bluuebunny/crossref_metadata_2025 huggingface dataset:
CIDADE, UM GRANDE CORPO DOENTE
Authors: Paquot Thierry
Published: September 2024

O Covid-19 lembra-nos que a saúde dos humanos é amarrada àquela da Terra, que a saúde de todos os seres vivos depende da habitabilidade do seu habitat. O que não escapou à Hippocrates, que recomendava levar adequadamente em consideração a qualidade da água, da comida e dos ventos… A morfologia física das primeiras cidades visava ventilar as ruas e garantir a todos os habitantes condições saudáveis, com habitações abertas, ensolaradas e bem cuidadas. A promiscuidade, a procura de uma especulação suculenta, as contaminações de qualquer natureza, tornaram inúmeras moradias insalubres. Numerosas epidemias devastaram cidades inteiras: a peste, o cólera, a tuberculose, sem esquecer a sífilis e o alcoolismo que se espalharam por todos os lugares, provocando verdadeiras hecatombes. A arquitetura e o urbanismo pouco se preocuparam com as doenças e a medicina ignorava que uma boa saúde exigia uma arquitetura específica e um modo de vida citadino exigente. A descoberta de novos medicamentos, inclusive os antibióticos, foi um paliativo a um modo de vida medíocre. Ora, o ser vivo só pode viver em determinado meio se este o permite, daí o interesse de tornar este último habitável, de preservá-lo de prejuízos e de cuidá-lo. Este artigo relata, em linhas gerais, as relações que se estabelecem e se desfazem no percurso dos séculos entre cidade, arquitetura e saúde.
INQUILINIZACIÓN DE LA POBLACIÓN Y FINANCIARIZACIÓN DE LA PRODUCCION URBANA
Authors: Peresini Natali , Gargantini Daniela Mariana
Published: September 2024

En las últimas décadas, las ciudades latinoamericanas han revelado transformaciones socio-espaciales significativas, evidenciando la necesidad de analizar y discutir las implicancias de los procesos de globalización, neoliberalización y financiarización sobre el hábitat y la producción del espacio urbano. Una de ellas revela el avance de la inquilinización[1] de la población, dado que actualmente la vivienda en alquiler constituye la única estrategia de acceso habitacional para un gran porcentaje de la población. Así mismo, esta modalidad presenta serias restricciones no sólo económicas sino también tipológicas y geográficas, lo que señala un desfasaje cada vez mayor entre la oferta de vivienda producida y la demanda de los hogares.
Este artículo, busca dar cuenta del avance del proceso de inquilinización de la población y de la mercantilización, valorización y financiarización de la producción urbana a partir del análisis de situación de la población y la vivienda en alquiler en un caso de estudio. Se utiliza como estrategia metodológica un abordaje inductivo-explicativo que combina métodos de análisis cuantitativos y cualitativos en base a fuentes primarias y secundarias.
La consideración y estudio de las condiciones de la población inquilina y de la producción de la vivienda en alquiler busca generar discusiones que aporten al diseño de políticas y acciones públicas para dar respuestas a las necesidades habitacionales contemporáneas.
[1] El neologismo inquilinización refiere al proceso me­diante el cual sube la proporción de ho­gares que son inquilinos o arrendatarios de sus viviendas (Palumbo, 2023).
DA PRODUÇÃO À SECURITIZAÇÃO:
Authors: Altavini de Abreu Marlon , Zanin Shimbo Lúcia
Published: September 2024

O trabalho examina as interações entre mercado privado de habitação e dinâmicas de alavancagem e endividamento de grandes incorporadoras de capital aberto entre os anos de 2011 e 2023 no Brasil, nas quais as rendas imobiliárias se articulam à capitalização de rendas financeiras.  Destaca-se a importância dessa articulação para compreender as relações entre escalas local e nacional no setor imobiliário, bem como os impactos dos fluxos de investimento financeiro em diferentes localidades da rede urbana. O foco recai sobre as estratégias espaciais da MRV&Co, a maior empresa brasileira no segmento residencial, na adoção da securitização imobiliária para financiar seus empreendimentos. O trabalho está estruturado a partir das emissões de securitização originados pela empresa entre os anos analisados. Cada um desses títulos foi minuciosamente avaliado com a intensão de mensurar informações relativas aos montantes negociáveis e aos tipos de empreendimentos que originaram as operações. Conclui-se destacando a relevância da análise das emissões de securitização da empresa para compreender as interações entre escalas local e nacional no setor imobiliário.
Ways to boost the healthcare support cohort
Authors: Foster Sam
Published: September 2024

Sam Foster, Executive Director of Professional Practice, Nursing and Midwifery Council, considers proposals to increase support worker numbers, which include taking a more co-ordinated approach and better training
BACLOFEN
Authors: Rees Sharon
Published: September 2024

In this column, Sharon Rees aims to refresh knowledge and interest in some of the commonly used drugs in a series of posts on X. This month she is talking about #baclofen
Multicore fiber based lightweight exit pupil expansion display in augmented reality
Authors: Lee Jae-Sang , Cho Seong-Hyeon , Baek Do Hun , Choi Woo June , Choi Young-Wan
Published: September 2024

In this paper, we aim to deliver image with the eye by multicore fiber from a beam projector in the pocket. Head-worn device can be lighted in weight with this approach.
Exploiting spatiotemporal priors for motion-resolved holographic imaging
Authors: Gao Yunhui , Cao Liangcai
Published: September 2024

We introduce spatiotemporally regularized inversion (STRIVER) as a general computational framework for dynamic holographic imaging. We experimentally demonstrate the use of spatiotemporal sparsity and implicit priors to obtain time-resolved holographic video of living organisms.
GPU-Parallelized Semi Heuristic Phase Compensation for Digital holographic Microscopy
Authors: Morales Johan , Obando-Vásquez Sofía , Trujillo Carlos
Published: September 2024

