Single exposure lensless subpixel phase imaging

Péter Kocsis; Igor Shevkunov; Vladimir Katkovnik; Karen Egiazarian

doi:10.1117/12.2525679

21 June 2019 Single exposure lensless subpixel phase imaging

Péter Kocsis, Igor Shevkunov, Vladimir Katkovnik, Karen Egiazarian

Proceedings Volume 11062, Digital Optical Technologies 2019; 1106212 (2019) https://doi.org/10.1117/12.2525679
Event: SPIE Digital Optical Technologies, 2019, Munich, Germany

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.2525679

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