Strategies for reducing speckle noise in digital holography
Vittorio Bianco,Pasquale Memmolo,Marco Leo,Silvio Montresor,Cosimo Distante,Melania Paturzo,Pascal Picart,Bahram Javidi,Pietro Ferraro +8 more
TLDR
A broad discussion about the noise issue in DH is provided, with the aim of covering the best-performing noise reduction approaches that have been proposed so far and quantitative comparisons among these approaches will be presented.Abstract:
Digital holography (DH) has emerged as one of the most effective coherent imaging technologies. The technological developments of digital sensors and optical elements have made DH the primary approach in several research fields, from quantitative phase imaging to optical metrology and 3D display technologies, to name a few. Like many other digital imaging techniques, DH must cope with the issue of speckle artifacts, due to the coherent nature of the required light sources. Despite the complexity of the recently proposed de-speckling methods, many have not yet attained the required level of effectiveness. That is, a universal denoising strategy for completely suppressing holographic noise has not yet been established. Thus the removal of speckle noise from holographic images represents a bottleneck for the entire optics and photonics scientific community. This review article provides a broad discussion about the noise issue in DH, with the aim of covering the best-performing noise reduction approaches that have been proposed so far. Quantitative comparisons among these approaches will be presented.read more
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Book
Digital holography and digital image processing : principles, methods, algorithms
TL;DR: Methods and Algorithms of Digital Filtering of Signal/Image Processing and Computer Generated Holograms.
Journal ArticleDOI
Learned hardware-in-the-loop phase retrieval for holographic near-eye displays
TL;DR: The proposed hardware-in-the-loop approach is robust to spatial, temporal and hardware deviations, and improves the image quality of existing methods qualitatively and quantitatively in SNR and perceptual quality.
Journal ArticleDOI
Motility-based label-free detection of parasites in bodily fluids using holographic speckle analysis and deep learning.
Yibo Zhang,Hatice Ceylan Koydemir,Michelle M. Shimogawa,Sener Yalcin,Alexander Guziak,Tairan Liu,Ilker Oguz,Yujia Huang,Bijie Bai,Yilin Luo,Yi Luo,Zhensong Wei,Hongda Wang,Vittorio Bianco,Bohan Zhang,Rohan Nadkarni,Kent L. Hill,Aydogan Ozcan +17 more
TL;DR: A motility-based label-free computational imaging platform to rapidly detect motile parasites in optically dense bodily fluids by utilizing the locomotion of the parasites as a specific biomarker and endogenous contrast mechanism, providing a more sensitive technique for diagnosing diseases, without the need for chemical labeling.
Journal ArticleDOI
Label-Free Tomographic Imaging of Lipid Droplets in Foam Cells for Machine-Learning-Assisted Therapeutic Evaluation of Targeted Nanodrugs.
Sangwoo Park,Jae Won Ahn,YoungJu Jo,Ha Young Kang,Hyun Jung Kim,Yeongmi Cheon,Jin Won Kim,YongKeun Park,Seongsoo Lee,Kyeongsoon Park +9 more
TL;DR: It is suggested that refractive index measurement is a promising tool to explore new drugs against LD-related metabolic diseases.
Journal ArticleDOI
Observing distant objects with a multimode fibre-based holographic endoscope
TL;DR: This work introduces an alternative 'farfield' endoscope, capable of imaging macroscopic objects across a large depth of field, and paves the way towards the exploitation of minimally-invasive holographic micro-endoscopes in clinical and diagnostics applications.
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