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In the realm of automated robotic surgery and computer-assisted interventions, understanding robotic surgical activities stands paramount. Existing algorithms dedicated to surgical activity recognition predominantly cater to pre-defined…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Long Bai , Guankun Wang , Jie Wang , Xiaoxiao Yang , Huxin Gao , Xin Liang , An Wang , Mobarakol Islam , Hongliang Ren

We consider the problem in Synthetic Aperture RADAR (SAR) of identifying and classifying objects located on the ground by means of Convolutional Neural Networks (CNNs). Specifically, we adopt a single scattering approximation to classify…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Romina Gaburro , Patrick Healy , Shraddha Naidu , Clifford Nolan

Shadows are a prevalent problem in remote sensing imagery (RSI), degrading visual quality and severely limiting the performance of downstream tasks like object detection and semantic segmentation. Most prior works treat shadow detection and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Zi-Yang Bo , Wei Lu , Hongruixuan Chen , Si-Bao Chen , Bin Luo

Rotation detection serves as a fundamental building block in many visual applications involving aerial image, scene text, and face etc. Differing from the dominant regression-based approaches for orientation estimation, this paper explores…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Xue Yang , Liping Hou , Yue Zhou , Wentao Wang , Junchi Yan

An algorithm based on compressive sensing (CS) is proposed for synthetic aperture radar (SAR) imaging of moving targets. The received SAR echo is decomposed into the sum of basis sub-signals, which are generated by discretizing the target…

Information Theory · Computer Science 2011-04-07 Jun Wang , Gang Li , Hao Zhang , Xiqin Wang

Machine learning-based techniques open up many opportunities and improvements to derive deeper and more practical insights from data that can help businesses make informed decisions. However, the majority of these techniques focus on the…

Machine Learning · Computer Science 2024-05-10 Atefeh Mahdavi , Marco Carvalho

Arbitrary-oriented object detection has been a building block for rotation sensitive tasks. We first show that the boundary problem suffered in existing dominant regression-based rotation detectors, is caused by angular periodicity or…

Computer Vision and Pattern Recognition · Computer Science 2022-03-24 Xue Yang , Junchi Yan

The joint interpretation of very high resolution SAR and optical images in dense urban area are not trivial due to the distinct imaging geometry of the two types of images. Especially, the inevitable layover caused by the side-looking SAR…

Signal Processing · Electrical Eng. & Systems 2018-01-24 Yuanyuan Wang , Xiao Xiang Zhu

Automatic detection of weapons is significant for improving security and well being of individuals, nonetheless, it is a difficult task due to large variety of size, shape and appearance of weapons. View point variations and occlusion also…

Computer Vision and Pattern Recognition · Computer Science 2022-09-22 Nazeef Ul Haq , Muhammad Moazam Fraz , Tufail Sajjad Shah Hashmi , Muhammad Shahzad

We introduce Stochastic Asymptotical Regularization (SAR) methods for the uncertainty quantification of the stable approximate solution of ill-posed linear-operator equations, which are deterministic models for numerous inverse problems in…

Numerical Analysis · Mathematics 2022-12-21 Ye Zhang , Chuchu Chen

This thesis is concerned with problems related to Synthetic Aperture Radar (SAR). The thesis is structured as follows: The first chapter explains what SAR is, and the physical and mathematical background is illuminated. The following…

Classical Analysis and ODEs · Mathematics 2010-10-26 Jens Klein

Recommender systems (RecSys) have become essential in modern society, driving user engagement and satisfaction across diverse online platforms. Most RecSys focuses on designing a powerful encoder to embed users and items into…

Information Retrieval · Computer Science 2025-03-25 Xi Wu , Dan Zhang , Chao Zhou , Liangwei Yang , Tianyu Lin , Jibing Gong

In remote sensing rotated object detection, mainstream methods suffer from two bottlenecks, directional incoherence at detector neck and task conflict at detecting head. Ulitising fourier rotation equivariance, we introduce Fourier Angle…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Changyu Gu , Linwei Chen , Lin Gu , Ying Fu

Semantic 3D city models are worldwide easy-accessible, providing accurate, object-oriented, and semantic-rich 3D priors. To date, their potential to mitigate the noise impact on radar object detection remains under-explored. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Yuan Luo , Rudolf Hoffmann , Yan Xia , Olaf Wysocki , Benedikt Schwab , Thomas H. Kolbe , Daniel Cremers

Advances in high resolution remote sensing image analysis are currently hampered by the difficulty of gathering enough annotated data for training deep learning methods, giving rise to a variety of small datasets and associated…

Computer Vision and Pattern Recognition · Computer Science 2023-03-08 Dimitri Gominski , Valérie Gouet-Brunet , Liming Chen

Detecting oriented objects along with estimating their rotation information is one crucial step for analyzing remote sensing images. Despite that many methods proposed recently have achieved remarkable performance, most of them directly…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Yanjie Wang , Xu Zou , Zhijun Zhang , Wenhui Xu , Liqun Chen , Sheng Zhong , Luxin Yan , Guodong Wang

We present the first algorithm to efficiently compute certifiably optimal solutions to range-aided simultaneous localization and mapping (RA-SLAM) problems. Robotic navigation systems increasingly incorporate point-to-point ranging sensors,…

Automotive synthetic aperture radar (SAR) can achieve a significant angular resolution enhancement for detecting static objects, which is essential for automated driving. Obtaining high resolution SAR images requires precise ego vehicle…

Signal Processing · Electrical Eng. & Systems 2022-04-25 Oded Bialer , Tom Tirer

Regression-based LiDAR relocalization has recently emerged as a promising solution for high-precision positioning in GNSS-denied environments. However, these methods are primarily tailored to autonomous driving, exhibiting significantly…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Hengyu Mu , Jianshi Wu , Yuxin Guo , XianLian Lin , Qingyong Hu , Sheng Ao , Chenglu Wen , Cheng Wang

Deep unfolding networks have recently emerged as a promising approach for synthetic aperture radar (SAR) imaging. However, baseline unfolding networks, typically derived from iterative reconstruction algorithms such as the alternating…

Signal Processing · Electrical Eng. & Systems 2025-06-27 Shiping Fu , Yufan Chen , Zhe Zhang , Xiaolan Qiu , Qixiang Ye