The Semi Heuristic Phase Compensation algorithm is fast and accurate for compensating digital holographic microscopy holograms. This work presents its parallelized version, leveraging the pyCUDA library, which effectively reduces the required execution time by threefold.
Color and Shape Measurement of Foot by Using Smartphone Sensors
Authors: Yamasaki Fuminori , Tahara Yukie , Amemiya Ayumi , Akita Shinsuke , Ogawa Keiko , Masujima Mariko , Rikihisa Naoki , Koopipat Chawan , Takahashi Masato , Tsumura Norimichi
Published: September 2024

We measured the color and shape of foot using the smartphone RGB camera and LiDAR sensors. As a result, we found that these measurements are accurate enough for practical use in nursing fields.
A novel and robust preprocessing technique for Bloodstain classification in Hyperspectral Imaging using ML
Authors: Suresh Aala , sikhakolli Sravan kumar , Muniraj Inbarasan , Deshpande Anuj , Elumalai Karthikeyan , chinnadurai Sunil
Published: September 2024

In crime investigations, rapid bloodstain identification is crucial. Hyperspectral imaging (HSI) offers a non-destructive solution. Our investigation into preprocessing techniques to improve classification accuracy and reduce computation time reveals that the best options are max normalization and mean filter.
Assessment of processing time and measurement accuracy of different phase compensation methods in Quantitative Phase Imaging via Digital Holographic Microscopy applied to Biological Specimens Holographic Microscopy
Authors: Obando-Vásquez Sofía , Doblas Ana , Trujillo Carlos
Published: September 2024

Six different methods for phase compensation in Digital Holographic Microscopy are compared using a calibrated test target and a Toxocara canis larva sample regarding processing time, measurement accuracy, and usefulness in biological imaging.
Snapshot Quantitative Phase Imaging in Multi-Perspective Microscopy
Authors: Fernández Ariel , Llaguno Juan M. , Silva Alejandro , Alonso Julia R.
Published: September 2024

Quantitative phase microscopy using the Transport of Intensity Equation can be achieved in real-time by exploiting the redundancy derived from multi-perspective sensing of a sample. Validation experiments for phase retrieval from differently focused sub-aperture images are presented.
Learning-based model using unpaired datasets for super-resolution confocal microscopy
Authors: Trujillo Carlos , Thompson Lauren , Skalli Omar , Doblas Ana
Published: September 2024

One of the major drawbacks of confocal microscopy is its limited spatial resolution. This work assesses the performance of an unpaired learning-based model to provide confocal images with improved resolution.
Structured Illumination Digital Holographic Microscopy via two integrated Mach-Zehnder interferometers
Authors: Obando-Vásquez Sofía , Restrepo René , Trujillo Carlos , Doblas Ana
Published: September 2024

We propose two Match-Zehnder interferometers coupled to create a structured illumination digital holographic microscope with tunable modulation frequency capability, expanding the system's numerical aperture regardless of the microscope objective lens used.
SLICE: Combined Super Linear Iterative Clustering and Earth Mover’s Distance for Brain Tumour Classification
Authors: Neelamraju Pavan Mohan , Muniraj Inbarasan
Published: September 2024

We demonstrate that the combination of Super Linear Iterative Clustering and Earth Mover’s Distance efficiently segments tumours from the MRI dataset. Despite using a smaller training dataset our approach achieves an accuracy of 86.2%.
Cholangiocarcinoma Classification Using Semi-Supervised Learning Approach
Authors: Sikhakolli Sravan Kumar , Aala Suresh , Chinnadurai Sunil , Muniraj Inbarasan , Deshpande Anuj
Published: September 2024

This article introduces a novel semi-supervised learning method for Cholangiocarcinoma detection using inherent statistical parameters of the image on the multidimensional Choledochal dataset. Results closely match the pathologist’s annotations, validated by image similarity indices.
Machine learning assisted single pixel imaging for weak light detection
Authors: Mizutani Yasuhiro , Kataoka Shoma , Uenohara Tsutomu , Takaya Yasuhiro , Matoba Osamu
Published: September 2024

Single-pixel imaging, which allows imaging with a single-pixel detector and correlation method, can be accelerated by combining machine learning. In addition, the estimation accuracy is improved by using the predictive uncertainty by machine learning.
A Six-Core Microstructured Fiber for Sensing Applications
Authors: Agarwal Akshat , Mittal Shweta , Punia Sushma , Saharia Ankur , Bourdine Anton V. , Morozov Oleg G. , Meshkov Ivan K. , Ismail Yaseera , Singh Ghanshyam , Tiwari Manish
Published: September 2024

A surface plasmon resonance biosensor design is presented, comprising of gold - coated six-core microstructured fiber. The designed sensor exhibits phase matching characteristics for a wider refractive index range of 1.37 - 1.41.
Vibration Signal Analysis of Fiber Optic Seismometers for Intrusion Recognition in Subway Tunnels
Authors: Zhang Wentao , Zhao Guisheng , Huang Wenzhu , Li Fang
Published: September 2024

Time-frequency analysis is used in recognition of subway tunnel vibration signals. The results show that the feature extracted from the energy distribution can be used in identifying the drilling events.
Optimized Design of Thick Holography Based on Deep Learning and Fourier Modal Method
Authors: Chen Nanxing , Cao Yubin , Meng Jiandong , Li Jianyi , Yang Qingbo , Cao Kairui
Published: September 2024

This paper introduces a deep neural network architecture, which is inspired by the Fourier modal method, facilitating layered iterative processing of thick holography to achieve high diffraction efficiency.
Simple Fluorescent Sensors Based on ZnS-Doped Mn Capped Chitosan Nanomaterials to Detect Ampicillin
Authors: Nguyen Son Hai , Nguyen Van-Nhat , Tran Mai Thi
Published: September 2024

