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21 June 2019 Single exposure lensless subpixel phase imaging
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Proceedings Volume 11062, Digital Optical Technologies 2019; 1106212 (2019)
Event: SPIE Digital Optical Technologies, 2019, Munich, Germany
Lensless phase-retrieval system with phase modulation of free propagation wavefront is proposed. Contrary to the traditional super-resolution phase-retrieval, the method in this paper requires a single observation only and uses advanced SR-SPAR iterative technique. Successful object imaging relies on modulation of the object wavefront with a random phase-mask, which generates enlarged intensity patterns, allowing us to extract more information than it is possible without such a mask. The achieved high-quality super-resolution phase-imaging is demonstrated by simulation-tests produced with the parameters corresponding to the physical prototype of the considered optical system.
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Péter Kocsis, Igor Shevkunov, Vladimir Katkovnik, and Karen Egiazarian "Single exposure lensless subpixel phase imaging", Proc. SPIE 11062, Digital Optical Technologies 2019, 1106212 (21 June 2019);

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