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We have developed a robust, automated method, hereafter designated HIIphot, which enables accurate photometric characterization of HII regions while permitting genuine adaptivity to irregular source morphology. HIIphot utilizes…

Astrophysics · Physics 2009-10-31 David A. Thilker , Robert Braun , Rene A. M. Walterbos

Videos captured using Transmission Electron Microscopy (TEM) can encode details regarding the morphological and temporal evolution of a material by taking snapshots of the microstructure sequentially. However, manual analysis of such video…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Mingren Shen , Guanzhao Li , Dongxia Wu , Yudai Yaguchi , Jack C. Haley , Kevin G. Field , Dane Morgan

Nowadays, cardiac diagnosis largely depends on left ventricular function assessment. With the help of the segmentation deep learning model, the assessment of the left ventricle becomes more accessible and accurate. However, deep learning…

Computer Vision and Pattern Recognition · Computer Science 2021-10-29 Hang Duong Thi Thuy , Tuan Nguyen Minh , Phi Nguyen Van , Long Tran Quoc

The motions of the plasma and structures in and below the solar photosphere is not well understood. The results obtained using various methods cannot be in general considered as consistent, especially in details. In this contribution we…

Astrophysics · Physics 2008-09-30 M. Svanda , M. Klvana , M. Sobotka

Radar is a critical tool for maintaining knowledge of the many ob-jects in low Earth orbit and thus for maintaining confidence that societies around the world are secure against a variety of space-based threats. It is therefore important to…

Space Physics · Physics 2015-05-14 Mike Hapgood

We present a novel method for forecasting key ionospheric parameters using transformer-based neural networks. The model provides accurate forecasts and uncertainty quantification of the F2-layer peak plasma frequency (foF2), the F2-layer…

The plasma environment around Mars is highly variable because it is strongly influenced by the solar wind. Accurate identification of plasma regions around Mars is important for the community studying solar wind-Mars interactions,…

We present a Deep-Learning (DL) pipeline developed for the detection and characterization of astronomical sources within simulated Atacama Large Millimeter/submillimeter Array (ALMA) data cubes. The pipeline is composed of six DL models: a…

Instrumentation and Methods for Astrophysics · Physics 2022-11-22 Michele Delli Veneri , Lukasz Tychoniec , Fabrizia Guglielmetti , Giuseppe Longo , Eric Villard

Automatic airplane detection in aerial imagery has a variety of applications. Two of the significant challenges in this task are variations in the scale and direction of the airplanes. To solve these challenges, we present a…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Mohammad Reza Mohammadi

Object detection is one of the fundamental objectives in Applied Computer Vision. In some of the applications, object detection becomes very challenging such as in the case of satellite image processing. Satellite image processing has…

Computer Vision and Pattern Recognition · Computer Science 2021-04-26 Arsalan Tahir , Muhammad Adil , Arslan Ali

Deep learning approaches have achieved state-of-the-art performance in cardiac magnetic resonance (CMR) image segmentation. However, most approaches have focused on learning image intensity features for segmentation, whereas the…

Computer Vision and Pattern Recognition · Computer Science 2019-07-16 Jinming Duan , Ghalib Bello , Jo Schlemper , Wenjia Bai , Timothy J W Dawes , Carlo Biffi , Antonio de Marvao , Georgia Doumou , Declan P O'Regan , Daniel Rueckert

Condition monitoring subsea pipelines in low-visibility underwater environments poses significant challenges due to turbidity, light distortion, and image degradation. Traditional visual-based inspection systems often fail to provide…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Pragya Dhungana , Matteo Fresta , Niraj Tamrakar , Hariom Dhungana

Unmanned aerial vehicles (UAVs) equipped with advanced sensors have opened up new opportunities for monitoring wind power plants, including blades, towers, and other critical components. However, reliable defect detection requires…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Serhii Svystun , Pavlo Radiuk , Oleksandr Melnychenko , Oleg Savenko , Anatoliy Sachenko

We present a pipeline for geomorphological analysis that uses structure from motion (SfM) and deep learning on close-range aerial imagery to estimate spatial distributions of rock traits (size, roundness, and orientation) along a tectonic…

Building upon the concept of utilizing quasi-parabolic approximations to determine plasma frequency profiles from ionograms, we present a refined multi-quasi-parabolic method for modeling the E and F layers. While a recent study AIP…

Atmospheric and Oceanic Physics · Physics 2024-11-18 Renzo Kenyi Takagui Perez

Magnetospheres are a ubiquitous feature of magnetized bodies embedded in a plasma flow. While large planetary magnetospheres have been studied for decades by spacecraft, ion-scale "mini" magnetospheres can provide a unique environment to…

The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically. The model used for numerical analysis is based on the…

Plasma Physics · Physics 2016-09-13 Andreas Schmitt-Sody , Heiko G. Kurz , L. Bergé , S. Skupin , Pavel Polynkin

Accurately measuring the size, morphology, and structure of nanoparticles is very important, because they are strongly dependent on their properties for many applications. In this paper, we present a deep-learning based method for…

Materials Science · Physics 2022-07-29 Claudius Zelenka , Marius Kamp , Kolja Strohm , Akram Kadoura , Jacob Johny , Reinhard Koch , Lorenz Kienle

This article proposes an active learning method for high dimensional data, based on intrinsic data geometries learned through diffusion processes on graphs. Diffusion distances are used to parametrize low-dimensional structures on the…

Machine Learning · Computer Science 2019-05-31 Mauro Maggioni , James M. Murphy

In complex plasmas, the behavior of freely floating micrometer sized particles is studied. The particles can be directly visualized and recorded by digital video cameras. To analyze the dynamics of single particles, reliable algorithms are…

Plasma Physics · Physics 2018-02-14 Daniel P. Mohr , Christina A. Knapek , Peter Huber , Erich Zaehringer