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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

Cross-modal ship re-identification (ReID) between optical and synthetic aperture radar (SAR) imagery is fundamentally challenged by the severe radiometric discrepancy between passive optical imaging and coherent active radar sensing. While…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Furui Chen , Han Wang , Yuhan Sun , Jianing You , Yixuan Lv , Zhuang Zhou , Hong Tan , Shengyang Li

Street scene change detection continues to capture researchers' interests in the computer vision community. It aims to identify the changed regions of the paired street-view images captured at different times. The state-of-the-art network…

Computer Vision and Pattern Recognition · Computer Science 2021-05-31 Shuo Chen , Kailun Yang , Rainer Stiefelhagen

Audio-text retrieval (ATR), which retrieves a relevant caption given an audio clip (A2T) and vice versa (T2A), has recently attracted much research attention. Existing methods typically aggregate information from each modality into a single…

Sound · Computer Science 2024-03-18 Qian Wang , Jia-Chen Gu , Zhen-Hua Ling

Write-and-verify (WV) is essential for programming multi-level RRAM weights, yet under scaled-voltage and low-SNR conditions the verify read increasingly limits mapping accuracy, convergence speed and energy. We propose a Hadamard-domain WV…

Hardware Architecture · Computer Science 2026-04-15 Ilhuan Choi , Jiwon Yoo , Yoona Lee , Yewon Jeong , Jason Jaesung Lee , Woo-Seok Choi

Synthetic Aperture Radar (SAR) images are inherently corrupted by speckle noise, limiting their utility in high-precision applications. While deep learning methods have shown promise in SAR despeckling, most methods employ a single unified…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Ziqing Ma , Chang Yang , Zhichang Guo , Yao Li

In synthetic aperture radar (SAR), images are formed by focusing the response of stationary objects to a single spatial location. On the other hand, moving targets cause phase errors in the standard formation of SAR images that cause…

Information Theory · Computer Science 2013-02-20 Gregory E. Newstadt , Edmund G. Zelnio , Alfred O. Hero

Computer vision (CV) models for detection, prediction or classification tasks operate on video data-streams that are often degraded in the real world, due to deployment in real-time or on resource-constrained hardware. It is therefore…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Simon Malzard , Nitish Mital , Richard Walters , Victoria Nockles , Raghuveer Rao , Celso M. De Melo

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

Deep learning has driven significant progress in object detection using Synthetic Aperture Radar (SAR) imagery. Existing methods, while achieving promising results, often struggle to effectively integrate local and global information,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Mingxiang Cao , Weiying Xie , Jie Lei , Jiaqing Zhang , Daixun Li , Yunsong Li

Cloud segmentation is a critical challenge in remote sensing image interpretation, as its accuracy directly impacts the effectiveness of subsequent data processing and analysis. Recently, vision foundation models (VFM) have demonstrated…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Xuechao Zou , Shun Zhang , Kai Li , Shiying Wang , Junliang Xing , Lei Jin , Congyan Lang , Pin Tao

Radar is ubiquitous in autonomous driving systems due to its low cost and good adaptability to bad weather. Nevertheless, the radar detection performance is usually inferior because its point cloud is sparse and not accurate due to the poor…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Yang Liu , Feng Wang , Naiyan Wang , Zhaoxiang Zhang

Through-wall synthetic aperture radar (SAR) imaging is of significant interest for security purposes, in particular when using multi-static SAR systems consisting of multiple distributed radar transmitters and receivers to improve…

Numerical Analysis · Mathematics 2024-10-30 Francis Watson , Daniel Andre , William Robert Breckon Lionheart

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

Weakly-Supervised Video Anomaly Detection aims to identify anomalous events using only video-level labels, balancing annotation efficiency with practical applicability. However, existing methods often oversimplify the anomaly space by…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Junhee Lee , ChaeBeen Bang , MyoungChul Kim , MyeongAh Cho

Synthetic Aperture Radar SAR Automatic Target Recognition ATR is a key technique of remote-sensing image recognition which can be supported by deep neural networks The existing works of SAR ATR mostly focus on improving the accuracy of the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Jacob Fein-Ashley , Tian Ye , Rajgopal Kannan , Viktor Prasanna , Carl Busart

Four-dimensional (4D) Radar is a useful sensor for 3D object detection and the relative radial speed estimation of surrounding objects under various weather conditions. However, since Radar measurements are corrupted with invalid components…

Signal Processing · Electrical Eng. & Systems 2023-10-30 Seung-Hyun Kong , Dong-Hee Paek , Sangjae Cho

(Abridged) Quantitative three-dimensional (3D) position and velocity estimates obtained by passive radar will assist the Galileo Project in the detection and classification of aerial objects by providing critical measurements of range,…

Instrumentation and Methods for Astrophysics · Physics 2023-06-01 Mitch Randall , Alex Delacroix , Carson Ezell , Ezra Kelderman , Sarah Little , Abraham Loeb , Eric Masson , Wesley Andrés Watters , Richard Cloete , Abigail White

High quality perception is essential for autonomous driving (AD) systems. To reach the accuracy and robustness that are required by such systems, several types of sensors must be combined. Currently, mostly cameras and laser scanners…

Computer Vision and Pattern Recognition · Computer Science 2021-05-27 A. Ouaknine , A. Newson , J. Rebut , F. Tupin , P. Pérez

Maritime surveillance is indispensable for civilian fields, including national maritime safeguarding, channel monitoring, and so on, in which synthetic aperture radar (SAR) ship target recognition is a crucial research field. The core…

Image and Video Processing · Electrical Eng. & Systems 2023-08-22 Chenwei Wang , Jifang Pei , Siyi Luo , Weibo Huo , Yulin Huang , Yin Zhang , Jianyu Yang