr 1;29(4):585-92. doi: 10.1364/JOSAA.29.000585.

Focal-plane detection and object reconstruction in the noninterferometric phase imaging.

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1
Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore. 2elechenw@nus.edu.sg

Abstract

In this paper, we propose effective methods to detect focal planes and recover objects in the noninterferometric phase imaging. A strategy using different aberration coefficients is developed, and a series of diffraction intensity maps is sequentially recorded by a charge-coupled device. During numerical reconstruction, a phase retrieval algorithm is applied to extract object wavefront from diffraction intensity maps. Subsequently, numerical methods are proposed to detect focal planes, and high-quality phase maps are recovered by using the detected focal distances. Theoretical results are presented to demonstrate feasibility and effectiveness of the proposed methods.

PMID:
22472838
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