bluuebunny/crossref_metadata_2025 huggingface dataset:
Herzog Georg von Calenberg – barocker Staatschef und Dienstherr von Heinrich Schütz
Authors: Schwark Thomas
Published: September 2020

Die dynastischen Verhältnisse im Herrschaftsbereich Braunschweig-Lüneburg-Calenberg hatten einen nicht unbedeutenden und direkten Einfluss auf die Lebenswelt von Heinrich Schütz, der 1638 als Leiter der neugegründeten Hofkapelle nach Hannover berufen wurde. Deswegen soll neben dem System des frühmodernen Welfenstaates Schütz‘ Dienstherr und Auftraggeber Herzog Georg von Calenberg (1582–1641) in den Fokus genommen werden und ein vertiefter Blick auf die politischen und gesellschaftlichen Verhältnisse jener Zeit geworfen werden.
Orgeln, Orgelbauer und Organisten der Schütz-Zeit in Hessen
Authors: Aumüller Gerhard
Published: September 2020

Heinrich Schütz war zweiter Hoforganist von Landgraf Moritz dem Gelehrten in Kassel. Dieser Artikel widmet sich der Zeit Schütz‘ in Hessen und gibt Einblick in die Kasseler Hofkapelle (1587-1617), Orgeln, Orgelbauer, Organisten, den Wandel der Orgelkunst und Musikpflege in dieser Zeit.
Simon VI. zur Lippe – Konkurrent oder Impulsgeber in Orgelbaufragen für Moritz den Gelehrten?
Authors: Lüpkes Vera
Published: September 2020

Dieser Artikel geht der Frage nach, ob Simon VI. zu Lippe als Konkurrent oder Impulsgeber in Orgelbaufragen für den Landgrafen Moritz von Hessen-Kassel fungierte. Er gibt Einblick in die Biografien und das höfische Musikleben dieser beiden Adligen.
Das »Seminarium modulatoriae vocalis« (1645) von Otto Gibel: Eine Ergänzung
Authors: Möller Eberhard
Published: September 2020

Dieser Artikel widmet sich der musikalischen Sammlung Seminarium Modulatoriae Vocalis (1645) von Otto Gibel, das vier Werke von Heinrich Schütz aus dem ersten Teil der Kleinen geistlichen Konzerte (1636) enthält. Der Autor vermutet, dass die von Gibel für seine Schüler als Musterbeispiele vorgesehenen Schütz’schen Werke von der Mindener Kantorei aufgeführt wurden und ein praktisches Gegenstück zu den theoretischen Erörterungen in der genannten Korrespondenz bilden.
Disputationen mit Widmungen an Heinrich Schütz
Authors: Möller Eberhard
Published: September 2020

Der Artikel präsentiert zwei Heinrich Schütz gewidmete Disputationen. Es sind dies zum einen die des vogtländischen Pfarrers Andreas Weckmann an der Universität Jena vorgelegte unter dem Titel Panacea Officinæ Sacræ sowie die weißenfelser Disputatio Politica De Statu Naturali Et Legali von Heinrich Reichart. Versuche über die Beziehungen der Autoren zu Schütz schließen sich an.
Vom Umgang mit Luthers theologischer Musikanschauung
Authors: Herbst Wolfgang
Published: September 2020

Der Artikel umreißt das historische Werden der Sichtweise(n) auf Luthers theologische Musikanschauung. Dabei wird festgestellt, dass diese lange gar keine Beachtung und erst im 20. Jahrhundert verstärkt Aufmerksamkeit gefunden habe. Dazu geht der Artikel auf einige Protagonisten dieser Entwicklung wie deren Bezug zu zeit- wie kirchengeschichtlichen Umständen ein und weist auch deren teilweise Einseitigkeit nach. Der Text kommt zu dem Schluss, dass Luthers Musikanschauung stärker als bisher in die wissenschaftliche Forschung über ihn einbezogen werden müsse, da die aufgezeigten vergangenen Bezugnahmen auf Luther mehr eine Vereinnahmung unter bestimmten Vorzeichen dargestellt hätten. Dementgegen sei Musik in Luthers Verständnis erstens weder teilbar in weltliche und kirchliche und zudem unverzichtbarer Bestandteil seiner Lehre, die auf seine ganze Theologie ausstrahle.
Imaging using Single-pixel Detector and Multicore Fiber
Authors: Ikeda Kanami , Kameyama Yohei , Koyama Osanori , Yamada Makoto
Published: September 2020

A single-pixel imaging (SPI) system using a multi-core fiber (MCF), which is referred to as MCF-SPI, is proposed. It combines the MCF technology and SPI algorithm. A preliminary experiment of the spatial pattern generation was demonstrated using an MCF.
Vergence-accommodation conflict free near eye volumetric display principle with high-speed display rate of 1000 volumes/s
Authors: Suzuki Kohei , Fukano Yugo , Oku Hiromasa
Published: September 2020

In this paper, we propose a high-speed volumetric display principle that can present 6 images on different depths within 1 ms, and report the result of evaluation.
Overview of three dimensional (3D) integral imaging (InIm) based human gesture recognition under degraded environments
Authors: Javidi Bahram , Krishnan Gokul , Shen Xin , Sotoca Jose M. , Pla Filiberto , Latorre-Carmona Pedro
Published: September 2020

We overview the performance of three dimensional (3D) integral imaging based human gesture recognition techniques under degraded environments. Using 3D integral imaging-based strategies we find substantial improvements over conventional 2D approaches for human gesture recognition in degraded conditions.
Generation of coaxial arrays of petal-like modes using composite spiral multi-value zone plates
Authors: Ghebjagh Shima Gharbi , Sinzinger Stefan
Published: September 2020

