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99 Results Found

  • Review
  • Open Access
7 Citations
4,427 Views
19 Pages

Principle and Recent Development in Photonic Time-Stretch Imaging

  • Guoqing Wang,
  • Yuan Zhou,
  • Rui Min,
  • E Du and
  • Chao Wang

Inspiring development in optical imaging enables great applications in the science and engineering industry, especially in the medical imaging area. Photonic time-stretch imaging is one emerging innovation that attracted a wide range of attention due...

  • Article
  • Open Access
1 Citations
1,295 Views
12 Pages

An Ultrafast Optical Imaging System with Anamorphic Transformation Based on STEAM Structure

  • Guoqing Wang,
  • Yuan Zhou,
  • Rui Min,
  • Fang Zhao,
  • E Du,
  • Xingquan Li,
  • Cong Qiu,
  • Dongrui Xiao and
  • Chao Wang

12 December 2024

The time-stretch (TS) imaging system is one type of ultrafast optical imaging system that enables imaging with an unprecedented imaging speed of tens of hundreds of megahertz. The TS imaging achieves linear one-to-one mapping between wavelength and t...

  • Article
  • Open Access
5 Citations
5,057 Views
22 Pages

15 April 2019

Researchers have developed a cell stretching device to mimic the in vivo mechanical environment in vitro in order to investigate cell mechanotransduction. Cyclic stretch is involved in lengthening and relaxation phases. Cells may respond to mechanica...

  • Article
  • Open Access
10 Citations
6,782 Views
14 Pages

Optical Machine Learning Using Time-Lens Deep Neural NetWorks

  • Luhe Zhang,
  • Caiyun Li,
  • Jiangyong He,
  • Yange Liu,
  • Jian Zhao,
  • Huiyi Guo,
  • Longfei Zhu,
  • Mengjie Zhou,
  • Kaiyan Zhu and
  • Zhi Wang

As a high-throughput data analysis technique, photon time stretching (PTS) is widely used in the monitoring of rare events such as cancer cells, rough waves, and the study of electronic and optical transient dynamics. The PTS technology relies on hig...

  • Article
  • Open Access
2 Citations
1,927 Views
19 Pages

Dual-Wavelength LiDAR with a Single-Pixel Detector Based on the Time-Stretched Method

  • Simin Chen,
  • Shaojing Song,
  • Yicheng Wang,
  • Hao Pan,
  • Fashuai Li and
  • Yuwei Chen

4 September 2024

In the fields of agriculture and forestry, the Normalized Difference Vegetation Index (NDVI) is a critical indicator for assessing the physiological state of plants. Traditional imaging sensors can only collect two-dimensional vegetation distribution...

  • Article
  • Open Access
1,609 Views
24 Pages

18 November 2024

The Glimmer Imager of Urbanization (GIU) on SDGSAT-1 provides high-resolution and global-coverage images of night-time lights (NLs) with 10 m panchromatic (PAN) and 40 m multispectral (MS) imagery. High-resolution 10 m MS NL images after ideal fusion...

  • Article
  • Open Access
5 Citations
5,632 Views
17 Pages

9 September 2019

Photonic time-stretch (PTS) technology enables revolutionary technical breakthroughs in ultrafast electronic and optical systems. By means of employing large chromatic dispersion to map the spectrum of an ultrashort optical pulse into a stretched tim...

  • Article
  • Open Access
1 Citations
2,141 Views
22 Pages

15 June 2025

Swept-source optical coherence tomography (SS-OCT) is a widely used imaging technique, particularly in medical diagnostics, due to its ability to provide high-resolution cross-sectional images. However, one of the main challenges in SS-OCT systems is...

  • Article
  • Open Access
1 Citations
2,468 Views
11 Pages

Nanorings to Probe Mechanical Stress of Single-Stranded DNA Mediated by the DNA Duplex

  • Karen Zagorski,
  • Tommy Stormberg,
  • Mohtadin Hashemi,
  • Anatoly B. Kolomeisky and
  • Yuri L. Lyubchenko

26 October 2022

The interplay between the mechanical properties of double-stranded and single-stranded DNA is a phenomenon that contributes to various genetic processes in which both types of DNA structures coexist. Highly stiff DNA duplexes can stretch single-stran...

  • Article
  • Open Access
2 Citations
2,932 Views
19 Pages

31 October 2023

Real-time compression of images with a high dynamic range into those with a low dynamic range while preserving the maximum amount of detail is still a critical technology in infrared image processing. We propose a dynamic range compression and enhanc...

