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High-resolution rainfall observations are crucial for weather forecasting, water management, and hazard mitigation. Traditional operational measurements are often biased and low-resolution, limiting their ability to capture local rainfall.…

Machine Learning · Computer Science 2026-05-08 Rafael Pablos Sarabia , Joachim Nyborg , Morten Birk , Ira Assent

Reconstruction of field quantities from sparse measurements is a problem arising in a broad spectrum of applications. This task is particularly challenging when the mapping between sparse measurements and field quantities is performed in an…

Fluid Dynamics · Physics 2022-10-20 Alejandro Güemes , Carlos Sanmiguel Vila , Stefano Discetti

Synthetic Aperture RADAR is a radar imaging technique in which the relative motion of the sensor is used to synthesize a very long antenna and obtain high spatial resolution. The increasing interest of the scientific community to simplify…

Signal Processing · Electrical Eng. & Systems 2018-06-05 Cataldo Guaragnella , Tiziana D'Orazio

For precipitation retrievals over land, using satellite measurements in microwave bands, it is important to properly discriminate the weak rainfall signals from strong and highly variable background surface emission. Traditionally, land…

Data Analysis, Statistics and Probability · Physics 2015-03-23 Ardeshir M. Ebtehaj , Rafael L. Bras , Efi Foufoula-Georgiou

Synthetic aperture radar (SAR) data is becoming increasingly available to a wide range of users through commercial service providers with resolutions reaching 0.5m/px. Segmenting SAR data still requires skilled personnel, limiting the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Xiaying Wang , Lukas Cavigelli , Manuel Eggimann , Michele Magno , Luca Benini

Synthetic Aperture Radar (SAR) offers all-weather, high-resolution imaging capabilities, but its complex imaging mechanism often poses challenges for interpretation. In response to these limitations, this paper introduces an innovative…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Xinyu Bai , Feng Xu

Rainfall prediction remains a persistent challenge due to the highly nonlinear and complex nature of meteorological data. Existing approaches lack systematic utilization of grid search for optimal hyperparameter tuning, relying instead on…

Machine Learning · Computer Science 2025-01-29 Zhenqi Li , Junhao Zhong , Hewei Wang , Jinfeng Xu , Yijie Li , Jinjiang You , Jiayi Zhang , Runzhi Wu , Soumyabrata Dev

This report proposes a robust method for classifying oceanic and atmospheric phenomena using synthetic aperture radar (SAR) imagery. Our proposed method leverages the powerful pre-trained model Swin Transformer v2 Large as the backbone and…

Image and Video Processing · Electrical Eng. & Systems 2024-05-07 Haonan Xu , Han Yinan , Haotian Si , Yang Yang

In an effort to provide optimal inputs to downstream modeling systems (e.g., a hydrodynamics model that simulates the water circulation of a lake), we hereby strive to enhance resolution of precipitation fields from a weather model by up to…

Atmospheric and Oceanic Physics · Physics 2020-12-03 Campbell D. Watson , Chulin Wang , Timothy Lynar , Komminist Weldemariam

Forecasting global precipitation patterns and, in particular, extreme precipitation events is of critical importance to preparing for and adapting to climate change. Making accurate high-resolution precipitation forecasts using traditional…

Machine Learning · Computer Science 2022-10-25 James Duncan , Shashank Subramanian , Peter Harrington

Synthetic aperture radar (SAR) is a day or night any-weather imaging modality that is an important tool in remote sensing. Most existing SAR image formation methods result in a maximum a posteriori image which approximates the reflectivity…

Applications · Statistics 2020-07-14 Victor Churchill , Anne Gelb

Earth observation satellites like Sentinel-1 (S1) and Sentinel-2 (S2) provide complementary remote sensing (RS) data, but S2 images are often unavailable due to cloud cover or data gaps. To address this, we propose a diffusion model…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Kaan Aydin , Joelle Hanna , Damian Borth

Removing the rain streaks from single image is still a challenging task, since the shapes and directions of rain streaks in the synthetic datasets are very different from real images. Although supervised deep deraining networks have…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Yanyan Wei , Zhao Zhang , Yang Wang , Haijun Zhang , Mingbo Zhao , Mingliang Xu , Meng Wang

The superior performance introduced by deep learning approaches in removing atmospheric particles such as snow and rain from a single image; favors their usage over classical ones. However, deep learning-based approaches still suffer from…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Ibrahim Kajo , Mohamed Kas , Yassine Ruichek

Reconstructing high-resolution rainfall fields is essential for flood forecasting, hydrological modeling, and climate analysis. However, existing spatial interpolation methods-whether based on automatic weather station (AWS) measurements or…

Machine Learning · Computer Science 2025-10-08 Lin Chen , Jun Chen , Minghui Qiu , Shuxin Zhong , Binghong Chen , Kaishun Wu

This paper presents five different statistical methods for ground scene prediction (GSP) in wavelength-resolution synthetic aperture radar (SAR) images. The GSP image can be used as a reference image in a change detection algorithm yielding…

Image and Video Processing · Electrical Eng. & Systems 2022-07-26 B. G. Palm , D. I. Alves , M. I. Pettersson , V. T. Vu , R. Machado , R. J. Cintra , F. M. Bayer , P. Dammert , H. Hellsten

Deep learning has emerged as a promising tool for precipitation downscaling. However, current models rely on likelihood-based loss functions to properly model the precipitation distribution, leading to spatially inconsistent projections…

Atmospheric and Oceanic Physics · Physics 2024-08-02 Jose González-Abad

Snow depth plays a central role in seasonal snowpack characterization and the terrestrial water cycle, yet remains challenging to estimate at high spatial resolution. Recent studies have shown that repeat-pass interferometric synthetic…

Computational Engineering, Finance, and Science · Computer Science 2026-04-21 Nayan Yadav , Shadi Oveisgharan , Shirin Jalali

Rain fills the atmosphere with water particles, which breaks the common assumption that light travels unaltered from the scene to the camera. While it is well-known that rain affects computer vision algorithms, quantifying its impact is…

Computer Vision and Pattern Recognition · Computer Science 2020-09-09 Maxime Tremblay , Shirsendu Sukanta Halder , Raoul de Charette , Jean-François Lalonde

Synthetic aperture radar technology is crucial for high-resolution imaging under various conditions; however, the acquisition of real-world synthetic aperture radar data for deep learning-based automatic target recognition remains…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Minjun Kim , Ohtae Jang , Haekang Song , Heesub Shin , Jaewoo Ok , Minyoung Back , Jaehyuk Youn , Sungho Kim
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