A method is proposed for creating a coaxial array of petal-like modes by using a multi focal composite spiral zone plate. The composite diffractive element superimposes two oppositely charged optical vortices to generate a desired number of equal intensity petal-like beams.
Multispectral Time-of-Flight Range Imaging: Towards a 3.5 D Camera
Authors: Merbold Hannes , Iten Marc-Alexander , Catregn Gion-Pol
Published: September 2020

Time-of-flight cameras with sequenced multi-wavelength illumination or swing-in bandpass filters allow recording three spatial dimensions as well as a limited number of spectral data points.
Learning-based depth estimation on wide angle images with non linear distortion
Authors: Buquet Julie , Zhang Jinsong , Roulet Patrice , Lalonde Jean-Francois , Thibault Simon
Published: September 2020

We developed a Convolutional Neural Network to estimate depth on wide-angle images using panomorph lens with controlled distortion. We simulated three different lens model and compared their performances based on their zone of augmented resolution.
Fast LiDAR imaging of sparse targets with compressive Hadamard samples
Authors: Kravets Vladislav , Stern Adrian
Published: September 2020

An efficient adaptive sensing technique for LiDAR imaging of sparse targets with a Hadamard sensing matrix is introduced. A fast, real-time reconstruction is performed by a convolutional neural network.
Integral Imaging Light Field Display Using a Geometrical Lightguide
Authors: Xu Miaomiao , Hua Hong
Published: September 2020

In this paper, an integral-imaging-based light field display is implemented in a geometrical-lightguide-based augmented reality system to create 3D environment with correct focus cues. Polymer-dispersed liquid-crystal films are utilized to help increase the out-coupling viewing density.
Overview of integral imaging-based optical signal detection in turbid water using temporally encoded light sources
Authors: Joshi Rakesh , O’connor Timothy , Shen Xin , Javidi Bahram
Published: September 2020

We overview an optical signal detection system based on the multi-dimensional integral imaging and temporally encoded light source. The overviewed 3D integral imaging-based system enhances the detection capabilities in turbid water in comparison to conventional 2D imaging methods.
Plant Cell Observation by TIE-based Fluorescence Imaging
Authors: Rajput Sudheesh K , Matoba Osamu , Kumar Manoj , Quan Xiangyu , Awatsuji Yasuhiro , Tamada Yosuke
Published: September 2020

We present fluorescence imaging of plant cells based on transport of intensity equation and Fresnel propagation. At first, the phase distribution is obtained from the recorded three- defocus fluorescence intensity images and then from phase and corresponding intensity defocus image, the focus images of plant cell sample can be retrieved at various planes after free space propagation.
Fractional Fourier transform method of chirped fringe pattern analysis for profilometry
Authors: Patiño-Vanegas Alberto , Altamar-Mercado Hernando , Torres Rafael
Published: September 2020

A method is proposed to obtain the 3D profile of an object or the shape of a wavefront. The analysis of linearly chirped cosenoidal fringes is performed in the fractional Fourier domain.
Numerical investigation of quantum fluctuation in phase-shifting interferometry
Authors: Tahara Tatsuki , Okamoto Ryo
Published: September 2020

We numerically investigate the effect of quantum fluctuation in phase-shifting interferometry. Numerical results agree well with the theoretical ones and confirm the limit of measurement accuracy and a trade-off relationship between amplitude and phase.
Complex hologram generation of multi-depth images using deep neural network
Authors: Lee Juhyun , Jeong Jinsoo , Cho Jaebum , Yoo Dongheon , Lee Byoungho
Published: September 2020

We propose a method to generate holograms using a deep neural network. The proposed network can generate complex holograms from slice images of different depths. It is verified that the images reconstructed from the hologram can be formed at two depths.
Auto-optimization of GPU Code for Computer-Generated Hologram Calculation
Authors: Sakai Hayato , Sakamoto Yuji
Published: September 2020

Computer-generated hologram (CGH) calculation time is huge. A GPU is used for speeding up calculation, but it is difficult to determine the optimal CGH program code. We propose GPU code auto-optimization method for CGH.
Self-referenced interferometric methods to determine topological charge of vortex beams
Authors: Kumar Praveen , Nishchal Naveen K
Published: September 2020

Twisted light beam with helical phasefront have a phase singularity point in their beam axis. Such vortex beams cany orbital angular momentum. In this study, we discuss the techniques to determine the topological charge carried by vortex beams using self-referenced interferometric methods.
Method of Concave Pin-mirror for Near-eye Display
Authors: Fan Mao , Wu Binghua , Zhang Hao
Published: September 2020

Near-eye augmented reality display is one of the hot topics which has developed rapidly in recent years. Currently, various optical display systems couldn’t meet the requirements with the light, convenience, large field of view for near-eye head-mounted display. We present a method of concave pin-mirror for near-eye augmented reality display based on the simple concave reflective mirror and pinhole imaging. This whole system has the same size as normal glasses, and it it convenient, as well as the field of view reaching 88°. The proposed method provides a new idea for future near-eye display.
Label-Free Mass Quantitation of Individual Cathepsin K Enzymes using Interferrometric Scattering Microscopy
Authors: Melo Luke , Andrault Pierre-Marie , Kowal Matthew , Brömme Dieter , Grant Edward
Published: September 2020

Interferrometric scattering microscopy is used to mass quantify individual Cathepsin K enzymes in solution. Treatments for osteoporosis are assessed by monitoring the oligomerization of Cathepsin K.
Diffuse Optical Imaging through Simultaneous Multiple- Sinusoids Driving Light Sources
Authors: Hsu Yan-Yang , Gan Hon-Wei , Lee Bo-Ting , Hsu Ya-Fen , Jiang Huabei , Pan Min-Chun
Published: September 2020

