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Proceedings Paper

Single exposure lensless subpixel phase imaging
Author(s): Péter Kocsis; Igor Shevkunov; Vladimir Katkovnik; Karen Egiazarian
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Paper 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.

Paper Details

Date Published: 21 June 2019
PDF: 9 pages
Proc. SPIE 11062, Digital Optical Technologies 2019, 1106212 (21 June 2019); doi: 10.1117/12.2525679
Show Author Affiliations
Péter Kocsis, Tampere Univ. (Finland)
Igor Shevkunov, Tampere Univ. (Finland)
Vladimir Katkovnik, Tampere Univ. (Finland)
Karen Egiazarian, Tampere Univ. (Finland)

Published in SPIE Proceedings Vol. 11062:
Digital Optical Technologies 2019
Bernard C. Kress; Peter Schelkens, Editor(s)

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