  • Article
  • Open Access
1 Citations
2,383 Views
21 Pages

Stretching Deep Architectures: A Deep Learning Method without Back-Propagation Optimization

  • Li-Na Wang,
  • Yuchen Zheng,
  • Hongxu Wei,
  • Junyu Dong and
  • Guoqiang Zhong

In recent years, researchers have proposed many deep learning algorithms for data representation learning. However, most deep networks require extensive training data and a lot of training time to obtain good results. In this paper, we propose a nove...

  • Article
  • Open Access
1,061 Views
18 Pages

20 August 2025

Prolonged sedentary behavior in office environments is a key risk factor for musculoskeletal disorders and metabolic health issues. While workplace stretching interventions can mitigate these risks, effective monitoring solutions are often limited by...

  • Article
  • Open Access
1 Citations
2,141 Views
20 Pages

Molecular Imaging of Fibroblast Activation Protein in Response to Cardiac Injury Using [68Ga]Ga-DATA5m.SA.FAPi

  • Victoria Weissenböck,
  • Lukas Weber,
  • Michaela Schlederer,
  • Laura Silva Sousa,
  • Anna Stampfer,
  • Simge Baydar,
  • Thomas Nakuz,
  • Raffaella Calabretta,
  • Ana Isabel Antunes Goncalves and
  • Cecile Philippe
  • + 5 authors

29 April 2025

Background/Objectives: Fibroblast activation protein (FAP) has gained tremendous traction as a target for tumor imaging and cancer treatment, while also playing a key role in fibrosis. Our study aimed to evaluate [68Ga]Ga-DATA5m.SA.FAPi for PET imagi...

  • Article
  • Open Access
4 Citations
5,743 Views
12 Pages

27 August 2021

Here, we propose a novel attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy method for simultaneously monitoring the curing reaction and the diffusion behavior of curing agents at the surface of rubber in real-time. The pr...

  • Technical Note
  • Open Access
1,229 Views
12 Pages

Stretched Radial Trajectory Design for Efficient MRI with Enhanced K-Space Coverage and Image Resolution

  • Li Song Gong,
  • Zihan Zhou,
  • Qing Li,
  • Yurui Qian,
  • Yang Yang,
  • Kawin Setsompop,
  • Zhitao Li,
  • Xiaozhi Cao and
  • Congyu Liao

We present a stretched radial trajectory design that enhances image resolution in MRI by expanding k-space coverage without increasing readout duration or scan time. The method dynamically modulates gradient amplitudes as a function of projection ang...

  • Article
  • Open Access
7 Citations
3,616 Views
12 Pages

Anisotropy of Thin Foils Obtained from Microwave-Irradiated Poly(Vinyl Alcohol) Aqueous Solutions

  • Cristina-Delia Nechifor,
  • Magdalena Aflori and
  • Dana-Ortansa Dorohoi

21 June 2019

In this paper, poly(vinyl alcohol) (PVA) foils of comparable thickness were obtained by using 10 wt % PVA aqueous solutions exposed to microwave (MW) radiations for different times. The main goal of this paper is to identify the effects of MW irradia...

  • Article
  • Open Access
33 Citations
5,714 Views
12 Pages

Bat Algorithm Based Non-linear Contrast Stretching for Satellite Image Enhancement

  • Anju Asokan,
  • Daniela E. Popescu,
  • J. Anitha and
  • D. Jude Hemanth

The remote sensing images acquired from the satellites are low contrast images. The availability of low contrast images and failure of the traditional methods such as Histogram Equalization and Gamma correction in preserving the brightness levels in...

  • Article
  • Open Access
4 Citations
2,689 Views
10 Pages

Luminosity and Contrast Adjustment of Fundus Images with Reflectance

  • Mofleh Hannuf AlRowaily,
  • Hamzah Arof and
  • Imanurfatiehah Ibrahim

5 March 2023

This paper presents an automatic correction method for luminosity and contrast variation in fundus images. Sixty retina or fundus images with different levels of reflectance are selected from online databases and used to assess the effectiveness of t...

  • Article
  • Open Access
2 Citations
1,901 Views
13 Pages

14 July 2021

Optical coherence tomography (OCT) is widely used in the field of ophthalmic imaging. The existing technology cannot automatically extract the contour of the OCT images of cystoid macular edema (CME) and can only evaluate the degree of lesions by det...

  • Article
  • Open Access
2 Citations
1,563 Views
18 Pages

13 March 2025

Automatic registration of remote sensing images is an important task, which requires the establishment of appropriate correspondence between the sensed image and the reference image. Nowadays, the trend of satellite remote sensing technology is shift...

