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As part of the ViPErLEED project (Vienna package for Erlangen LEED, low-energy electron diffraction), computer programs have been developed for facile and user-friendly data extraction from movies of LEED images. The programs make use of…

Quantitative low-energy electron diffraction [LEED $I(V)$] is a powerful method for surface-structure determination, based on a direct comparison of experimentally observed $I(V)$ data with computations for a structure model. As the…

Low-energy electron diffraction (LEED) is a cornerstone technique for determining surface atomic structures[heldStructureDeterminationLowenergy2025], yet the quantitative analysis of electron diffraction intensity as a function of incident…

计算物理 · 物理学 2026-04-07 Xiankang Tang , Ruiwen Xie , Jan P. Hofmann , Hongbin Zhang

Quantitative low-energy electron diffraction [LEED $I(V)$ or LEED $I(E)$, the evaluation of diffraction intensities $I$ as a function of the electron energy] is a versatile technique for the study of surface structures. The technique is…

材料科学 · 物理学 2026-05-12 Alexander M. Imre , Lutz Hammer , Ulrike Diebold , Michele Riva , Michael Schmid

We report on the development of a low-energy positron diffraction (LEPD) experimental station for surface structure analysis using a linac-based slow-positron beam. LEPD, the positron counterpart of low-energy electron diffraction (LEED),…

Autonomous inspection of underground infrastructure, such as sewer and culvert systems, is critical to public safety and urban sustainability. Although robotic platforms equipped with visual sensors can efficiently detect structural…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Johny J. Lopez , Md Meftahul Ferdaus , Mahdi Abdelguerfi

Low-energy electron microscopy (LEEM) is a surface science method that works primarily in the UHV environment. It provides information complementary to the other established techniques: it extends the limited view of scanning probe…

介观与纳米尺度物理 · 物理学 2025-07-16 Jan Čechal , Pavel Procházka

Precession Electron Diffraction (PED) offers a number of advantages for crystal structure analysis and solving unknown structures using electron diffraction. The current article uses many-beam simulations of PED intensities, in combination…

材料科学 · 物理学 2025-09-22 W. Sinkler , L. D. Marks

Ultrafast electron diffraction using MeV energy beams(MeV-UED) has enabled unprecedented scientific opportunities in the study of ultrafast structural dynamics in a variety of gas, liquid and solid state systems. Broad scientific…

Photoelectron diffraction (PED) is a powerful spectroscopic technique that combines elemental resolution with a high sensitivity to the local atomic arrangement at crystal surfaces, thus providing unique fingerprints of selected atomic…

The present paper reports on the recent activity of the data analysis software development for total-reflection high-energy positron diffraction (TRHEPD), a novel experimental technique for surface structure determination. Experiments using…

Uneven light image enhancement is a highly demanded task in many industrial image processing applications. Many existing enhancement methods using physical lighting models or deep-learning techniques often lead to unnatural results. This is…

图像与视频处理 · 电气工程与系统科学 2023-05-26 Tian Pu , Shuhang Wang , Zhenming Peng , Qingsong Zhu

Evaluation is essential in image fusion research, yet most existing metrics are directly borrowed from other vision tasks without proper adaptation. These traditional metrics, often based on complex image transformations, not only fail to…

计算机视觉与模式识别 · 计算机科学 2026-04-06 Chunyang Cheng , Tianyang Xu , Xiao-Jun Wu , Tao Zhou , Hui Li , Zhangyong Tang , Josef Kittler

Diffusion model-based low-light image enhancement methods rely heavily on paired training data, leading to limited extensive application. Meanwhile, existing unsupervised methods lack effective bridging capabilities for unknown degradation.…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Jinhong He , Minglong Xue , Aoxiang Ning , Chengyun Song

Accurate, infrastructure-less sensor systems for motion tracking are essential for mobile robotics and augmented reality (AR) applications. The most popular state-of-the-art visual-inertial odometry (VIO) systems, however, are too…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Jonas Kühne , Christian Vogt , Michele Magno , Luca Benini

To accurately understand engineering drawings, it is essential to establish the correspondence between images and their description tables within the drawings. Existing document understanding methods predominantly focus on text as the main…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Chao Gu , Ke Lin , Yiyang Luo , Jiahui Hou , Xiang-Yang Li

The early detection of structural malfunctions requires the installation of real-time monitoring systems ensuring continuous access to the damage-sensitive information; nevertheless, it can generate bottlenecks in terms of bandwidth and…

信号处理 · 电气工程与系统科学 2025-04-08 Amirhossein Kiamarzi , Amirhossein Moallemi , Federica Zonzini , Davide Brunelli , Davide Rossi , Giuseppe Tagliavini

Deep learning can accurately represent sub-grid-scale convective processes in climate models, learning from high resolution simulations. However, deep learning methods usually lack interpretability due to large internal dimensionality,…

A purposely built deep learning algorithm for the Verification of Earth-System ParametERisation (VESPER) is used to assess recent upgrades of the global physiographic datasets underpinning the quality of the Integrated Forecasting System…

大气与海洋物理 · 物理学 2023-10-25 Tom Kimpson , Margarita Choulga , Matthew Chantry , Gianpaolo Balsamo , Souhail Boussetta , Peter Dueben , Tim Palmer

We present a new, fast, and easy to use tool for modelling light and radial velocity curves of close eclipsing binaries with built-in methods for solving an inverse problem. The main goal of ELISa (Eclipsing binary Learning and Interactive…

天体物理仪器与方法 · 物理学 2021-09-01 Michal Čokina , Miroslav Fedurco , Štefan Parimucha
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