The paper introduces an optical biosensor based on ZnS-doped Mn capped chitosan for detecting ampicillin. The sensor demonstrates high sensitivity from 13.1 to 72.2 µM and has a detection limit of 5.42 µM.
Thermal Analysis of Photodetectors in Steady-State
Authors: Anjum Ishraq Md , Hastings Alexander S. , Tulchinsky David A. , Williams Keith J. , Menyuk Curtis R. , Simsek Ergun
Published: September 2024

This study introduces a method to approximate temperature distribution in steady-state photodetectors under optical excitation. Findings underscore the influence of temperature on key attributes, revealing overestimation with constant temperature assumptions. Insights aid in optimizing photodetector performance.
Synchronous angio-lymphography based on speckle spectrum contrast OCT
Authors: Hu Yudan , Deng Lijun
Published: September 2024

A speckle spectrum contrast optical coherence tomography (SSC-OCT) technique is proposed for achieving synchronous imaging of blood vessels and lymphatic vessels, solving misidentification of blood vessel walls, and detecting tumor lymphangiectasia.
An implemented fluorescence imaging system for real-time monitoring of colorectal cancer location
Authors: Shin Yoo-kyoung , Park You-rim , Eom Joo Beom
Published: September 2024

We report a method for real-time monitoring of colorectal cancer, lymph node metastasis, and tumor growth inhibition of colorectal cancer cells through photodynamic therapy (PDT) using a near-infrared fluorescence diagnostic therapeutic system and fucoidan-based therapeutics. In vitro and in vivo experiments were performed to confirm the effectiveness of the manufactured system and the developed CFN-gel, which has good accumulation efficiency in cancer cells. For comparison of the fabricated CFN-gels, commercial chlorine e6 (Ce6) and 5-aminolevulinic acid (5-ALA) were used. The effectiveness of cancer diagnosis and treatment was confirmed through fluorescence imaging and PDT experiments.
Random illumination coherent anti-Stokes Raman scattering microscopy (RIM-CARS)
Authors: Fantuzzi Eric M. , Heuke Sandro , Labouesse Simon , Gudavičius Dominykas , Bartels Randy , Sentenac Anne , Rigneault Hervé
Published: September 2024

Coherent non-linear wide-field imaging reduces phototoxicity compared to focused approaches and holds the potential for the highest possible image acquisition rates, but misses optical sectioning. Here, we reintroduce optical sectioning using fast changing speckle illuminations.
Two-Dimensional Walsh Code Ordering of the Hadamard Basis for Single-Pixel Imaging with Compressive Sensing
Authors: Pitts O. J. , Flueraru C.
Published: September 2024

An improved Hadamard measurement basis sorting is proposed and evaluated for single pixel imaging with a low measurement ratio, based on a two-dimensional evaluation of sign changes using the Walsh code.
Deep learning-based automated defect detection in digital holographic microscopy
Authors: Pandey Dhruvam , Narayan Subrahmanya Keremane , Gannavarpu Rajshekhar
Published: September 2024

The article introduces a defect identification method using digital holographic microscopy and deep learning. It utilizes wrapped phase from holograms to generate binary defect maps trained for high noise levels. Experimental results validate its efficacy.
A Blind Deconvolution Approach for Wide-Field Microscopy
Authors: Niknam Farhad , Agarwal Krishna
Published: September 2024

We present a blind deconvolution method for 3D heterogeneous samples. The deconvolution is performed with the PSFs independently optimized at different regions such that the heterogeneity of the sample can be incorporated.
Dynamic deflectometry for real-time 3D surface measurements
Authors: Ghim Young-Sik , Nguyen Manh The , Rhee Hyug-Gyo
Published: September 2024

As a summary of the authors’ previous paper of Ref 1, we describe a simple and high speed deflectometry for measuring specular surfaces accurately and efficiently. Conventional deflectometry usually needs very complicated system calibration, time-consuming methods, which are not suitable for industrial in-line inspection. In this paper, we propose a simple, efficient, and robust one-shot phase retrieval method for measuring a surface phase. Using only a derivation operation for the high carrier-frequency composite pattern, we can retrieve the surface phase with high processing speed. Comparisons with the experimental results from other conventional methods confirmed that our one-shot method can measure 3D surfaces with high accuracy and high speed.
Design and Characterization of Flattop Beam Shapes through Volume Holographic Grating for Confocal Imaging
Authors: Luo Yuan , Suresh Surag Athippillil , Yeh J Andrew
Published: September 2024

Beam shapes with uniform intensity all over the diameter (flattop) have been designed, recorded, and reconstructed through photopolymer (PQ-PMMA) based volume holographic (VH) optical element with ISO standards for confocal imaging of fluorescent samples.
Eclipse Turbulence Evaluation and Sensor Testing (eTEST)
Authors: Whiteley Matthew R. , Magee Eric , Schmidt Jason , Diskin Yakov
Published: September 2024

Turbulence and correlated weather measurements were made during the total solar eclipse across the continental United States on April 8, 2024. Sensor terminals were installed along the path of totality and varying percentages of partial eclipse, quantifying the impact of the eclipse conditions on weather-driven
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Randomness and Blur offer Polarimetric Compressed Sensing with Mostly-air Films
Authors: Feng J. , Perry A.J. , Weng X. , Vuong L.T.
Published: September 2024

Established methods of sensing light polarization and beam pointing entail a reduction in resolution. Here, we demonstrate that this trade-off can be significantly circumvented with random, air-filled, meso-ordered, diffractive encoders and temporal blur.
Computational Hyperspectral Single-pixel Camera based on Liquid Crystal Metasurface
Authors: Nie Jiewen , Chen Tao , Jiang Shan , Dai Peng , Chu Daping , Yang Haining
Published: September 2024