This study presents a novel measurement scheme for near-infrared diffuse optical tomography through employing square-wave driving light sources to simultaneously obtain amplitude and phase delay data of multiple sinusoids for the reconstruction of optical-coefficient images.
Compact Photophoretic Trap Volumetric Display Using Focus Tunable Lens
Authors: Chae Minseok , Bang Kiseung , Jeong Jinsoo , Lee Byoungho
Published: September 2020

Conventional photophoretic trap volumetric display moves the particle along the optical axis with a bulky linear stage. Here, we used a focus tunable lens to display patterns along the optical axis in a compact system.
Deep Learning Model-Based for Image Reconstruction in Compressive Spectral Imaging
Authors: Fonseca Yesid , Arias Kevin , Pinilla Samuel , Arguello Henry
Published: September 2020

A state-of-the-art deep learning framework, HyperReconNet, recover an spectral image from its compressed measurements. However, HyperReconNet does not take the sensing matrix into a account on the training. We propose a residual modbased convolutional neural network to address this limitation.
Imaging-free object classification under photon-limited detection via machine learning with simulated training data
Authors: Shi Jianhong , Zhu Yan , Wu Xiaoyan , Zeng Guihua
Published: September 2020

A proof-of-principle experiment was carried out to demonstrate that under a photon- limited detection condition, an imaging-free image-based object classification could be realized via simple machine-learning algorithm with simulated training data.
Tikhonov regularization method to analyze the aberrations in the wavefront determination using the Irradiance Transport Equation.
Authors: Arriaga Hernandez J. A. , Cuevas Otahola B. T. , Oliveros J. Oliveros , Castillo M. Morin
Published: September 2020

The Irradiance Transport Equation is considered as an elliptical differential equation that determines the phase as a poorly stated problem. The instability of such a problem is handled as Tikhonov regularization method to determine aberrations.
Deep Learning (DL) Of Virtual Organelle Self-Coding For Fluorescence Microscopy
Authors: Nguyen T. , Bui V. , Thai Anh , Lam V. , Raub C. B. , Chang L.-C , Nehmetallah G.
Published: September 2020

Fluorescence microscopy (FM) is costly, time consuming, and requires considerable sample preparation. Here we present a virtual fluorescence staining method based on DL to transform fluorescence images of molecular labels into other molecular fluorescence labels.
High-Resolution Full-Field Optical Coherence Microscopy Using Partially Spatially Coherent Monochromatic Light Source
Authors: Bhatt Sunil , Butola Ankit , Kanade Sheetal Raosaheb , Kumar Anand , Mehta Dalip Singh
Published: September 2020

In optical coherence tomography a broadband light source is used for high axial resolution. Here we show high-resolution sectioning in full-field optical coherence microscopy using longitudinal spatial coherence properties of a monochromatic light source.
Physics-based Holo-Net for three-dimensional imaging
Authors: Chen Ni , Li Yuqi , Heidrich Wolfgang
Published: September 2020

We propose a physics-based holographic network (PBHolo-Net) for three dimensional imaging. Due to the involvement of the wavefield propagation, the network is efficient, stable, and can perform more precise hologram reconstruction.
Compressing 3D imaging by Coded Aperture Correlation Digital Holography
Authors: Liu Chao , Wan Yuhong , Man Tianlong , Qin Yi
Published: September 2020

Compressive reconstmction algorithm based adaptive dictionary learning is developed and used for single-exposure non-scanning 3D imaging by interferenceless Coded Aperture Correlation Holography. Background noise and reconstruction error are suppressed effectively while reconstruction accuracy is improved.
Deep-learning in digital holography with imperfect data
Authors: Meng Zhang , Yin Da , Ding Liqi , Feng Shaotong , Yuan Caojin
Published: September 2020

We propose a digital holographic reconstruction algorithm based on deep learning with imperfect data. Experiments prove that this algorithm can reduce the impact of uncontrollable environmental factors on the dataset and obtain satisfactoiy reconstruction images.
Coded aperture imaging with sparse point response for improving resolution and signal-to-noise ratio
Authors: Rai Mani Ratnam , Rosen Joseph
Published: September 2020

The resolution limit of the interferenceless coded aperture correlation holography system is improved by inserting a phase-only SLM before the system entrance and by introducing a sparse point response to improve the signal-to-noise ratio.
Three-dimensional super-resolution imaging with self-interference digital holography
Authors: Marar Abhijit , Kner Peter
Published: September 2020

We describe the use of self-interference digital holography for 3D super resolution microscopy. To prove the principle, we image fluorescent beads achieving a localization precision of 5 nm laterally and 40 nm axially.
Optical sensing of chiral polymer thin films
Authors: Lee Geon Joon , Cho Min Ju , Choi Eun Ha , Choi Dong Hoon
Published: September 2020

The chiroptical properties of polyfluorene–phenylene (ℎ) thin films were studied using circular dichroism (CD), surface-enhanced Raman scattering (SERS), attenuated total reflection (ATR), and spectroscopic ellipsometry. The pristine ℎ films exhibited significant CD at room temperature, and the chirality increased by thermal annealing at 120 ℃. SERS and ATR spectra indicated that the chirality enhancement was due to the self-organization and/or rearrangement of the polymer backbones by thermal annealing. Optical sensing of the chiral polymers was demonstrated using SERS spectra of the chiral polymer films on gold. Optical sensing properties of the chiral ℎ films were compared with those of the achiral polyfluorene films.
Photoacoustic detection based on high sensitivity microsphere coupling
Authors: Sun Jialve , Zhang Peiji , Xiao Yunfeng , Li Changhui
Published: September 2020

we use microsphere coupling with fiber (MCR) to detect photoacoustic signal and obtain noise equivalent pressures as low as 76 Pa with Q factor close to 102 * * * 6. And the MCR system can be as a platform used multiple times thought encapsulation of MY-133-MC glue.
Laser spectroscopy references based on hollow-core photonic crystal fibers
Authors: Hrabina Jan , Jelinek Michal , Skoupy Radim , Hola Miroslava , Mikel Bretislav , Cip Ondrej , Lazar Josef
Published: September 2020

