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One of the fundamental problems in network analysis is detecting community structure in multi-layer networks, of which each layer represents one type of edge information among the nodes. We propose integrative spectral clustering approaches…

Machine Learning · Statistics 2022-10-07 Sihan Huang , Haolei Weng , Yang Feng

Satellites equipped with optical sensors capture high-resolution imagery, providing valuable insights into various environmental phenomena. In recent years, there has been a surge of research focused on addressing some challenges in remote…

Computer Vision and Pattern Recognition · Computer Science 2024-03-04 Loddo Fabio , Dario Piga , Michelucci Umberto , El Ghazouali Safouane

Context. The presence of clouds during observations with Imaging Atmospheric Cherenkov Telescopes can strongly affect the performance of the instrument due to additional absorption of light and scattering of light beyond the field of view…

Instrumentation and Methods for Astrophysics · Physics 2024-05-22 Natalia Żywucka , Julian Sitarek , Dorota Sobczyńska , Mario Pecimotika , Dario Hrupec , Dijana Dominis Prester , Lovro Pavletić , Saša Mićanović

Clouds containing ice particles play a crucial role in the climate system. Yet they remain a source of great uncertainty in climate models and future climate projections. In this work, we create a new observational constraint of…

Atmospheric and Oceanic Physics · Physics 2023-12-14 Kai Jeggle , Mikolaj Czerkawski , Federico Serva , Bertrand Le Saux , David Neubauer , Ulrike Lohmann

Geostationary satellites collect high-resolution weather data comprising a series of images which can be used to estimate wind speed and direction at different altitudes. The Derived Motion Winds (DMW) Algorithm is commonly used to process…

Applications · Statistics 2023-09-13 Indranil Sahoo , Joseph Guinness , Brian J. Reich

Semantic segmentation by convolutional neural networks (CNN) has advanced the state of the art in pixel-level classification of remote sensing images. However, processing large images typically requires analyzing the image in small patches,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Markku Luotamo , Sari Metsämäki , Arto Klami

Utility-scale solar arrays require specialized inspection methods for detecting faulty panels. Photovoltaic (PV) panel faults caused by weather, ground leakage, circuit issues, temperature, environment, age, and other damage can take many…

Image and Video Processing · Electrical Eng. & Systems 2024-07-02 David F. Ramirez , Deep Pujara , Cihan Tepedelenlioglu , Devarajan Srinivasan , Andreas Spanias

The role of clouds is manifold in understanding the various events in the atmosphere, and also in studying the radiative balance of the earth. The conventional manner of such cloud analysis is performed mainly via satellite images. However,…

Computer Vision and Pattern Recognition · Computer Science 2017-09-18 Shilpa Manandhar , Soumyabrata Dev , Yee Hui Lee , Yu Song Meng

Atmospheric aerosols have a major influence on the earths climate and public health. Hence, studying their properties and recovering them from light scattering measurements is of great importance. State of the art retrieval methods such as…

Atmospheric and Oceanic Physics · Physics 2021-11-16 Romana Boiger , Rob L. Modini , Alireza Moallemi , David Degen , Martin Gysel-Beer , Andreas Adelmann

The rapidly increasing share of fluctuating electricity from photovoltaics calls for accurate approaches to estimate cloud motion, the primary source for the varying power supply. While local sensor networks are prominent in targeting…

Signal Processing · Electrical Eng. & Systems 2024-10-24 Tobias Veihelmann , Philipp Reitz , Maximilian Lübke , Norman Franchi

Clouds significantly affect the quality of optical satellite images, which seriously limits their precise application. Recently, deep learning has been widely applied to cloud detection and has achieved satisfactory results. However, the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Shaocong Zhu , Zhiwei Li , Xinghua Li , Huanfeng Shen

Cloud and cloud shadow segmentation are fundamental processes in optical remote sensing image analysis. Current methods for cloud/shadow identification in geospatial imagery are not as accurate as they should, especially in the presence of…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Sorour Mohajerani , Parvaneh Saeedi

The presence of clouds between an airshower and a space-based detector can dramatically alter the measured signal characteristics due to absorption and scattering of the photonic signals. Furthermore, knowledge of the cloud cover in the…

Astrophysics · Physics 2007-05-23 John Krizmanic , Pierre Sokolsky , Robert Streitmatter

Infrared imaging properties of dusty winds around late-type stars are investigated in detail, employing a self-consistent model that couples the equations of motion and radiative transfer. Because of general scaling properties, the angular…

Astrophysics · Physics 2015-06-24 Zeljko Ivezic , Moshe Elitzur

Atmospheric Cherenkov telescopes rely on the Earth's atmosphere as part of the detector. The presence of clouds affects observations and can introduce biases if not corrected for. Correction methods typically require an atmospheric profile,…

Instrumentation and Methods for Astrophysics · Physics 2024-04-03 Julian Sitarek , Mario Pecimotika , Natalia Żywucka , Dorota Sobczyńska , Abelardo Moralejo , Dario Hrupec

Solar image analysis relies on the detection of coronal holes for predicting disruptions to earth's magnetic field. The coronal holes act as sources of solar wind that can reach the earth. Thus, coronal holes are used in physical models for…

Solar and Stellar Astrophysics · Physics 2022-07-21 Venkatesh Jatla

When registering point clouds resolved from an underlying 2-D pixel structure, such as those resulting from structured light and flash LiDAR sensors, or stereo reconstruction, it is expected that some points in one cloud do not have…

Computer Vision and Pattern Recognition · Computer Science 2017-11-17 John Stechschulte , Christoffer Heckman

In data mining, density-based clustering, which entails classifying datapoints according to their distributions in some space, is an essential method to extract information from large datasets. With the advent of software-based radio,…

This paper presents a deep-learning based framework for addressing the problem of accurate cloud detection in remote sensing images. This framework benefits from a Fully Convolutional Neural Network (FCN), which is capable of pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Sorour Mohajerani , Thomas A. Krammer , Parvaneh Saeedi

Clustering is a powerful tool which has been used in several forecasting works, such as time series forecasting, real time storm detection, flood forecasting and so on. In this paper, a generic methodology for weather forecasting is…

Computers and Society · Computer Science 2014-06-19 Sanjay Chakraborty , N. K. Nagwani , Lopamudra Dey