Subsampled phase retrieval for temporal resolution enhancement in lensless on-chip holographic video

Donghun Ryu, Zihao Wang, Kuan He, Guoan Zheng, Roarke Horstmeyer, Oliver Cossairt

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

On-chip holographic video is a convenient way to monitor biological samples simultaneously at high spatial resolution and over a wide field-of-view. However, due to the limited readout rate of digital detector arrays, one often faces a tradeoff between the per-frame pixel count and frame rate of the captured video. In this report, we propose a subsampled phase retrieval (SPR) algorithm to overcome the spatial-temporal trade-off in holographic video. Compared to traditional phase retrieval approaches, our SPR algorithm uses over an order of magnitude less pixel measurements while maintaining suitable reconstruction quality. We use an on-chip holographic video setup with pixel sub-sampling to experimentally demonstrate a factor of 5.5 increase in sensor frame rate while monitoring the in vivo movement of Peranema microorganisms.

Original languageEnglish (US)
Article number#282773
Pages (from-to)1981-1995
Number of pages15
JournalBiomedical Optics Express
Volume8
Issue number3
DOIs
StatePublished - Mar 1 2017

Keywords

  • Computational imaging
  • Holography
  • Phase retrieval

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

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