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| 1 | Strategies for reducing speckle noise in digital holography显示文摘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. | Vittorio Bianco Pasquale Memmolo Marco Leo Silvio Montresor Cosimo Distante Melania Paturzo Pascal Picart Bahram Javidi Pietro Ferraro | 2018 | Light(Science & Applications)2018，7，1： | 8 |
| 2 | Endowing a plain fluidic chip with micro-optics: a holographic microscope slide显示文摘Lab-on-a-Chip(LoC)devices are extremely promising in that they enable diagnostic functions at the point-of-care.Within this scope,an important goal is to design imaging schemes that can be used out of the laboratory.In this paper,we introduce and test a pocket holographic slide that allows digital holography microscopy to be performed without an interferometer setup.Instead,a commercial off-the-shelf plastic chip is engineered and functionalized with this aim.The microfluidic chip is endowed with micro-optics,that is,a diffraction grating and polymeric lenses,to build an interferometer directly on the chip,avoiding the need for a reference arm and external bulky optical components.Thanks to the single-beam scheme,the system is completely integrated and robust against vibrations,sharing the useful features of any common path interferometer.Hence,it becomes possible to bring holographic functionalities out of the lab,moving complexity from the external optical apparatus to the chip itself.Label-free imaging and quantitative phase contrast mapping of live samples are demonstrated,along with flexible refocusing capabilities.Thus,a liquid volume can be analyzed in one single shot with no need for mechanical scanning systems. | Vittorio Bianco Biagio Mandracchia Valentina Marchesano Vito Pagliarulo Federico Olivieri Sara Coppola Melania Paturzo Pietro Ferraro | 2017 | Light(Science & Applications)2017，6，1： | 6 |
| 3 | Performance Analysis of a 3KW Grid-connected Photovoltaic Plant 显示文摘 | Mario Cucumo Alessandro De Rosa Vittorio Ferraro etal | 2006 | Renewable Energy2006，，： | 1 |
| 4 | Dehydration of plant cells shoves nuclei rotation allowing for 3D phase-contrast tomography显示文摘Single-cell phase-contrast tomography promises to become decisive for studying 3D intracellular structures in biology.It involves probing cells with light at wide angles,which unfortunately requires complex systems.Here we show an intriguing concept based on an inherent natural process for plants biology,i.e.,dehydration,allowing us to easily obtain 3D-tomography of onion-epidermal cells’nuclei.In fact,the loss of water reduces the turgor pressure and we recognize it induces significant rotation of cells’nuclei.Thanks to the holographic focusing flexibility and an ad-hoc angles’tracking algorithm,we combine different phase-contrast views of the nuclei to retrieve their 3D refractive index distribution.Nucleolus identification capability and a strategy for measuring morphology,dry mass,biovolume,and refractive index statistics are reported and discussed.This new concept could revolutionize the investigation in plant biology by enabling dynamic 3D quantitative and label-free analysis at sub-nuclear level using a conventional holographic setup. | Zhe Wang Vittorio Bianco Daniele Pirone Pasquale Memmolo Massimiliano Maria Villone Pier Luca Maffettone Pietro Ferraro | 2021 | Light(Science & Applications)2021，10，10： | 1 |
| 5 | Tumor response assessment by modified Choi criteria in localized high‐risk soft tissue sarcoma treated with chemotherapy显示文摘 | Silvia Stacchiotti Paolo Verderio Antonella Messina Carlo Morosi Paola Collini Antonio Llombart‐Bosch Javier Martin Alessandro Comandone Jurado Cruz Andrea Ferraro Giovanni Grignani Sara Pizzamiglio Vittorio Quagliuolo Piero Picci Sergio Frustaci Angelo P | 2012 | Cancer2012，，23： | 1 |
| 6 | A method for selecting the CIE standard general sky model with regard to calculating luminance distributions显示文摘 | Vittorio Ferraro Valerio Marinelli Marilena Mele | 2013 | Journal of Atmospheric and Solar-Terrestrial Physics2013，，： | 1 |
| 7 | Performance analysis of a 3kW grid-connected photovoltaic plant显示文摘 | Mario Cucumo Alessandro De Rosa Vittorio Ferraro Dimitrios Kaliakatsos Valerio Marinelli | 2006 | Renewable Energy2006，，31： | 1 |
| 8 | Quasi noise-free digital holography显示文摘One of the main drawbacks of Digital Holography(DH)is the coherent nature of the light source,which severely corrupts the quality of holographic reconstructions.Although numerous techniques to reduce noise in DH have provided good results,holographic noise suppression remains a challenging task.We propose a novel framework that combines the concepts of encoding multiple uncorrelated digital holograms,block grouping and collaborative filtering to achieve quasi noise-free DH reconstructions.The optimized joint action of these different image-denoising methods permits the removal of up to 98%of the noise while preserving the image contrast.The resulting quality of the hologram reconstructions is comparable to the quality achievable with non-coherent techniques and far beyond the current state of art in DH.Experimental validation is provided for both singlewavelength and multi-wavelength DH,and a comparison with the most used holographic denoising methods is performed. | Vittorio Bianco Pasquale Memmolo Melania Paturzo Andrea Finizio Bahram Javidi Pietro Ferraro | 2016 | Light(Science & Applications)2016，5，1： | 1 |