We present a novel design of hollow-core photonic ciystal fiber based spectroscopic references purposed for laser frequency stabilization and spectroscopic analysis with low optical losses and mini-invasive approach of gas media filling.
Imaging of 2D Objects through a Non-dispersive Chiral Thick Lens with Bimodal Propagation using Fresnel Coefficients
Authors: Salaheddeen G. Bugoffa , Chatterjee Monish R.
Published: September 2020

Fresnel coefficients are used to track dual image formation for a 2D object via bimodal (right- and left-circularly polarized) propagation through a non-dispersive chiral thick lens, and real and virtual image conditions investigated based on material parameters.
Image transmission across a magnetic chiral boundary under uniform and Gaussian-profile beams
Authors: Chatterjee Monish R. , Buaossa Nagi A.
Published: September 2020

Results obtained for Fresnel coefficients corresponding to a magnetic achiral/chiral interface under different incident angles and permittivity/permeability ratios, are extended to examine the transmitted amplitude profile of a 2D image/transparency. Both uniform and Gaussian- profile incident beams are considered.
Simulation of the non-linearity of photoacoustic signals for the detection of molecules of atmospheric interest
Authors: Zeninari V. , Ibrahim C. Mohamed , Vallon R. , Parvitte B.
Published: September 2020

We report on the simulation of the non-linearity of photoacoustic signals for gas detection using laser sources. These phenomena occur mainly in the near-infrared and/or in the presence of water vapor in the gas mixure.
Enlargement of viewing angle in electro-holography using time division method and multiple reconstruction lights
Authors: Fujmori NAruto , Sakamoto Yuji
Published: September 2020

In this paper, we propose a simple optical system that eliminates the 0th-order light by expanding the viewing angle by time division using multiple reconstructed illumination lights for one LCD.
Convolutional Neural Networks Applied to Inline Particle Holography
Authors: Hedlund Marcus , Holmstrom Caroline , Deak Elliot Harenby , Olsson Robert , Sjodahl Mikael , Ohman Johan
Published: September 2020

Three-dimensional particle positioning from inline holograms is performed using convolutional neural networks. The faster R-CNN architecture is implemented for multi-particle identification and lateral positioning, and a second network estimates the depth position. Supervised learning is used to train the network using simulated holograms.
Compressive spectral imaging via virtual side information
Authors: Marquez Miguel , Rueda Hoover , Rojas Fernando , Arguello Henry
Published: September 2020

This work introduces a compressive snapshot imaging device that efficiently captures the spectral and spatial information along with a mathematical model that allows reconstructs a spectral image with a high-spatial-resolution from a single compressed measurement.
Discriminating the Temperature and Strain Responses of a Fibre Bragg Grating Sensor by Exploiting its Transmittance
Authors: Chakravartula Venkatesh , Rani Shivani , Samiappan Dhanalakshmi , Kumar R.
Published: September 2020

We propose a novel technique to discriminate the temperature and strain response of a fibre Bragg grating sensor, using both the grating transmittance and Bragg wavelength. Both measurands exhibit a linear relation with the transmittance.
Design of waveguide eyeglass for full-color display with large field of view
Authors: Shi Xueliang , Liu Juan , Xiao Jiasheng , Han Jian
Published: September 2020

A waveguide eyeglass system integrating freeform elements and volume gratings have been proposed and designed. The simulation results show that the hybrid system can show full color images with FOV 31.56°x24° (horizontal X vertical).
Optical Machine Learning with Single-pixel Imaging
Authors: Jiao Shuming , Feng Jun , Gao Yang , Lei Ting , Xie Zhenwei , Yuan Xiaocong
Published: September 2020

An optical learning machine is designed based on single-pixel imaging, which can perform pattern recognition full-optically without object image reconstruction. It has advantages of incoherent illumination, low experimental complexity and being programmable.
Full-color Holographic System featuring Multiple Point Cloud Gridding and Parallel Computing for Representation of Real 3D Objects
Authors: Zhao Yu , Zhu Li-Ming , Piao Yan-Ling , Kim Nam
Published: September 2020

We propose multiple point cloud gridding and parallel computing methods to accelerate the full-color holographic system. Compared to conventional methods, the computational complexity is reduced. The feasibility of our method is confirmed numerically and optically.
Enlarged viewing zone using light wave propagation simulation
Authors: Kobayakawa Takahiro , Sakamoto Yuji
Published: September 2020

We propose a calculation method based on the Fourier transform holography calculation method and a reproduction optical system that can enlarge viewing angle of electro-holography regardless of the pixel pitch.
Capabilities and Design Parameters for Volume Holographic Optical Elements in Imaging Systems
Authors: Kostuk Raymond K.
Published: September 2020

New forms of imaging modalities such as selective imaging and augmented reality eyewear, place special requirements on the optics used in these systems. This presentation reviews the properties of volume holographic materials for these applications.
Optimization Methods for 3D and 4D Space-Time Reconstruction in Imaging
Authors: Heidrich Wolfgang
Published: September 2020

4D inverse problems in imaging are historically solved independently per time step. Recent advances in Joint 4D reconstruction allow for significantly improved results especially when the 3D problem is very ill-posed. The methods are broadly applicable to tomography, fluid imaging, and many other imaging problems.
Label-free in vitro quantification of medical nanoparticle effects on macrophages with digital holographic microscopy
Authors: Eder Kai Moritz , Marzi Anne , Barroso Alvaro , Kemper Björn , Schnekenburger Jürgen
Published: September 2020

Label-free digital holographic microscopy was applied for time resolved in vitro quantification of effects induced by medical nanoparticles and digitonin on mouse macrophages.
Turbulence Profiling Along a Flying Drone Path with TILAS Transceiver & Downwash Effect
Authors: Polnau Ernst , Vorontsov Mikhail
Published: September 2020