This paper demonstrated a hyperspectral single-pixel imaging camera based on the tunable meta-optics. The demonstration delivered 64×64 hyperspectral 2D imaging with a spectral resolution of 0.5 nm between 1500 nm – 1630 nm.
Combining line confocal and scanning light field microscopy to achieve high-resolution observations in deep tissues
Authors: Lu Zhi , Wu Jiamin , Dai Qionghai
Published: September 2024

We combine line confocal scheme and scanning light-field microscopy (sLFM) to develop a confocal scanning light-field microscopy (csLFM). By introducing simple modifications in the illumination path, csLFM enables high-resolution imaging with reduction in background.
Small displacements sensing via enhanced temporal measurement
Authors: Liu Shouju , Yang Kang , Wang Chao
Published: September 2024

This paper proposed a novel precise measurement of small displacement by MMF. It not only demonstrates the potential of multimode fibers in high-precision measurement fields but also provides important technical measurement in optical systems.
Hybrid Illumination Angle Calibration for Fourier Ptychography Microscope
Authors: Liang Chen , Feng Fan , Xu Pingyong , Mao Heng
Published: September 2024

We proposed a hybrid calibration method for quantitative correction of illumination angle misalignments in Fourier ptychography microscope. This method combines system parameter pre-calibration with online sample-include calibration to ensure high-quality results.
Adaptive structured light for inspecting objects with curvature
Authors: Cho Hanjin , Lee Eunbi , Lee Siwoo , Lee Juhyun , Chun Chen , Jeong Yoonchan , Lee Byoungho
Published: September 2024

In the surface inspection, it is necessary to irradiate light from various angles to improve visibility. In this paper, we propose a method that uses structured light to quickly irradiate the entire surface of objects to be inspected at various angles and to optimize the distortion of the structured light caused by the object's curvature.
Transmission-loss characteristics of microfiber in liquids for multimode interference sensors
Authors: Kihara Mitsuru , Akita Yuma , Abe Naoaki , Soeda Ryoki
Published: September 2024

Experimental results indicate that microfibers can be effective as multimode interference sensors for measuring refractive indices (RIs) below 1.45. The RI is linearly proportional to measured wavelength shift, and the slope is 901.5 nm/RIU.
Quantitative phase imaging and machine learning for spermatozoa analysis
Authors: Butola Ankit , Hellberg Sigurd , Nystad Mona , Agarwal Krishna
Published: September 2024

Conventional methods of assessing sperm quality are based on qualitative analysis of semen. In this paper, we combined time-lapse quantitative phase imaging and deep learning for the classification of healthy and unhealthy sperm cells.
Photoacoustic gas spectroscopy with custom quartz tuning forks: on the path to industrialization
Authors: Duquesnoy M. , Melkonian J.-M. , Mammez M.-H. , Levy R. , Aoust G. , Raybaut M.
Published: September 2024

We present a 10-year retrospective overview of our work on photoacoustic spectroscopy, from the first analytical models to sensor industrialization, as well as our latest results.
Proteus effect in vertical jumping wearing a head-mounted display
Authors: Kandori Ayumu , Takahashi Masato , Koopipat Chawan , Tsumura Norimichi
Published: September 2024

We investigated the influence of the Proteus effect on physical activity. We found that obese avatar recorded the lower height about the vertical jump than normal one.
Design of a SiC Deformable Mirror for High Power Laser Application
Authors: Kang Pilseong , Lee Jaehyun , Rhee Hyug-Gyo
Published: September 2024

For high power laser application, two types of SiC deformable mirrors with different actuator array shapes are designed and studied. It is shown that the they perform similarly and achieve the design goals.
Ultra-Violet Reflective Fourier Ptychographic Microscopy Using a Parabolic Mirror
Authors: Pham Van Huan , Chon Byong Hyuk , Ahn Hee Kyung
Published: September 2024

Here, we propose a reflective FPM using ultra-violet LEDs. To show the resolution improvement, a reflective FPM using 365 nm ultra-violet LEDs is demonstrated by resolving 173 nm half-pitch patterns in a USAF 1951 target.
Alternative dual-SLM optimization for polarimetric calibrated holographic display
Authors: Sui Xiaomeng , Cao Liangcai , Chu Daping
Published: September 2024

Dual-SLM computer-generated holography can suppress phase aberrations and faithfully reconstruct initial objects. Herein, an alternative strategy of optimization for dual-SLM holographic display is proposed, allowing for a further improved reconstructing quality with polarimetric calibration.
Development of the Light-Field camera with switchable micro-lens array for utilizing UAM application
Authors: Lee Tae-Hyun , Park Min-Kyu , Lim Sungjin , Lim Ki-Dong , Joo Kyung-Il
Published: September 2024

We developed a light-field (LF) camera which can switch between 2D and 3D capturing mode. LF camera was developed with switchable micro-lens array (MLA) according to the polarization state of incident light.
Optical characteristic analysis system based on directional illumination polarized imaging for next-generation optical elements
Authors: Choo Jung Hun , Lee Tae-Hyun , Lim Ki-Dong , Kim Jiyeon , Joo Kyung-Il , Park Min-Kyu , Lim Sungjin
Published: September 2024

In this paper, we propose optical characteristic analysis system based on directional illumination polarized imaging for meta lenses with large aperture. The proposed analysis system for meta lenses with large aperture are implemented by combining polarization optics and the directional illumination imaging technique of ptychography, and it can be obtained the geometric phase map of meta lens with wide FOV and high-resolution. In addition, optical properties such as Zernike polynomial aberration, color aberration, and optical distortion are calculated based on the geometric phase map.
CIAO, a versatile and simple adaptive optics system for astronomy and satellite communication
Authors: Dovillaire Guillaume , Leveder Cora , Grand-Chavin Patrick
Published: September 2024