| 9 | A method for selecting the CIE standard general sky model 显示文摘 | Vittorio Ferraro Valerio Marinelli Marilena Mele | 2013 | Journal of Atmospheric and Solar-Terrestrial Physics2013，9596，： | 1 |
| 10 | Sky luminance measurements and comparisons with calculation models显示文摘 | Vittorio Ferraro Marilena Mele Valerio Marinelli | 2011 | Journal of Atmospheric and Solar-Terrestrial Physics2011，73，13： | 1 |
| 11 | Digital holography as metrology tool at micronanoscale for soft matter显示文摘The appearance of the first laser approximately 12 years after the invention of holography by Gabor(1948)revolutionized the field of optical metrology.In fact,the invention of holographic interferometry enabled the exploitation of interferometry on non-mirror surfaces and full-scale objects.The holography-based measurement methods has been implemented to several industrial systems or in support of R&D with the aim of improving new products in many fields(automotive,aerospace,electronics,etc.).To date,holography has been considered an important measurement tool for non-destructive inspection(NDI),strain-stress measurement,and vibration analysis at various engineering sites.Recently,the new paradigm of Industry4.0 has seen the introduction of new technologies and methods of processing materials as well as the development of manufacturing approaches for the realization of innovative products.For example,direct printing,additive,and bottom-up manufacturing processes are expected to involve new ways of making products in future,and most innovative fabrication processes will be based on the manipulation of soft matter(e.g.,starting from the liquid phase)that will be shaped at the nanoscale.The inherent characteristics of digital holography(DH)make it a powerful and accurate tool for the visualization and testing of final products,as well as for in situ and real-time monitoring and quantitative characterization of the processes involved during the fabrication cycle.This review aims to report on the most useful applications of soft matter,where the capabilities offered by DH,such as three-dimensional(3D)imaging,extended focus,3D tracking,full-field analysis,high sensitivity,and a wide range of measurements from nanometers to centimeters,permit completely non-invasive characterizations on a full-scale.Several holographic experimental results of typical samples are reported and discussed where DH plays a primary role as a tool gauge for soft matter. | Zhe Wang Lisa Miccio Sara Coppola Vittorio Bianco Pasquale Memmolo Volodymyr Tkachenko Vincenzo Ferraro Ernesto Di Maio Pier Luca Maffettone Pietro Ferraro | 2022 | Light(Advanced Manufacturing)2022，3，1： | 0 |
| 12 | Advancing computer-generated holographic display thanks to diffraction model-driven deep nets显示文摘Advancements are reported in computer-generated holography proofing RGB 4K display through a new strategy based on diffraction model-driven deep networks. In the new 4K-DMDNet, the network is not a “black box” anymore. Rather, the input-output relation must obey to the physics of wavefront propagation, which is embedded here as a constraint. Thus, a labelled dataset is not required, and the model shows superior generalization capabilities with respect to data-driven approaches. The method is promising for the new generation of RGB 4K holographic display, as well as augmented and virtual reality systems. | Vittorio Bianco Pietro Ferraro | 2024 | Opto-Electronic Advances2024，7，1： | 0 |
| 13 | 3D imaging lipidometry in single cell by in-flow holographic tomography显示文摘The most recent discoveries in the biochemical field are highlighting the increasingly important role of lipid droplets(LDs)in several regulatory mechanisms in living cells.LDs are dynamic organelles and therefore their complete characterization in terms of number,size,spatial positioning and relative distribution in the cell volume can shed light on the roles played by LDs.Until now,fluorescence microscopy and transmission electron microscopy are assessed as the gold standard methods for identifying LDs due to their high sensitivity and specificity.However,such methods generally only provide 2D assays and partial measurements.Furthermore,both can be destructive and with low productivity,thus limiting analysis of large cell numbers in a sample.Here we demonstrate for the first time the capability of 3D visualization and the full LD characterization in high-throughput with a tomographic phase-contrast flow-cytometer,by using ovarian cancer cells and monocyte cell lines as models.A strategy for retrieving significant parameters on spatial correlations and LD 3D positioning inside each cell volume is reported.The information gathered by this new method could allow more in depth understanding and lead to new discoveries on how LDs are correlated to cellular functions. | Daniele Pirone Daniele Sirico Lisa Miccio Vittorio Bianco Martina Mugnano Danila del Giudice Gianandrea Pasquinelli Sabrina Valente Silvia Lemma Luisa Iommarini Ivana Kurelac Pasquale Memmolo Pietro Ferraro | 2023 | Opto-Electronic Advances2023，6，1： | 0 |
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