The possibility of target-in-the-loop atmospheric sensing (TILAS) using a low-power laser transceiver and a retro-target attached into a flying drone for atmospheric turbulence profiling is discussed and demonstrated. The results of first field tests focusing on the influence of rotor downwash on the TILAS measurements are presented.
Optimization of Turbulence Phase Screen Distribution for Wave-Optics Analysis of Laser Beam Propagation over Extended-Range Atmospheric Paths
Authors: Vorontsov Artem M. , Lachinova Svetlana L. , Vorontsov Mikhail A.
Published: September 2020

A mathematical model for optimal positioning of turbulence phase screens of nearly equal strength along long-range, slant laser beam propagation paths is presented and analyzed. The proposed technique is evaluated using wave-optics numerical simulations.
Quality Evaluation of Reconstructed Images in Digital Holography to Analyze the Effects of Source Power and Exposure Times
Authors: Dwivedi Gaurav , Pensia Lavlesh , Debnath Sanjit K. , Kumar Raj
Published: September 2020

Quality of reconstructed images in digital holography is evaluated in terms of structural similarity (SSIM) index. Digital holograms of a diffused coin are recorded at different exposure times of recording digital sensor for different source powers.
Fourier Optics Modeling of Display Sparkle from AntiGlare Cover Glass: Comparison to Experimental Data
Authors: Cecala Christine , Nelson Cameron , West James A. , Weidman David
Published: September 2020

Display sparkle is described by the spatial variation in pixel brightness from displays with anti-glare cover glass. Here we describe an efficient Fourier optics-based technique for calculating sparkle and compare it to experimental results.
Metamaterials-based IR Sensor with Internal Reference for Chemical Detection
Authors: Trimby Liam , Alimagham Farah , Alexeev Arseny , Wright David C. , Hutter Tanya
Published: September 2020

An approach for chemical sensing based on an ultra-thin tunable metamaterial band-pass IR transmission filter is proposed. Simulations supporting the concept are presented, with high field- enhancement and transmission coinciding with an analyte’s absorption peak.
Integrated Mid-IR Photonics for Gas and Aerosol Sensors
Authors: Singh Robin , Su Peter , Agarwal Anu , Anthony Brian W
Published: September 2020

We propose an on-chip mid-infrared (MIR) photonic spectroscopy platform for aerosol and gas characterization to obtain highly discriminatory information on constituent chemistry. Sensing of aerosols (liquid or solid particles in the gas phase) is crucial for various environmental, climactic, and pulmonary healthcare applications. Further, there are several unintended exposures to bioaerosols, such as with viruses, bacteria, and fungi, for instance, the current pandemic of COVID-19 which is occurring across the world. Currently, chemical characterization of aerosols is performed using FTIR spectroscopy and Raman spectroscopy, both yielding chemical fingerprinting. But, these are bench-scale instruments, and no single spectrometer provides physical- chemical characterization of aerosol particles. Hence, we develop a miniaturized framework for performing in-situ physicochemical characterization.
Transmittance Multispectral Imaging for Edible Oil Quality Assessment
Authors: Weerasooriya H.M.H.K. , Lakmal H.M.S. , Ranasinghe D.Y.L. , Bandara W.G.C. , Herath H.M.V.R. , Godaliyadda G.M.R.I. , Ekanayake M.P.B. , Madujith T.
Published: September 2020

An algorithm is proposed to estimate the adulteration level of coconut oil, with palm oil as the adulterant, which utilizes transmittance-based multispectral images of oil samples obtained utilizing an in-house developed multispectral imaging system.
Noise and bias in off-axis digital holography for measurements in acoustic waveguides
Authors: Gong Lijia , Penelet Guillaume , Picart Pascal
Published: September 2020

This paper discusses noise and bias in the method of holographic interferometry applied to the study of acoustics phenomena. The influence of noise on the measurement of acoustic pressure is described by an analytical approach. Relationships to quantify the minimum measurable fluid density and acoustic pressure are given by taking into account the experimental parameters of the setup. These parameters are related to the spatial bandwidths, number of electrons in pixels, readout noise, and quantization noise. Experimental results show that theoretical relations are relatively close to experimental data and that the lower pressure measurement limit is on the order of 15 Pa for the acoustics pressure. The case of waveguides excited by an internal or external acoustic source is investigated. Specifically, for the case of studies in thermoacoustics, this paper demonstrates that the parasitic coupling of vibrations can be compensated. The proposed method is based on the determination of the amplitude and phase of the parasitic oscillation, requiring a few assumptions related to the physics of the underlying phenomenon. Successful compensation is obtained and yields experimental data in agreement with the theoretical predictions.
Optical Turbulence forecast: new perspectives
Authors: Masciadri Elena , Martelloni Gianluca , Turchi Alessio
Published: September 2020

In this contribution I present results achieved recently in the field of the OT forecast that push further the limit of the accuracy of the OT forecasts and open to new perspectives in this field.
Holographic Modal Wavefront Sensor Performance in Imaging Systems with Annular Pupils
Authors: Kong Fanpeng , Lambert Andrew
Published: September 2020

We analyzed the performance of holographic modal wavefront sensor in imaging systems with annular pupils. Comparison of wavefront sensing error by using both integral intensity and weighted average intensity for the reconstructed spots is given.
Adaptive optics control with predictive controllers based on frozen-flow models for Low-Earth Orbit satellite tracking
Authors: Prengére Léonard , Kulcsàr Caroline , Raynaud Henri-François
Published: September 2020

