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Recent advances in deep-learning based methods for image matching have demonstrated their superiority over traditional algorithms, enabling correspondence estimation in challenging scenes with significant differences in viewing angles,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Rahul Deshmukh , Avinash Kak

Satellite remote sensing is playing an increasing role in the rapid mapping of damage after natural disasters. In particular, synthetic aperture radar (SAR) can image the Earth's surface and map damage in all weather conditions, day and…

In this letter, we aim to address a synthetic aperture radar (SAR) despeckling problem with the necessity of neither clean (speckle-free) SAR images nor independent speckled image pairs from the same scene, and a practical solution for SAR…

Image and Video Processing · Electrical Eng. & Systems 2021-01-19 Ye Yuan , Jian Guan , Pengming Feng , Yanxia Wu

Spaceborne synthetic aperture radar can provide meters scale images of the ocean surface roughness day or night in nearly all weather conditions. This makes it a unique asset for many geophysical applications. Sentinel 1 SAR wave mode…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Nicolae-Catalin Ristea , Andrei Anghel , Mihai Datcu , Bertrand Chapron

Incoherent processing for synthetic aperture radar (SAR) is a promising approach that enables low implementation costs, simplified hardware designs and operations in high frequency spectrum compared to the conventional imaging methods using…

Signal Processing · Electrical Eng. & Systems 2023-06-30 Samia Kazemi , Bariscan Yonel , Birsen Yazici

Forward modeling of wave scattering and radar imaging mechanisms is the key to information extraction from synthetic aperture radar (SAR) images. Like inverse graphics in optical domain, an inherently-integrated forward-inverse approach…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Shilei Fu , Feng Xu

Distinguishing between the instantaneous and delayed scatterers in synthetic aperture radar (SAR) images is important for target identification and characterization. To perform this task, one can use the autocorrelation analysis of…

Image and Video Processing · Electrical Eng. & Systems 2019-09-24 Mikhail Gilman , Semyon Tsynkov

This paper presents two approaches for filter design based on stochastic distances for intensity speckle reduction. A window is defined around each pixel, overlapping samples are compared and only those which pass a goodness-of-fit test are…

Information Theory · Computer Science 2013-08-21 Leonardo Torres , Alejandro C. Frery

In this paper, we explore the possibility of detecting polar lows in C-band SAR images by means of deep learning. Specifically, we introduce a novel dataset consisting of Sentinel-1 images divided into two classes, representing the presence…

Computer Vision and Pattern Recognition · Computer Science 2022-09-09 Jakob Grahn , Filippo Maria Bianchi

Satellite-based remote sensing is instrumental in the monitoring and mitigation of the effects of anthropogenic climate change. Large scale, high resolution data derived from these sensors can be used to inform intervention and policy…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Matt Allen , Francisco Dorr , Joseph A. Gallego-Mejia , Laura Martínez-Ferrer , Anna Jungbluth , Freddie Kalaitzis , Raúl Ramos-Pollán

Synthetic Aperture Radar (SAR) and optical image registration is essential for remote sensing data fusion, with applications in military reconnaissance, environmental monitoring, and disaster management. However, challenges arise from…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Wenfei Zhang , Ruipeng Zhao , Yongxiang Yao , Yi Wan , Peihao Wu , Jiayuan Li , Yansheng Li , Yongjun Zhang

Synthetic aperture radar (SAR) imaging plays a critical role in all-weather, day-and-night remote sensing, yet reconstruction is often challenged by noise, undersampling, and complex scattering scenarios. Conventional methods, including…

Signal Processing · Electrical Eng. & Systems 2025-12-09 Hefei Gao , Tianyao Huang , Letian Guo , Jie He , Yonina C. Eldar

Radar is a low-cost and ubiquitous automotive sensor, but is limited by array resolution and sensitivity when performing direction of arrival analysis. Synthetic Aperture Radar (SAR) is a class of techniques to improve azimuth resolution…

Signal Processing · Electrical Eng. & Systems 2025-01-16 Leyla A. Kabuli , Griffin Foster

In the problem of spotlight mode airborne synthetic aperture radar (SAR) image formation, it is well-known that data collected over a wide azimuthal angle violate the isotropic scattering property typically assumed. Many techniques have…

Image and Video Processing · Electrical Eng. & Systems 2023-04-12 Victor Churchill , Anne Gelb

Synthetic Aperture Radar (SAR) provides all-weather, high-resolution imaging capabilities, but its unique imaging mechanism often requires expert interpretation, limiting its widespread applicability. Translating SAR images into more easily…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Xinyu Bai , Feng Xu

Speckle reduction is a longstanding topic in synthetic aperture radar (SAR) images. Many different schemes have been proposed for the restoration of intensity SAR images. Among the different possible approaches, methods based on…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Emanuele Dalsasso , Xiangli Yang , Loïc Denis , Florence Tupin , Wen Yang

Synthetic Aperture Radar (SAR) images are widely used in remote sensing due to their all-weather, all-day imaging capabilities. However, SAR images are highly susceptible to noise, particularly speckle noise, caused by the coherent imaging…

Information Theory · Computer Science 2024-12-25 Xuran Hu , Mingzhe Zhu , Djordje Stanković , Zhenpeng Feng , Shouhan Mao , Ljubiša Stanković

SAR (Synthetic Aperture Radar) imaging plays a central role in Remote Sensing due to, among other important features, its ability to provide high-resolution, day-and-night and almost weather-independent images. SAR images are affected from…

Computer Vision and Pattern Recognition · Computer Science 2017-04-21 Luis Gomez , Raydonal Ospina , Alejandro C. Frery

Synthetic Aperture Radar (SAR) imaging is capable of observing objects in nearly all weather and illumination conditions and has become an indispensable means of information acquisition for analysis and recognition of objects and scenes.…

Image and Video Processing · Electrical Eng. & Systems 2026-03-03 Jie Zhou , Yongxiang Liu , Li Liu , Weijie Li , Bowen Peng , Yafei Song , Gangyao Kuang , Xiang Li

Synthetic aperture radar (SAR) interferometry (InSAR) is performed using repeat-pass geometry. InSAR technique is used to estimate the topographic reconstruction of the earth surface. The main problem of the range-Doppler focusing technique…

Signal Processing · Electrical Eng. & Systems 2018-03-15 Gabriele Costante , Thomas A. Ciarfuglia , Filippo Biondi