  • Article
  • Open Access
1 Citations
994 Views
18 Pages

Enhancing Three-Dimensional Reconstruction Through Intelligent Colormap Selection

  • Alexandros Vrochidis,
  • Dimitrios Tzovaras and
  • Stelios Krinidis

18 April 2025

Photogrammetry is the process of creating three-dimensional (3D) reconstructions from two-dimensional images. In this paper, a novel method is introduced that significantly enhances 3D reconstruction by improving image quality through a combination o...

  • Article
  • Open Access
17 Citations
6,468 Views
14 Pages

A Simulation Analysis of Maternal Pelvic Floor Muscle

  • Rongrong Xuan,
  • Mingshuwen Yang,
  • Yajie Gao,
  • Shuaijun Ren,
  • Jialin Li,
  • Zhenglun Yang,
  • Yang Song,
  • Xu-Hao Huang,
  • Ee-Chon Teo and
  • Yaodong Gu

Pelvic floor disorder (PFD) is a common disease affecting the quality of life of middle-aged and elderly women. Pelvic floor muscle (PFM) damage is related to delivery mode, fetal size, and parity. Spontaneous vaginal delivery causes especially great...

  • Article
  • Open Access
21 Citations
5,216 Views
12 Pages

Over-Stretching Tolerant Conductors on Rubber Films by Inkjet-Printing Silver Nanoparticles for Wearables

  • Andreas Albrecht,
  • Marco Bobinger,
  • José F. Salmerón,
  • Markus Becherer,
  • Gordon Cheng,
  • Paolo Lugli and
  • Almudena Rivadeneyra

19 December 2018

The necessity to place sensors far away from the processing unit in smart clothes or artificial skins for robots may require conductive wirings on stretchable materials at very low-cost. In this work, we present an easy method to produce wires using...

  • Brief Report
  • Open Access
3 Citations
3,058 Views
14 Pages

An Eco-Study for a Feasible Project: “Torun and Its Vistula Stretch—An Important Green Navigation Spot on a Blue Inland Waterway”

  • Valentina-Mariana Manoiu,
  • Alexandru-Ioan Craciun,
  • Katarzyna Kubiak-Wójcicka,
  • Marina Antonescu and
  • Bogdan Olariu

27 September 2022

This paper aims to present the main trends of an eco-study for a possibly challenging future inland waterway transportation project. The study will prove if Torun and its Vistula stretch represent a viable and profitable spot on this inland waterway,...

  • Article
  • Open Access
3 Citations
2,238 Views
14 Pages

Design and Dynamic In Vivo Validation of a Multi-Channel Stretchable Liquid Metal Coil Array

  • Elizaveta Motovilova,
  • Terry Ching,
  • Jana Vincent,
  • Ek Tsoon Tan,
  • Victor Taracila,
  • Fraser Robb,
  • Michinao Hashimoto,
  • Darryl B. Sneag and
  • Simone Angela Winkler

5 July 2024

Recent developments in the field of radiofrequency (RF) coils for magnetic resonance imaging (MRI) offer flexible and patient-friendly solutions. Previously, we demonstrated a proof-of-concept single-element stretchable coil design based on liquid me...

  • Article
  • Open Access
6 Citations
4,473 Views
19 Pages

Study on Local to Global Radiometric Balance for Remotely Sensed Imagery

  • Xiaofan Liu,
  • Guoqing Zhou,
  • Wuming Zhang and
  • Shezhou Luo

24 May 2021

Due to the difference of factors, such as lighting conditions, shooting environments, and time, there is compound brightness difference between adjacent images, which includes local brightness difference and radiometric difference. This paper propose...

  • Article
  • Open Access
10 Citations
3,336 Views
15 Pages

Shoreline Detection Accuracy from Video Monitoring Systems

  • Jaime Arriaga,
  • Gabriela Medellin,
  • Elena Ojeda and
  • Paulo Salles

Video monitoring has become an indispensable tool to understand beach processes. However, the measurement accuracy derived from the images has been taken for granted despite its dependence on the calibration process and camera movements. An easy to i...

  • Article
  • Open Access
6 Citations
2,839 Views
23 Pages

8 January 2022

This experiment presents a study carried out on the electric charge passing textiles for heat production in compression weft-knitted composite fabrics used for medical purposes. The aim was to flourish compression support of knitted structure with in...