We evaluate the performance of LQG controllers built on autoregressive dynamical models of order 2 in the case of Low Earth Orbit satellite tracking case. End-to-end simulations have shown impressive performance improvement with respect to the standard integral action regulator. Robustness results to errors on wind profile prior are also presented.
Deep Learning for Turbulence-Tolerant Wavefront Reconstruction of Shack-Hartmann Wavefront Sensors
Authors: DuBose Theodore B. , Gardner Dennis F. , Watnik Abbie T.
Published: September 2020

Shack-Hartmann wavefront sensors are limited in turbulence by non-uniform illumination and branch points. We describe the Intensity/Slopes Network (ISNet), which reconstructs wavefronts from intensity and slope information, and demonstrate that it improves performance in turbulence.
Adaptive Optics Systems at the Large Binocular Telescope
Authors: Christou Julian C. , Pinna Enrico , Miller Doug , Walsh Shane , Agapito Guido , Rossi Fabio , Plantet Cedric , Ertel Steve , Rothberg Barry
Published: September 2020

We present an overview of the AO systems at the LBT concentrating on the unique capability of two adaptive secondary mirrors and pyramid wavefront sensing. These permit AO compensation down to 16th magnitude guide stars enhancing field coverage as well as extreme AO compensation for bright targets.
Sensorless Adaptive Optics for Light Sheet Microscopy
Authors: Liu Yang , Kner Peter
Published: September 2020

Light Sheet Microscopy has become a popular imaging method for biological research, especially for imaging thick tissue specimens and model organisms. Here, we describe our implementation of adaptive optics with light sheet microscopy and show correction over a hundred microns deep into zebrafish and fruit flies.
Adaptive optics multiphoton microscope for imaging microbial processes in highly scattering soil and roots
Authors: Wang Dongping , Poyneer Lisa A. , Weber Peter K. , Chen Diana C. , Ly Sonny , Laurence Ted A. , Lee Janghyuk , Ammons S. Mark , Nuccio Erin E. , Pett-Ridge Jennifer
Published: September 2020

In this project, we are developing a custom adaptive optics system integrated with multiphoton microscopy for visualizing plant-microbe-mineral interactions in the rhizosphere to shrdy sustainable food, hrel production, and environmental processes.
Adaptive optics challenges for CILAS
Authors: Sinquin Jean-Christophe , Bastard Arnaud , Beaufort Emmanuel , Buisson Benjamin , Casier Olivier , Gervais Mathieu , Groëninck Denis , Krol Hélène , Landureau Christophe , Leroux Sébastien , Michel Laura , Moreau Aurélien , Morin Pierre , Pagès Hubert , Palomo Richard , Roux Bruno , Vaillant Stéphane , Wehrlé Ronan
Published: September 2020

CILAS pioneer in deformable mirrors proposes an overview of its technologies which are the monomorph and the piezo-stack mirrors. Recent performances of these mirrors are presented followed by the next evolutions that can be foreseen.
Fabrication and Performance Testing of a Novel Deformable Mirror Based on a Magnetic Polymeric Membrane
Authors: Lussier Renaud , Shooner Thomas , Brousseau Denis , Ritcey Anna , Thibault Simon
Published: September 2020

We report the development of a new family of deformable mirrors using soft polymeric membranes with embedded magnetic nanoparticles. We measure the performance metrics of such membranes under the influence of voice coil actuators.
The improvement of the focus of laser beam passed through the scattering atmosphere by means of adaptive optics
Authors: Kudryashov A.V , Galaktionov I.V. , Sheldakova J.V
Published: September 2020

The investigations of focusing improvement of laser beam propagated through a scattering aerosol were performed. Experimental setup with the bimorph deformable mirror was designed.
New dimension for the phase retrieval problem
Authors: Soloviev Oleg , Thao Nguyen Hieu , Verhaegen Michel , Vdovin Gleb
Published: September 2020

We consider the extension of the traditional projection-based phase retrieval algorithms by increasing the problem dimensionality and introducing novel projection operators. The approach is demonstrated on an example of phase retrieval for the high-NA case.
High-Dynamic Range, High-Resolution Freeform Metrology with Optical Differentiation Wavefront Sensing
Authors: Swain B. R. , Dorrer C. , DeFisher S. , Qiao J.
Published: September 2020

Wavefront generated by freeform phase plate is measured with an optical differentiation wavefront sensor. Comparison of the measurement with a commercial scanning interferometer shows M0 (A=633 nm) agreement, demonstrating its potential for metrology applications.
Closed-Loop Multiconjugate Adaptive Optics for Microscopy
Authors: Lane Richard S. K. , Hampson Karen M. , Cui Jiahe , Wincott Matthew , Hussain Syed , Banerjee Kaustubh , Rajaeipour Pouya , Zappe Hans , Ataman Çaglar , Booth Martin J.
Published: September 2020

We have developed a fast closed-loop multiconjugate AO (MCAO) system that performs field-dependent aberration correction using direct sensing. A Shack-Hartmann sensor coupled with an integral control law is used. Results from biological samples are presented.
The Use of Adaptive Optics Imaging for Clinical Trials
Authors: Dubis Adam M , Moosajee Mariya , Greenwood John
Published: September 2020

Since its first use in retinal imaging Just over 20 years ago, adaptive optics (AO)-aided imaging has led to revolutionary changes in our understanding of retinal and neurological diseases.
Optical Assessment of Cone Function through Adaptive Optics Scanning Laser Ophthalmoscopy - the Cone Optoretinogram
Authors: Morgan Jessica I. W. , Brainard David H. , Cooper Robert F.
Published: September 2020

We use adaptive optics scanning laser ophthalmoscopy to measure the cone optoretinogram, an optical measure of photoreceptor function that arises from a change in nearinfrared reflectance in response to visual stimuli.
3-D Fourier Synthesis Active Imaging using a Spatio-Spectral Non-Redundant Array of Silicon-Photonic Beamsteering Tiles
Authors: Wagner K.H. , Dostart N. , Ting K.T. , Zhang B. , Brand M. , Feldkhun D. , Popović M.
Published: September 2020