Imagine Optic has developed a simple, versatile and affordable adaptive optics system dedicated to telescope in the range 0.3 to 1m meter diameter. We present the architecture of the existing prototype as well as the first experimental results.
Quantum-Enhanced Dual-Comb Spectroscopy Beyond the Shot Noise Limit
Authors: Herman Daniel I. , Walsh Mathieu , Kreider Molly Kate , Lordi Noah , Tsao Eugene J. , Lind Alexander J. , Heyrich Matthew , Combes Joshua , Genest Jérôme , Diddams Scott A.
Published: September 2024

Soliton squeezing suppresses the amplitude noise of a frequency comb by >3 dB. Dual-comb interferometry enables mode-resolved spectroscopy of H2S with signal-to-noise ratio ∼2.6 dB beyond the shot noise limit.
Singleshot multispectral wavefront sensing
Authors: Blochet Baptiste , Lebas Nathalie , Papadopoulos Dimitris , Guillon Marc
Published: September 2024

We demonstrate a speckle-based singleshot multispectral wavefront sensor. The instrument is quantitative and was applied to characterize a single pulse from a high-power laser facility.
Simulation of LQG control with Pyramid wavefront Sensor: preparation of PAPYRUS implementation
Authors: Levraud Nicolas , Galland Nicolas , Raynaud Henri-françois , Fétick Romain , Dray Jonathan , Team PAPYRUS , Clénet Yann , Kulcsár Caroline
Published: September 2024

The PAPYRUS demonstrator is designed to test Pyramid WFSs and methods for SCAO before the advent of ELT. An LQG controller should be soon implemented. We present here first simulation results preparing on-sky implementation.
High-resolution Space-variant Shack–Hartmann Wavefront Reconstruction
Authors: Feng Fan , Liang Chen
Published: September 2024

Space-variant wavefront reconstruction plays a crucial role in large field-of-view imaging. Instead of using affine transformation, displacement fields of subimages within Shack–Hartmann sensor are evaluated using polynomial model, resulting in improved resolution for space-variant functions.
Selective modal excitation of a nanophotonic cavity with a programmable phase mask
Authors: Rouxel A. , Monmayrant A. , Calvez S. , Gauthier-Lafaye O.
Published: September 2024

Selective spatial mode excitation of a grating-coupled multimode micro-cavity is achieved using an incident beam shaped with a programmable phase mask. Real-time control of the phase mask coupled to differential evolution algorithm allows access to individual modes with high selectivity up to the tenth order.
Focal Plane Intensity-Based Adaptive Optics with Low-Resolution Image Acquisition
Authors: Pitts O. J. , Pashazanoosi M. , Ali I. A. , Flueraru C. , Orth A. , Hranilovic S.
Published: September 2024

An adaptive optics method is proposed and numerically evaluated based on sequential optimization of focal plane pixel phase values using a single-point coupled power measurement, starting from a low-resolution focal plane image.
Adaptive microscope methods with embedded intelligence
Authors: Hu Qi , Atilgan Huriye , Wang Jingyu , Booth Martin J.
Published: September 2024

Adaptive optics (AO) was shown to improve microscope imaging quality. However, issues like prolonged sample exposures are often associated with sensorless AO implementation. We present an AO solution with embedded intelligence to achieve outstanding performance.
Machine Learning Estimate the Optical Properties of Tissue
Authors: Zhang Yihan , Deng Bowen , Wright Amanda J. , Somekh Michael G. , Pounds Michael P. , Parkes Andrew J.
Published: September 2024

A method to extract scattering coefficients from random media is presented. A deep learning network is trained from Monte Carlo simulations. Using angular and spatial information together greatly improved robustness and accuracy over previous approaches. (tel: +44 7536964914, e-mail: eexyz67@nottingham.ac.uk).
Self-interference digital holography with computational adaptive optics
Authors: Li Shaoheng , Kner Peter
Published: September 2024

Self-interference Digital Holography (SIDH) based single molecule localization microscopy has the potential to perform large volume 3D super-resolution imaging without mechanical refocusing of the sample. This work presents a fast, guide-star-free computational Adaptive Optics method for SIDH.
Physically Inspired Scattering Correction for Non-Linear Excitation Imaging of Tissues.
Authors: Chirico Giuseppe , Marini Mario , Panzeri Davide , Presotto Luca , Sironi Laura , Bouzin Margaux , D’Alfonso Laura , Collini Maddalena
Published: September 2024

In nonlinear optical microscopy through skin, the laser energy is attenuated, and the spot size increases. Holographic corrections work only on small isoplanatic patches. We test Physically-Inspired-Neural-Networks for scattering correction, enhancing speed and overcoming non-isoplanatism.
Multiple scattering fluorescence conjugation using a wavefront sensor
Authors: Wu Tengfei , Zhang Yixuan , Blochet Baptiste , Arjmand Payvand , Berto Pascal , Guillon Marc
Published: September 2024

We demonstrate the ability to perform single-shot digital optical phase conjugation from a Stokes shifted fluorescent incoherent guide stars hidden behind a forward scattering sample with a high-resolution wavefront sensor.
Modeling of aberrations and spatial coherence for retinal imaging with full-field optical coherence tomography
Authors: Loukili Inès , Mugnier Laurent , Michau Vincent , Grieve Kate , Mecê Pedro , Meimon Serge
Published: September 2024

We propose a condensed wave-optics model to simultaneously study the influence of aberrations and spatial coherence of the illumination on the resolution of a full-field optical coherence tomography imaging system.
Influence of Source Coherence and Retinal Eccentricity on the Optoretinogram, a Non-Invasive Means of Assessing the Photoreceptors Functionality
Authors: Granier Julia , Lassoued Ayoub , Gofas-Salas Elena , Grieve Kate
Published: September 2024

We record optoretinogram signals with an Adaptive Optics Scanning Light Ophthalmoscope on living human retina and we investigate the influence of the coherence of the source and of the retinal eccentricity on the signal obtained.
Adaptive RESOLFT microscopy
Authors: Lin Ruizhe , Testa Ilaria
Published: September 2024

