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One of the challenges in spaceborne synthetic aperture radar (SAR) is modeling and mitigating radio frequency interference (RFI) artifacts in SAR imagery. Linear frequency modulated (LFM) signals have been commonly used for characterizing…

Image and Video Processing · Electrical Eng. & Systems 2025-09-24 Dehui Yang , Feng Xi , Qihao Cao , Huizhang Yang

Segment Anything Models (SAM) have made significant advancements in image segmentation, allowing users to segment target portions of an image with a single click (i.e., user prompt). Given its broad applications, the robustness of SAM…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Yifan Shen , Zhengyuan Li , Gang Wang

Deep neural networks have been shown to be vulnerable to backdoor attacks, which could be easily introduced to the training set prior to model training. Recent work has focused on investigating backdoor attacks on natural images or toy…

Cryptography and Security · Computer Science 2021-01-05 Munachiso Nwadike , Takumi Miyawaki , Esha Sarkar , Michail Maniatakos , Farah Shamout

Changing facial expressions, gestures, or background details may dramatically alter the meaning conveyed by an image. Notably, recent advances in diffusion models greatly improve the quality of image manipulation while also opening the door…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Alex Costanzino , Woody Bayliss , Juil Sock , Marc Gorriz Blanch , Danijela Horak , Ivan Laptev , Philip Torr , Fabio Pizzati

Frequency modulated continuous wave (FMCW) radar is emerging as a trendy radar system for synthetic aperture radar (SAR). This letter proposes a novel method for the extraction of the SAR image with the FMCW radar. The proposed method can…

Signal Processing · Electrical Eng. & Systems 2020-10-01 Junhyeong Park , Dae-Hwan Jung , Seong-Ook Park

Mapping land surface disturbances supports disaster response, resource and ecosystem management, and climate adaptation efforts. Synthetic aperture radar (SAR) is an invaluable tool for disturbance mapping, providing consistent time-series…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Harris Hardiman-Mostow , Charles Marshak , Alexander L. Handwerger

Generative Adversarial Networks (GANs) have shown tremendous potential in synthesizing a large number of realistic SAR images by learning patterns in the data distribution. Some GANs can achieve image editing by introducing latent codes,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Xuran Hu , Mingzhe Zhu , Ziqiang Xu , Zhenpeng Feng , Ljubisa Stankovic

In recent years, methods for producing highly realistic synthetic images have significantly advanced, allowing the creation of high-quality images from text prompts that describe the desired content. Even more impressively, Stable Diffusion…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Sara Mandelli , Paolo Bestagini , Stefano Tubaro

In recent years, image manipulation is becoming increasingly more accessible, yielding more natural-looking images, owing to the modern tools in image processing and computer vision techniques. The task of the identification of forged…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Akash Kumar , Arnav Bhavasar

AIGC-based image editing technology has greatly simplified the realistic-level image modification, causing serious potential risks of image forgery. This paper introduces a new approach to tampering detection using the Segment Anything…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Qi Song , Ziyuan Luo , Renjie Wan

Anomalous change detection (ACD) methods separate common, uninteresting changes from rare, significant changes in co-registered images collected at different points in time. In this paper we evaluate methods to improve the performance of…

Computer Vision and Pattern Recognition · Computer Science 2020-05-18 Hannah J. Murphy , Christopher X. Ren , Matthew T. Calef

Neural networks have been proven to be vulnerable to a variety of adversarial attacks. From a safety perspective, highly sparse adversarial attacks are particularly dangerous. On the other hand the pixelwise perturbations of sparse attacks…

Machine Learning · Computer Science 2019-09-12 Francesco Croce , Matthias Hein

Synthetic aperture radar automatic target recognition (SAR ATR) methods fall short with limited training data. In this letter, we propose a causal interventional ATR method (CIATR) to formulate the problem of limited SAR data which helps us…

Image and Video Processing · Electrical Eng. & Systems 2023-08-21 Chenwei Wang , Xin Chen , You Qin , Siyi Luo , Yulin Huang , Jifang Pei , Jianyu Yang

This work presents an attack-aware deepfake and image-forensics detector designed for robustness, well-calibrated probabilities, and transparent evidence under realistic deployment conditions. The method combines red-team training with…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Noor Fatima , Hasan Faraz Khan , Muzammil Behzad

With the rapid progress over the past five years, face authentication has become the most pervasive biometric recognition method. Thanks to the high-accuracy recognition performance and user-friendly usage, automatic face recognition (AFR)…

Computer Vision and Pattern Recognition · Computer Science 2022-09-30 Chenqi Kong , Shiqi Wang , Haoliang Li

Previous work has suggested that preprocessing images through lossy compression can defend against adversarial perturbations, but comprehensive attack evaluations have been lacking. In this paper, we construct strong white-box and adaptive…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Samuel Räber , Till Aczel , Andreas Plesner , Roger Wattenhofer

Spaceborne synthetic aperture radar (SAR) can provide accurate images of the ocean surface roughness day-or-night in nearly all weather conditions, being an unique asset for many geophysical applications. Considering the huge amount of data…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Nicolae-Cătălin Ristea , Andrei Anghel , Mihai Datcu , Bertrand Chapron

We study synthetic aperture radar (SAR) imaging and motion estimation of complex scenes consisting of stationary and moving targets. We use the classic SAR setup with a single antenna emitting signals and receiving the echoes from the…

Numerical Analysis · Mathematics 2015-06-11 Liliana Borcea , Thomas Callaghan , George Papanicolaou

Deep Learning (DL) Models for Synthetic Aperture Radar (SAR) Automatic Target Recognition (ATR), while delivering improved performance, have been shown to be quite vulnerable to adversarial attacks. Existing works improve robustness by…

Computer Vision and Pattern Recognition · Computer Science 2024-04-05 Xu Wang , Tian Ye , Rajgopal Kannan , Viktor Prasanna

Recently, there has been increasing concern about the vulnerability of deep neural network (DNN)-based synthetic aperture radar (SAR) automatic target recognition (ATR) to adversarial attacks, where a DNN could be easily deceived by clean…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Bowen Peng , Bo Peng , Jingyuan Xia , Tianpeng Liu , Yongxiang Liu , Li Liu