A set of nonredundant frequency shifted beams transmitted from a 2-D nonredundant array of optical phased array tiles interferes pairwise to produce traveling fringes. Detected backscatter encodes a sufficient number of 3-D spatial Fourier components to enable Fourier synthesis imaging of a 3-D LIDAR target.
Computational coherent imaging based on rotational phase modulation by a cylindrical lens
Authors: Geng Yong , Tan Jiubin , Liu Zhengjun
Published: September 2020

We propose a computational coherent imaging system based on cylindrical lens’s rotation modulation(RSCL), in which rotation angle is calculated by designed two-step Radon transform(TsRT). This method overcomes longitudinal sampling rate fluctuation in axial multiimage imaging.
Model-based Phase Retrieval with Deep Denoiser Prior
Authors: Işıl Çağatay , Oktem Figen S.
Published: September 2020

We develop a novel phase-retrieval algorithm with deep denoiser prior. The approach incorporates learning-based prior to the hybrid input-output method through plug- and-play regularization. Results demonstrate the state-of-the-art performance of our approach and its computational efficiency.
Multi-sensor lensless imaging: synthetic large-format sensing with a disjoint sensor array
Authors: Zhao Ellin , Deshler Nicolas , Monakhova Kristina , Waller Laura
Published: September 2020

We demonstrate a lensless diffuser-based camera array for large field-of-view imaging. Images are captured from multiple disjoint sensors and the synthetic large format sensing area is recovered by solving a compressive sensing inverse problem.
Structured Illumination with Optical Phased Arrays (OPAs): First Demonstration of Multi-OPA Imaging
Authors: Dostart Nathan , Brand Michael , Zhang Bohan , Feldkhun Daniel , Popović Milos , Wagner Kelvin
Published: September 2020

We demonstrate image acquisition and reconstruction using a fringe-projection technique with a non-redundant set of optical phased arrays in the first demonstration of multi-OPA imaging.
3D Differential Phase Contrast Microscopy with Axial Motion Deblurring
Authors: Cao Ruiming , Kellman Michael , Ren David , Waller Laura
Published: September 2020

We demonstrate 3D phase imaging using asymmetric illumination patterns and defocused intensity measurements taken with continuous axial motion. The sample’s 3D refractive index is reconstructed with a motion-corrected transfer function.
Experimental Verification of 3D Model-Based Restoration for 3D-SIM with Data Reduction
Authors: Van Cong T. S. , Shabani Hasti , Preza Chrysanthe
Published: September 2020

We validate experimentally our previously developed 3D model-based (MB) approach for 3D structured illumination microscopy (3D-SIM) and show its ability to provide accurate 3D restoration using a reduced number of raw 3D-SIM images.
Non-separable modulation for channeled spatio-temporal Stokes polarimeters
Authors: Li Qiwei , Song Jiawei , Alenin Andrey S. , Tyo J. Scott
Published: September 2020

We present two novel spatio-temporal modulation methods which employ nonseparable elements in channeled Stokes polarimeters. Examining the technics’ performance under systematic error revealed their greater robustness compared to conventional separable systems.
Partially Coherent Object Length Estimation: Information-theoretic Analysis
Authors: Lee Kwan Kit , Ashok Amit
Published: September 2020

We analyze the fundamental limits of source angular extent estimation for direct imaging and mode-sorting measurements as a function of source coherence length. We demonstrate that mode-sorting outperforms direct imaging in the sub-Rayleigh regime.
Approaching Quantum-Optimal Imaging without Prior Knowledge of the Object Location
Authors: Grace Michael R. , Dutton Zachary , Ashok Amit , Guha Saikat
Published: September 2020

Spatial-mode-sorting (SPADE) receivers surpass Rayleigh’s criterion for in coherent imaging but are sensitive to nuisance parameters (e.g., misalignment). Our multistage detection strategy uses preliminary physical measurement(s) to build up required prior information for near-quantum-optimal, sub-diffraction imaging.
Non-Line-of-Sight Imaging of Thermal Objects via Speckle Correlations
Authors: Divitt Shawn , Gardner Dennis F. , Watnik Abbie T.
Published: September 2020

We demonstrate speckle correlation imaging of broadband, mid-infrared ther mal objects through diffusers and around corners at resolutions near the diffraction limit.
Speckle correlation imaging beyond memory effect using deep learning
Authors: Starshynov Ilya , Turpin Alex , Binner Philip , Faccio Daniele
Published: September 2020

Imaging through scattering media relies on ballistic photons, transfer matrix characterisation or the speckle memory effect. We demonstrate a deep learning approach for imaging in situations where none of these other approaches is possible.
Classifying decorrelation events hidden beneath scattering media via SPAD array detection
Authors: Liu Wenhui , Xu Shiqi , Qian Ruobing , Konda Pavan Chanda , Horstmeyer Roarke
Published: September 2020

We present a technique to detect and classify different spatiotemporal dynamic events within thick (5mm) and rapidly decorrelating (10-4s) scattering media using a SPAD array and an unsupervised deep embedding algorithm.
Megapixel Fluorescence Lifetime Imaging by Super-Resolution of a SPAD array
Authors: Zhou Yongzhuang , Hungerford Graham , Carles Guillem , Zickus Vytautas , McLoskey David , Faccio Daniele , Harvey Andrew R
Published: September 2020

Fluorescence lifetime microscopy (FLIM) is restricted by the modest pixel count of singlephoton-avalanche-diode (SPAD) arrays. We report micro-scanning and super-resolution of a SPAD array, yielding 32x improvement in resolution and enabling high-frame-rate, wide- field FLIM.
Localized plasmon assisted double moiré super-resolution imaging
Authors: Röhrich Ruslan , Koenderink A. Femius
Published: September 2020

