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When taking images of some occluded content, one is often faced with the problem that every individual image frame contains unwanted artifacts, but a collection of images contains all relevant information if properly aligned and aggregated.…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Monika Kwiatkowski , Simon Matern , Olaf Hellwich

Reconfigurable intelligent surfaces (RISs) are envisioned to play a key role in future wireless communication networks. However, channel estimation in RIS-aided wireless networks is challenging due to their passive nature and the large…

Signal Processing · Electrical Eng. & Systems 2024-06-21 Sadjad Alikhani , Ahmed Alkhateeb

Advancements in deep generative models have made it possible to synthesize images, videos and audio signals that are difficult to distinguish from natural signals, creating opportunities for potential abuse of these capabilities. This…

Machine Learning · Computer Science 2020-11-17 Jamie Hayes , Krishnamurthy , Dvijotham , Yutian Chen , Sander Dieleman , Pushmeet Kohli , Norman Casagrande

Fine-Grained Image Retrieval~(FGIR) faces challenges in learning discriminative visual representations to retrieve images with similar fine-grained features. Current leading FGIR solutions typically follow two regimes: enforce pairwise…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Xin Jiang , Meiqi Cao , Hao Tang , Fei Shen , Zechao Li

Human body reconstruction with Millimeter Wave (mmWave) radar point clouds has gained significant interest due to its ability to work in adverse environments and its capacity to mitigate privacy concerns associated with traditional…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Jiarui Yang , Songpengcheng Xia , Yifan Song , Qi Wu , Ling Pei

Video understanding requires reasoning at multiple spatiotemporal resolutions -- from short fine-grained motions to events taking place over longer durations. Although transformer architectures have recently advanced the state-of-the-art,…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Shen Yan , Xuehan Xiong , Anurag Arnab , Zhichao Lu , Mi Zhang , Chen Sun , Cordelia Schmid

Unmanned aerial vehicle (UAV) tracking is critical for applications like surveillance, search-and-rescue, and autonomous navigation. However, the high-speed movement of UAVs and targets introduces unique challenges, including real-time…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 You Wu , Xucheng Wang , Dan Zeng , Hengzhou Ye , Xiaolan Xie , Qijun Zhao , Shuiwang Li

Machine learning tools are finding interesting applications in millimeter wave (mmWave) and massive MIMO systems. This is mainly thanks to their powerful capabilities in learning unknown models and tackling hard optimization problems. To…

Information Theory · Computer Science 2019-02-19 Ahmed Alkhateeb

Effective channel estimation in sparse and high-dimensional environments is essential for next-generation wireless systems, particularly in large-scale MIMO deployments. This paper introduces a novel framework that leverages digital twins…

Signal Processing · Electrical Eng. & Systems 2025-04-10 Sadjad Alikhani , Ahmed Alkhateeb

Multi-beam radar sensing systems are emerging as powerful tools for non-contact motion tracking and vital-sign monitoring in healthcare environments. This paper presents the design and experimental validation of a synchronized…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Mohammad Omid Bagheri , Justin Chow , Josh Visser , Veronica Leong , George Shaker

Sim2Real domain transfer offers a cost-effective and scalable approach for developing LiDAR-based perception (e.g., object detection, tracking, segmentation) in Intelligent Transportation Systems (ITS). However, perception models trained in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Muhammad Shahbaz , Shaurya Agarwal

Many tasks in video analysis and understanding boil down to the need for frame-based feature learning, aiming to encapsulate the relevant visual content so as to enable simpler and easier subsequent processing. While supervised strategies…

Computer Vision and Pattern Recognition · Computer Science 2023-02-09 Guy Bar-Shalom , George Leifman , Michael Elad , Ehud Rivlin

Video restoration (e.g., video super-resolution) aims to restore high-quality frames from low-quality frames. Different from single image restoration, video restoration generally requires to utilize temporal information from multiple…

Computer Vision and Pattern Recognition · Computer Science 2022-06-16 Jingyun Liang , Jiezhang Cao , Yuchen Fan , Kai Zhang , Rakesh Ranjan , Yawei Li , Radu Timofte , Luc Van Gool

In this paper, we propose a transformer based approach for visual grounding. Unlike previous proposal-and-rank frameworks that rely heavily on pretrained object detectors or proposal-free frameworks that upgrade an off-the-shelf one-stage…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Ye Du , Zehua Fu , Qingjie Liu , Yunhong Wang

With the popularity of multi-modal sensors, visible-thermal (RGB-T) object tracking is to achieve robust performance and wider application scenarios with the guidance of objects' temperature information. However, the lack of paired training…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Pengyu Zhang , Jie Zhao , Dong Wang , Huchuan Lu , Xiang Ruan

Subtle semantic differences in retinal image and text data present great challenges for pre-training visual-language models. Moreover, false negative samples, i.e., image-text pairs having the same semantics but incorrectly regarded as…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Shengzhu Yang , Jiawei Du , Jia Guo , Weihang Zhang , Hanruo Liu , Huiqi Li , Ningli Wang

Forecasting from partial observations is central to world modeling. Many recent methods represent the world through images, and reduce forecasting to stochastic video generation. Although such methods excel at realism and visual fidelity,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Gabrijel Boduljak , Yushi Lan , Christian Rupprecht , Andrea Vedaldi

Realistic signal generation and dataset augmentation are essential for advancing mmWave radar applications such as activity recognition and pose estimation, which rely heavily on diverse, and environment-specific signal datasets. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Mahathir Monjur , Shahriar Nirjon

Millimeter-wave (mmWave) technology is increasingly recognized as a pivotal technology of the sixth-generation communication networks due to the large amounts of available spectrum at high frequencies. However, the huge overhead associated…

Reliable and weather-robust perception systems are essential for safe autonomous driving and typically employ multi-modal sensor configurations to achieve comprehensive environmental awareness. While recent automotive FMCW Radar-based…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Christof Leitgeb , Thomas Puchleitner , Max Peter Ronecker , Daniel Watzenig