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
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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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Three-Dimensional Imaging and ProcessingUsing Computational Holographic Imaging
TL;DR: Digital holography is a technique that permits digital capture of holograms and subsequent processing on a digital computer as mentioned in this paper, and various applications of this technique cover three-dimensional (3-D) imaging as well as several problems.
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Deep learning in holography and coherent imaging.
TL;DR: In a discussion of the topic, Yair Rivenson, Yichen Wu, and Aydogan Ozcan explain how once “trained” with appropriate datasets, neural networks can learn to reconstruct images with added benefits such as improved phase recovery and extended depth of field as well as enhanced spatial resolution and superior signal-to-noise ratio.
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Deep learning in optical metrology: a review
Chao Zuo,Jiaming Qian,Shijie Feng,Wei Yin,Yixuan Li,Pengfei Fan,Jing Han,Kemao Qian,Qian Chen +8 more
TL;DR: Deep learning-enabled optical metrology is a kind of data-driven approach, which has already provided numerous alternative solutions to many challenging problems in this field with better performances as discussed by the authors .
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Deep learning in optical metrology: a review
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TL;DR: Deep learning-enabled optical metrology is a kind of data-driven approach, which has already provided numerous alternative solutions to many challenging problems in this field with better performances as discussed by the authors .
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Imaging blood cells through scattering biological tissue using speckle scanning microscopy
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References
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Digital Holography at Shot Noise Level
TL;DR: In this paper, the theoretical shot noise limit was studied and it was shown that it corresponds to 1 photo-electron per pixel within the whole frame sequence that is used to reconstruct the holographic image.
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Comparative analysis on some filters for wrapped phase maps.
TL;DR: The analysis shows that principles of the RPT, MPLS, WFR, and ACF are equivalent and the SCAF also leads to the WFR by some extension, which elegantly unifies all these methods for filtering unwrapped phase maps.
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Quantization noise and its reduction in lensless Fourier digital holography
Nitesh Pandey,Bryan M. Hennelly +1 more
TL;DR: It is shown that high-quality images can be obtained from binary holograms when speckle reduction is performed, and it is shown how the resultant noise in the reconstructed image, as well as theSpeckle that is inherent in digital holography, can be conveniently suppressed by standard speckles reduction techniques.
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Clear coherent imaging in turbid microfluidics by multiple holographic acquisitions
Vittorio Bianco,Melania Paturzo,Andrea Finizio,Donatella Balduzzi,Roberto Puglisi,Andrea Galli,Pietro Ferraro +6 more
TL;DR: This Letter exploits the Brownian motion of the colloidal particles to get multiple uncorrelated holograms, and combines them to reduce the speckle contrast, to get a multi-look gain without losing image resolution.
Book
Biomedical optical phase microscopy and nanoscopy
TL;DR: In this article, the authors provide a comprehensive overview of the principles and techniques of optical phase microscopy and nanoscopy with biomedical applications, including tips/advice on building systems and working with advanced imaging biomedical techniques, including interpretation of phase images.