By integrating confocal scanning, structured illumination, and adaptive optics, the adaptive RESOLFT microscopy overcomes performance limits caused by sample-induced optical aberrations, enabling super-resolution imaging at depth in complex live tissues.
Adaptive Optical Quantitative Phase Imaging of Living Cells Based on Fourier Ptychographic Microscopy
Authors: Sun Jiasong , Shu Yefeng , Zuo Chao
Published: September 2024

In this report, we present an adaptive optical Quantitative Phase Imaging (QPI) method based on annular illumination Fourier Ptychographic Microscopy (FPM). Using only six low-resolution images captured at six different illumination angles that match the objective, we're able to recover high-resolution quantitative phase images and characterize the aberrations in real time.
Adaptive optics in two-photon fluorescence microscopy for functional neuroimaging
Authors: Guillaume-Manca A. , Imperato S. , Léger J-F. , Mercier M. , Harms F. , Bourdieu L. , Fragola A.
Published: September 2024

Integrating extended-source adaptive optics into a two-photon microscope allows to measure and correct aberrations in strongly scattering conditions, enhancing resolution and intensity for imaging mouse fixed brain slices and live cortex.
Direct Zernike Coefficient Prediction and Correction from Aberrated Images using Deep Learning
Authors: Kok Yong , Bentley Alexander , Parkes Andrew , Somekh Michael , Wright Amanda J. , Pound Michael
Published: September 2024

Optical imaging quality is severely degraded by system and sample induced aberrations. This study demonstrates the application of deep learning to characterise and correct optical aberrations by reconstructing the Zernike coefficients from phase-diverse optical images.
AO-FIO for fixational eye movements tracking and drusen visualization in presymptomatic AMD
Authors: Murari J. , Gautier J. , Daout J. , Krafft L. , Senée P. , Mecê P. , Grieve K. , Seiple W. , Meimon S. , Sheynikhovich D. , Paques M. , Arleo A.
Published: September 2024

Using Adaptive Optics Flood-Illumination Ophthalmoscopy, we showed that small asymptomatic foveal drusen had a significant effect on fixation stability. Particularly, the closer the drusen were from the fovea center, the larger the microsaccades.
Stimulated Brillouin scattering flow cytometry
Authors: Rosvold Jake R. , Zanini Giulia , Handler Chenchen , Frank Eric , Li Jiarui , Vitolo Michele I. , Martin Stuart S. , Scarcelli Giuliano
Published: September 2024

We present the use of stimulated Brillouin scattering spectroscopy to achieve rapid measurements of cell biomechanics in a flow cytometer setup. Specifically, our stimulated Brillouin scattering flow cytometry can acquire at a rate of 200 Hz, with a spectral acquisition time of 5 ms, which marks a 10x improvement compared to previous demonstrations of spontaneous Brillouin scattering flow cytometry. We experimentally validate our stimulated Brillouin scattering flow cytometer by measuring cell populations of normal breast epithelial cells and metastatic breast epithelial cancer cells.
Generalizing Learning-Based Lensless Image Reconstruction to Mask Pattern Changes
Authors: Bezzam Eric , Vetterli Martin
Published: September 2024

Previous work has not shown if learned components for lensless image reconstruction can generalize to physical modifications. In this work, we train a reconstruction approach on an open-sourced, multi-mask dataset, and demonstrate improved generalizability.
Experimental Demonstration of a Quantum-Optimal Direct Imaging Coronagraph
Authors: Deshler Nico , Ozer Itay , Ashok Amit , Guha Saikat
Published: September 2024

We implement a direct imaging coronagraph that rejects all light from an on-axis star using a double-pass spatial mode sorter. Our experimental setup can precisely localize exoplanets below the diffraction limit at 1000:1 star-planet contrast.
Enhanced Single Pixel Imaging in Atmospheric Turbulence
Authors: Cheng Yin , Liao Yusen , Zhou Shuaijun , Chen Jingan , Lam E dmund Y. , Ke Jun
Published: September 2024

The imaging quality of single pixel imaging in atmospheric turbulence is enhanced by combining a deep learning model with classical methods. The effectiveness of this method was confirmed by optical experiments.
Design of Phase Plate for Far Field super-Rayleigh Speckle in GISC Spectral Camera
Authors: Wu Jianrong , Wang Pengwei , Han Shensheng
Published: September 2024

A far field super-Rayleigh speckle modulation scheme for GISC spectral camera is proposed. The design and fabrication of the phase plate generating super Rayleigh speckles are carried out. Experimentally the contrast is basically greater than 1 from 550nm to 800nm, and reaches the maximum of 1.8 at 600nm.
3D Active Structured Illumination Compressive Sensing using Si-Photonic Optical Phased Arrays
Authors: Philbrick Channing P. , Feldkhun Daniel , Dostart Nathan , Wagner Kelvin H. , Dao Howard , Popović Miloš
Published: September 2024

We demonstrate an 8×8 array of addressable 2D wavelength-steered Si-photonic serpentine optical phased arrays producing multiple spatiospectrally non-redundant arrays of emitters for multibeam interferometric 3D imaging via an active structured illumination compressive sensing technique.
Deep-learning-enabled Temporally Super-resolved Multiplexed Fringe Projection Profilometry: High-speed kHz 3D Imaging with Low-speed Camera
Authors: Chen Wenwu , Feng Shijie , Zuo Chao
Published: September 2024

Deep learning-enabled multiplexed fringe projection profilometry allows to achieve high-resolution and high-speed 3D imaging at near-one-order of magnitude-higher 3D frame rate with conventional low-speed cameras. Then the method is demonstrated by measuring a transient scene of bullet fired from a toy gun, at 1,080 Hz using 120 Hz cameras.
Twin-Airy Point Spread Function for 3D Super Resolution Microscopy
Authors: Thompson Conall , Handley Michael , Olesker Daniel , Taylor Jonathan M. , Harvey Andrew R.
Published: September 2024