We report on a new super-resolution imaging technique which combines structured illumination with localized surface plasmons to increase the lateral resolution in fluorescence imaging by more than a factor of two.
Engineering the pupil: from focus-free cameras to 3D microscopy
Authors: Harvey Andrew R , Carles Guillem , Handley Michael , Taylor Jonathan M. , Zammit Paul , Zhou Yongzhuang , Zickus Vytautas
Published: September 2020

Computational imaging with engineered pupil functions has been plagued by image artefacts. We discuss solutions to this problem that yield snapshot 3D imaging and localisation microscopy with the highest reported voxel count.
Snapshot multi-PSF 3D single-molecule localization microscopy using deep learning
Authors: Ikoma Hayato , Peng Yifan , Broxton Michael , Wetzstein Gordon
Published: September 2020

We propose a neural point spread function (PSF) engineering approach for 3D single-molecule localization microscopy. Our approach jointly optimizes the PSFs of multiple optical paths in a microscope with a differentiable localization algorithm.
Image Signal Transmission Passing Over a Barrier enabled by Optical Accelerating Beams
Authors: Chen Yujie , Lin Wei , Wen Yuanhui , Wang Baiming , Zhang Shuailong , Zhang Yanfeng , Yu Siyuan
Published: September 2020

We demonstrate a new type of image signal transmission based on nonconvex accelerating beams, with an image encoded in its angular spectrum successfully retrieved after multiple self-bending without and with obstruction in the transmission link.
Dual-camera snapshot spectral imaging with pupil-domain binary optical diffuser and Compressed Sensing algorithms
Authors: Hauser Jonathan , Golub Michael A. , Averbuch Amir , Nathan Menachem , Zheludev Valery A. , Kagan Michael
Published: September 2020

Snapshot spectral imaging was experimentally demonstrated using a monochromatic camera with binary diffuser, and an RGB camera. The diffuser sets a wavelength-dependent point- spread function which enables reconstruction of 1944x256x27 spectral cubes using Compressed Sensing algorithms.
Spectral Super-resolution by Image Sensor Tilting
Authors: Kitano Kazuya , Funatomi Takuya , Yasukuni Ryohei , Tanaka Kenichiro , Kubo Hiroyuki , Hosokawa Yoichiroh , Mukaigawa Yasuhiro
Published: September 2020

We propose a spectral super-resolution method to utilize additional rows using an area sensor tilting to enhance spectral measurement. To verify our method, we conducted preliminary experiments measuring sunlight and a low-pressure mercury-vapor lamp.
Sparse Representation and Simultaneous Equations for Four Stokes Parameters Based on Four Modulations
Authors: Fan Axin , Xu Tingfa , Wang Xi , Zhang Yuhan , Pan Chenguang , Hao Jianhua
Published: September 2020

With QWP and LCTF, four Stokes parameters are modulated into light intensity. After four modulations, it can be reconstructed not only by simultaneous equations but by sparse representation. This method is verified by good simulations.
Infrared Monolithic Double Diffractive Kinoform Doublet Coupled Design Model - Improvements and Material Growth Experiments
Authors: Larsen Kim
Published: September 2020

The coupled physical and phase ray-trace model for monolithic double diffractive doublets for optical design is modified to reduce residual errors. Initial “thick” material growth experiments results detailed. OCIS codes: (050.0050) Diffraction and gratings; (220.0220) Optical design and fabrication.
Estimation of Vesicle Transport near the Cellular Membrane using Image Processing
Authors: Lee Seohyun , Kim Hyuno , Higuchi Hideo , Ishikawa Masatoshi
Published: September 2020

To estimate the direction of vesicle movement near the cellular membrane, time series confocal image data of cells were collected and analyzed by image processing to calculate the active contour and the optical flow.
RBF level-set based fluorescence photoacoustic pharmacokinetic tomography
Authors: Gottam Omprakash , Naik Naren , Pandey Prabodh Kumar , Gambhir Sanjay
Published: September 2020

We present a fluorescence-photoacoustic pharmacokinetic tomography framework for RBF-level-set based reconstruction algorithms for pre-cancer diagnosis. Numerical results using a two-compartment pharmacokinetic model in a Gauss-Newton filter scheme validate the proposed algorithm in 2D test cases.
Multiplane Turbulence Correction in Range-compressed Holography
Authors: Farriss Wesley E. , Fienup James R.
Published: September 2020

Sharpness-maximization-based turbulence-mitigation algorithm which estimates multiple phase planes, mitigating deleterious effects of volumettic turbulence in range-compressed holographic images is developed. Aberrated fields are well corrected for turbulence (four aberrating phase screens) with an effective D/r0sw = 33.25.
Quantitative Phase Imaging using Coded Aperture Correlation Holography
Authors: Hai Nathaniel , Rosen Joseph
Published: September 2020

Quantitative phase imaging by coded aperture correlation holography is demonstrated using a modified Mach-Zehnder configuration. Coded apertures are used to increase the signal-tonoise ratio and the field of view of reconstructed phase and amplitude images. © 2020 The Authors.
Low-Photon Holographie Phase Retrieval
Authors: Barmherzig David A. , Sun Ju
Published: September 2020

A novel optimization formulation is provided for holographic phase retrieval with data subjected to Poisson shot noise in the low-photon regime. This formulation, based on regularized maximum likelihood estimation, consistently provides improved image reconstruction.
Research on The resolution of Spectral ghost imaging camera with super-Rayleigh modulator
Authors: Wang Pengwei , Tong Zhishen , Liu Zhentao , Gong Wenlin , Han Shensheng
Published: September 2020

By theoretical derivation of the imaging process, we studied the ma which influence the resolution of Spectral ghost imaging camera with super-Rayleigh modulator. Simulation results show the effectiveness of the theory, and we found that there is an optimal super-rayleigh order for practical applications.