Subsampled phase retrieval for temporal resolution enhancement in lensless on-chip holographic video
Posted on 2017-04-26 - 17:47
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.
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Ryu, Donghun; Wang, Zihao; He, Kuan; Zheng, Guoan; Horstmeyer, Roarke; Cossairt, Oliver (2017). Subsampled phase retrieval for temporal resolution enhancement in lensless on-chip holographic video. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3753557.v1
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AUTHORS (6)
DR
Donghun Ryu
ZW
Zihao Wang
KH
Kuan He
GZ
Guoan Zheng
RH
Roarke Horstmeyer
OC
Oliver Cossairt
KEYWORDS
per-frame pixel countreadout ratespatial-temporal trade-offPeranema microorganismson-chip holographic video setupsensor frame ratephase retrieval approachesreconstruction qualitysubsampled phase retrievalSubsampled phase retrievalresolution enhancementpixel measurementsvivo movementframe rate5.5 increaselensless on-chip holographic video On-chip holographic videoholographic videopixel sub-samplingSPR algorithmdetector arrays