We demonstrate how a Twin-Airy Point Spread Function can be employed in super-resolution microscopy to combine state-of-the-art 3D localisation precision and depth of field with the potential for an order-of-magnitude increase in emitter densities.
Super-resolution Imaging Based on Compound Eye Camera Arrays
Authors: Wang Bowen , Wang Minqi , Zuo Chao
Published: September 2024

We propose a novel computational super-resolution imaging technique, coded aperture super-resolution imaging based on a compound eye camera array, which is to reverse the aliasing information by introducing four different coded modulations.
Scatterguiding: Energy Transport with Diffusive Waveguides
Authors: Mitchell Kevin J. , Gradauskas Vytautas , Radford Jack , Starshynov Ilya , Nerenberg Samuel , Wright Ewan M , Faccio Daniele
Published: September 2024

We demonstrate the diffusion equation, describing the propagation of photon density modes in strongly scattering materials, can accommodate the existence of guided modes to enhance sensing inside scattering media like fog, snow and human tissue.
Pupil Engineering enhanced Speckle Granularity Probe
Authors: Zhang Qihang , Yue Haoyu , Cao Liangcai , Barbastathis George
Published: September 2024

We utilized the pupil engineering method to enhance contrast of the sidelobe region in speckle correlations. Thus, required data collection for the speckle granularity probe is suppressed down to single frame.
Spectrum synthesis with computational neuromorphic imaging
Authors: Chen Rongzhou , Zhu Shuo , Wang Chutian , Lam Edmund Y.
Published: September 2024

We propose a method for spectrum synthesis via computational neuromorphic imaging (CNI), employing stochastic variational inference to extract spectral profiles from dynamic light-sample interactions. It provides new insights into biological analysis and CNI applications.
Filter-free polarimetric digital holography with light-emitting diode and no 4f optical system
Authors: Tahara Tatsuki
Published: September 2024

I have proposed filter-free polarimetric incoherent holography (Opt. Lett. 48 (2023) 3881.) in which 4f optical system was introduced. This time I propose filter-free polarimetric holography techniques with daily-use light and no 4f optical system.
Large range interferometric optical profiling using encoded search focal scan
Authors: Vilar Narcís , Artigas Roger , Duocastella Martí , Carles Guillem
Published: September 2024

We implement Encoded Search Focal Scan, a technique to reconstruct microscopic height maps of surfaces, on an interferometric microscope, to demonstrate ultra-fast topographic imaging at high resolution and precision with extended axial measurement ranges.
Structured Illumination EUV Imaging
Authors: Licht L. , Eschen W. , Liu C. , Penagos Molina D. S. , Steinert M. , Siefke T. , Pertsch T. , Limpert J. , Rothhardt J.
Published: September 2024

We present table-top EUV imaging at 13.5 nm. Using an EUV phase diffusor for generating a highly structured illumination, improves the image quality and resolution in ptychography and opens new avenues for single-shot EUV imaging.
Efficient hard X-ray projection imaging at a sub-10 nm resolution
Authors: Zhang Wenhui , Dresselhaus J. Lukas , Fleckenstein Holger , Prasciolu Mauro , Zakharova Margarita , Ivanov Nikolay , Li Chufeng , Yefanov Oleksandr , Li Tang , Egorov Dmitry , De Gennaro Aquino Ivan , Middendorf Philipp , Hagemann Johannes , Bajt Saša , Chapman Henry N.
Published: September 2024

A noise-robust sub-10 nanometer imaging resolution from a Siemens star sample was achieved, by ptychographically reconstructing projection holograms recorded at an effective magnification of more than 11,800 in the regime of hard X-rays.
Coded aperture strategies for high-speed video sensing
Authors: Guzmán Felipe , Vera Esteban
Published: September 2024

This work discusses innovative high-speed imaging methods, merging hard-ware and algorithms in computational imaging. It focuses on techniques like rolling shutter, and coded aperture compressive temporal imaging for efficient data capture and high-quality compression.
Single-shot efficient transient imaging with optimal coded shutter based on time-compressive CMOS image sensor
Authors: Yoshida Michitaka , Hayashi Daisuke , De Xing Lioe , Yasutomi Keita , Kawahito Shoji , Kagawa Keiichiro , Nagahara Hajime
Published: September 2024

We propose an efficient light-speed transient imaging system with a dedicated charge-domain time compressive CMOS image sensor. The reconstruction neural network and the spatio-temporal coded shutter applied to the sensor are simultaneously optimized.
High throughput fluorescence lifetime microscope based on single pixel camera
Authors: Ghezzi Alberto , Avanzi Elisabetta , Gandolfi Valerio , Garcia-Fleitas Ariel , Di Sieno Laura , Mora Alberto Dalla , Santabarbara Stefano , Bassi Andrea , Valentini Gianluca , Farina Andrea , D’Andrea Cosimo
Published: September 2024

A system for high throughput fluorescence lifetime imaging based on single-pixel camera and compressed-sensing is presented. Moreover, a fast fitting algorithm for multidimensional data set is proposed and experimentally validated.
3D Image Restoration using Implicit Neural Representations for Brightfield and Widefield Fluorescence Microscopy
Authors: Xu Chenyu , Jin Zhouyu , Xiong Bo , Zhou You , Cao Xun
Published: September 2024

3D stacks captured by conventional brightfield and widefield fluorescence microscopes suffer from inter-plane crosstalk, hindering high-quality 3D imaging. We present a physics-informed self-supervised machine learning method for 3D image stack restoration.
Quantization of Neural Network for Computing Complex Holograms
Authors: Endo Yutaka , Oikawa Minoru , Wilkinson Timothy D. , Shimobaba Tomoyoshi , Ito Tomoyoshi
Published: September 2024

