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Park, Jung-Hoon
Bio-Optics Lab
Research Interests
  • Biomedical optics, wavefront shaping, In-vivo deep tissue imaging

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Fast diffraction-limited image recovery through turbulence via subsampled bispectrum analysis

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Title
Fast diffraction-limited image recovery through turbulence via subsampled bispectrum analysis
Author
Hwang, ByungjaeWoo, TaeseongPark, Jung-Hoon
Issue Date
2019-12
Publisher
Optical Society of America
Citation
OPTICS LETTERS, v.44, no.24, pp.5985
Abstract
Imaging through temporally changing aberrations is a common challenge that can be found in many different fields such as astronomy, long-range surveillance, and deep tissue bioimaging. Based on the notions originally developed in speckle interferometry, time-varying aberrations can be used to our advantage to obtain diffraction-limited resolution images through turbulence via bispectrum analysis. However, due to the heavy computational load brought on by the triple correlation and the phase extraction process, widespread use has been limited. Here, we demonstrate a Fourier domain subsampling scheme that can accelerate the speed of bispectrum analysis by more than 2 orders of magnitude. In contrast to other approaches for parallelization such as those based on Radon transform or image segmentation, our proposed method enables diffraction-limited imaging without suffering from resolution loss or image artifacts.
URI
https://scholarworks.unist.ac.kr/handle/201301/30598
URL
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-44-24-5985
DOI
10.1364/ol.44.005985
ISSN
0146-9592
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