  • Article
  • Open Access
6 Citations
2,646 Views
19 Pages

The deposited particulate material within a fibrous filter affects the pressure drop which develops through three different stages. The implementation of a time-adjustable matrix is intended to cause detachment of particle structures from fibers with...

  • Article
  • Open Access
17 Citations
3,681 Views
15 Pages

19 February 2023

An improved Retinex fusion image enhancement algorithm is proposed for the traditional image denoising methods and problems of halo enlargement and image overexposure after image enhancement caused by the existing Retinex algorithm. First, a homomorp...

  • Article
  • Open Access
13 Citations
6,798 Views
19 Pages

We used synthetic aperture radar (SAR) data collected over Peru’s Lines and Geoglyphs of the Nasca and Palpa World Heritage Site to detect and measure landscape disturbance threatening world-renowned archaeological features and ecosystems. We employe...

  • Article
  • Open Access
28 Citations
7,116 Views
20 Pages

23 October 2018

Irrigated agriculture requires high reliability from water delivery networks and high flows to satisfy demand at seasonal peak times. Aquatic vegetation in irrigation channels are a major impediment to this, constraining flow rates. This work investi...

  • Article
  • Open Access
20 Citations
3,527 Views
22 Pages

Shoreline Evolution and Erosion Vulnerability Assessment along the Central Adriatic Coast with the Contribution of UAV Beach Monitoring

  • Gianluigi Di Paola,
  • Antonio Minervino Amodio,
  • Grazia Dilauro,
  • Germàn Rodriguez and
  • Carmen M. Rosskopf

22 September 2022

Coastal erosion and its impacts on the involved communities is a topic of great scientific interest that also reflects the need for modern as well as cost and time-effective methodologies to be integrated into or even to substitute traditional invest...

  • Article
  • Open Access
19 Citations
3,779 Views
25 Pages

Based on deep learning, an underwater image instance segmentation method is proposed. Firstly, in view of the scarcity of underwater related data sets, the size of the data set is expanded by measures including image rotation and flipping, and image...

  • Article
  • Open Access
3 Citations
4,639 Views
14 Pages

27 November 2017

Flexible electronic devices, such as the typical thin-film transistors, are widely adopted in the area of sensors, displayers, wearable equipment, and such large-area applications, for their features of bending and stretching; additionally, in some a...

  • Article
  • Open Access
26 Citations
5,598 Views
16 Pages

Fractional Order Complexity Model of the Diffusion Signal Decay in MRI

  • Richard L. Magin,
  • Hamid Karani,
  • Shuhong Wang and
  • Yingjie Liang

12 April 2019

Fractional calculus models are steadily being incorporated into descriptions of diffusion in complex, heterogeneous materials. Biological tissues, when viewed using diffusion-weighted, magnetic resonance imaging (MRI), hinder and restrict the diffusi...

  • Article
  • Open Access
6 Citations
3,657 Views
24 Pages

26 February 2023

The modeling and simulation of topography-induced imaging distortions are crucial for consistent radiometric information exploitation in current and forthcoming SAR-based Earth observation missions with a high spatial and temporal resolution, with re...

  • Article
  • Open Access
1 Citations
2,179 Views
15 Pages

Partial discharge is an important symptom of cable aging, and timely detection of potential defects is of great significance to ensure the stability and safety of the power supply. However, due to the diversity of inspection equipment and information...

  • Article
  • Open Access
9 Citations
3,678 Views
12 Pages

Real Space and Time Imaging of Collective Headgroup Dipole Motions in Zwitterionic Lipid Bilayers

  • Dima Bolmatov,
  • C. Patrick Collier,
  • Dmitry Zav’yalov,
  • Takeshi Egami and
  • John Katsaras

Lipid bilayers are supramolecular structures responsible for a range of processes, such as transmembrane transport of ions and solutes, and sorting and replication of genetic materials, to name just a few. Some of these processes are transient and cu...

  • Article
  • Open Access
25 Citations
4,304 Views
10 Pages

22 March 2019

The ability to accurately and non-invasively quantify highly concentrated magnetic nanoparticles (MNPs) is desirable for many emerging applications. Ultrashort echo time quantitative susceptibility mapping (UTE-QSM) has demonstrated the capability to...

  • Article
  • Open Access
724 Views
20 Pages

12 August 2025

In deepwater drilling operations, inhibiting methane hydrate (MH) formation is critical for wellbore flow assurance. This study synthesized a zwitterionic polymer NDAD and evaluated its hydrate inhibition performance through high-pressure reactor tes...