This study demonstrates quantizing of a neural network for computing complex holograms to reduce the model size for computationally limited platforms. We evaluate the model size and output hologram quality, comparing quantized and non-quantized models.
Non-destructive surface defect metrology using deep learning and diffraction phase microscopy
Authors: Narayan Subrahmanya Keremane , Pandey Dhruvam , Gannavarpu Rajshekhar
Published: September 2024

We present an approach that utilizes a deep learning network to compute phase gradient for defect identification. The efficacy of this method is showcased through the analysis of experimentally acquired noisy interferograms.
Image Reconstruction in Structured Illumination Microscopy Using The Plug-and-Play Methods
Authors: Atibi Arash , Alqahtani Abdulaziz , Preza Chrysanthe
Published: September 2024

We investigated the use of Plug-and-Play methods in structured illumination microscopy using a 2D-processing approach and information from multiple 2D defocused PSFs. The achieved resolution in results from noisy simulation is better than that obtained with traditional 3D processing.
Method for In-line Holographic Microscopy Reconstruction of Low Signal-to-noise Ratio Holograms
Authors: Rogalski Mikołaj , Arcab Piotr , Trusiak Maciej
Published: September 2024

This work presents an in-line holographic reconstruction method for low signal-to-noise ratio data. Algorithm is positively validated in terms of shot noise suppression, twin image minimization and high lateral resolution.
Multiplexed label-free high-throughput holographic lensless method for live cell migration sensing
Authors: Trusiak Maciej , Arcab Piotr , Rogalski Mikołaj , Rogujski Piotr , Stanaszek Luiza
Published: September 2024

Cell migration plays crucial role in regeneration, morphogenesis and cancer metastasis. We present a novel hardware-software method for multiplexed (3-cameras) holographic lensless label-free full-culture live-cell quantitative migration sensing with single-cell sensitivity and sub-cellular motion precision.
Generation of High-order Conveyor Beams
Authors: Shi Minghui , Dong Xin , He Hongsen , Wong Kenneth Kin-Yip
Published: September 2024

A class of high-order conveyor beams is simulated and demonstrated. By virtue of its ring-like profile, it can work as a versatile optical conveyor belt to manipulate and rotate particles in axial direction.
Twin-image Free Single-shot Phase Retrieval using Vortex Phase Illumination
Authors: Kularia Muskan , Banerjee Manidipa , Khare Kedar
Published: September 2024

Twin image stagnation has been a major challenge in single-shot Fourier phase retrieval. Using our simulation studies with the hybrid input-output algorithm, we show that a charge-1 vortex phase illumination eliminates this problem.
Non-interferometric intensity diffraction tomography for label-free 3D microscopy
Authors: Zhou Shun , Sun Jiasong , Chen Qian , Zuo Chao
Published: September 2024

Non-interferometric optical diffraction tomography techniques have drawn increasing attention for their system simplicity, speckle-free imaging quality, and compatibility with existing microscopes. We recently introduced a series of intensity diffraction tomography techniques based on illumination angular scanning or axial scanning of samples.
Label-free dynamic 3D imaging of live-cell based on Fourier ptychographic diffraction tomography
Authors: Zhou Shun , Shen Qian , Chen Qian , Zuo Chao
Published: September 2024

We realize high-resolution label-free dynamic 3D live-cell imaging in a non-interferometric manner with the proposed illumination coded Fourier ptychographic diffraction tomography. The dynamic tomographic imaging of PLC cells validates the capabilities of this technique in monitoring and analyzing various dynamic biological processes.
Near-field multi-slice optical ptychography
Authors: Maiden Andrew. M. , Hu Ziyang , Zhang Yiqian
Published: September 2024

We show how near-field multi-slice ptychography can be implemented on an optical microscope to realize computational sectioning of thick samples. We use the method to section a 90 µm-thick sample into 40 slices.
Dynamic Fourier Ptychography via Space-Time Optimization
Authors: Sun Ming , Wang Kunyi , Mishra Yogeshwar Nath , Qiu Simeng , Heidrich Wolfgang
Published: September 2024

We introduce a dynamic Fourier ptychography (FP) technique via a spacetime framework, jointly recovering object states and deformation fields for detailed observation of rapid, complex behaviors in living cells.
High-speed, high-throughput Fourier ptychographic microscopy with hybrid coherent/incoherent illumination
Authors: Fan Yao , Sun Jiasong , Zuo Chao
Published: September 2024

We propose an efficient synthetic aperture scheme for FPM, termed ESA-FPM, which employs both coherent and incoherent illuminations to maximize the efficiency of data utilization and achieves an imaging bandwidth of
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Multiplexing Scalability in Ptychography: Information Oversampling and Beam Overlap
Authors: Penagos Molina Daniel S. , Eschen Wilhelm , Liu Chang , Limpert Jens , Rothhardt Jan
Published: September 2024

We present a detailed numerical and experimental analysis on spatial multiplexing capabilities in ptychography for boosting performance. By considering beam overlap and oversampling ratio, a more than 10-fold scale in performance can be achieved.
Automatic Differentiation-Assisted Fourier Ptychographic Microscopy
Authors: Wu Yang , Tan Chao , Wang Jun , Chen Ni
Published: September 2024

Fourier ptychographic microscopy (FPM) enables wide-field-of-view and high-resolution imaging. However, the precise offset should align LED array before recovering, otherwise it causes artifacts. To tackle it, we present a differentiable FPM technique to handle misalignments.
Non-interferometric quantitative phase microscopy based on Kramers-Kronig relations for large phase objects
Authors: Shen Qian , Sun Jiasong , Chen Qian , Zuo Chao
Published: September 2024

High-speed, high-accuracy phase retrieval of large-phase objects remains a challenge. We propose a non-interferometric quantitative phase imaging technique beyond the weak object approximation based on Kramers-Kronig relations, realizing fast reconstruction with a few iterations.