  • Article
  • Open Access
7 Citations
3,886 Views
25 Pages

Comparative Analysis of Image Processing Techniques for Enhanced MRI Image Quality: 3D Reconstruction and Segmentation Using 3D U-Net Architecture

  • Chee Chin Lim,
  • Apple Ho Wei Ling,
  • Yen Fook Chong,
  • Mohd Yusoff Mashor,
  • Khalilalrahman Alshantti and
  • Mohd Ezane Aziz

Osteosarcoma is a common type of bone tumor, particularly prevalent in children and adolescents between the ages of 5 and 25 who are experiencing growth spurts during puberty. Manual delineation of tumor regions in MRI images can be laborious and tim...

  • Article
  • Open Access
13 Citations
4,382 Views
19 Pages

EIEN: Endoscopic Image Enhancement Network Based on Retinex Theory

  • Ziheng An,
  • Chao Xu,
  • Kai Qian,
  • Jubao Han,
  • Wei Tan,
  • Dou Wang and
  • Qianqian Fang

21 July 2022

In recent years, deep convolutional neural network (CNN)-based image enhancement has shown outstanding performance. However, due to the problems of uneven illumination and low contrast existing in endoscopic images, the implementation of medical endo...

  • Article
  • Open Access
4 Citations
2,326 Views
11 Pages

8 September 2023

CsI(Tl) scintillation screens have been widely applied in X-ray nondestructive testing (NDT) because of their low cost, high scintillation efficiency, and fluorescence guide columnar microstructures. The effect of humidity exposure on the microstruct...

  • Article
  • Open Access
6 Citations
4,031 Views
12 Pages

Brownian Motion Influence on AFM Exosomes’ Size Measurements

  • Katarzyna Życieńska,
  • Beata Pszczółkowska,
  • Beata Brzozowska,
  • Maciej Kamiński,
  • Tomasz Lorenc,
  • Wioletta Olejarz,
  • Sławomir Sęk and
  • Józef Ginter

3 September 2022

Extracellular vesicles are evaluated by nanoparticle tracking analysis (NTA), providing information on their hydrodynamic diameters, and by atomic force microscopy (AFM) to calculate their geometric diameters. The aim of this study is to explore the...

  • Article
  • Open Access
5 Citations
6,583 Views
13 Pages

Strengthening of Back Muscles Using a Module of Flexible Strain Sensors

  • Wan-Chun Chuang,
  • Hwai-Ting Lin and
  • Wei-Long Chen

9 February 2015

This research aims at developing a flexible strain module applied to the strengthening of back muscles. Silver films were sputtered onto flexible substrates to produce a flexible sensor. Assuming that back muscle elongation is positively correlated w...

  • Article
  • Open Access
1 Citations
2,590 Views
24 Pages

Impact Evaluation of Sound Dataset Augmentation and Synthetic Generation upon Classification Accuracy

  • Eleni Tsalera,
  • Andreas Papadakis,
  • Gerasimos Pagiatakis and
  • Maria Samarakou

We investigate the impact of dataset augmentation and synthetic generation techniques on the accuracy of supervised audio classification based on state-of-the-art neural networks used as classifiers. Dataset augmentation techniques are applied upon t...

  • Article
  • Open Access
5 Citations
3,493 Views
17 Pages

This experimental study probes the dynamic behaviour of a 3 mm ABS sheet during positive mould vacuum-assisted thermoforming. In this process, the sheet undergoes large and fast deformations caused by the applied vacuum and mechanical stretching by t...

  • Communication
  • Open Access
5 Citations
2,591 Views
16 Pages

Metal Ion Microwave-Assisted Depolymerization of Poly(Ethylene Terephthalate): A Zinc Salts-Based Deep Eutectic Solvent as Case Study

  • Cosimo Ricci,
  • Lorenzo Gontrani,
  • Elvira Maria Bauer,
  • Giorgia Ciufolini,
  • Angelo Lembo,
  • Lorenzo Casoli and
  • Marilena Carbone

19 June 2024

In this study, a new and very quick method to depolymerize PET plastics is reported. The depolymerization experiments were conducted using a type-IV deep eutectic solvent containing ZnCl2 and urea, and a microwave oven as reactor. Different combinati...

  • Article
  • Open Access
5 Citations
4,121 Views
13 Pages

22 November 2019

The study explored punicalagin (PGN) as a wheat flour enhancer. The impact of PGN on the physicochemical and structural properties of wheat flour have been investigated. It turned out that PGN increased the formation time, stability, tensile resistan...

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