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In Magnetic Resonance Imaging (MRI), image acquisitions are often undersampled in the measurement domain to accelerate the scanning process, at the expense of image quality. However, image quality is a crucial factor that influences the…

图像与视频处理 · 电气工程与系统科学 2024-05-31 Mevan Ekanayake , Zhifeng Chen , Mehrtash Harandi , Gary Egan , Zhaolin Chen

Millimeter wave (mmWave) radars have attracted significant attention from both academia and industry due to their capability to operate in extreme weather conditions. However, they face challenges in terms of sparsity and noise…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Ruibin Zhang , Donglai Xue , Yuhan Wang , Ruixu Geng , Fei Gao

Deep reinforcement learning (DRL) demonstrates great potential in mapless navigation domain. However, such a navigation model is normally restricted to a fixed configuration of the range sensor because its input format is fixed. In this…

机器人学 · 计算机科学 2021-03-12 Wei Zhang , Ning Liu , Yunfeng Zhang

How can a robot safely navigate around people with complex motion patterns? Deep Reinforcement Learning (DRL) in simulation holds some promise, but much prior work relies on simulators that fail to capture the nuances of real human motion.…

机器人学 · 计算机科学 2025-02-17 James R. Han , Hugues Thomas , Jian Zhang , Nicholas Rhinehart , Timothy D. Barfoot

Deep Reinforcement Learning (DRL) based navigation methods have demonstrated promising results for mobile robots, but suffer from limited action flexibility in confined spaces. Conventional DRL approaches predominantly learn forward-motion…

机器人学 · 计算机科学 2025-04-01 Shanze Wang , Mingao Tan , Zhibo Yang , Biao Huang , Xiaoyu Shen , Hailong Huang , Wei Zhang

Deep reinforcement learning (DRL) has been widely applied in autonomous exploration and mapping tasks, but often struggles with the challenges of sampling efficiency, poor adaptability to unknown map sizes, and slow simulation speed. To…

机器人学 · 计算机科学 2023-02-28 Zhi Li , Jinghao Xin , Ning Li

Motivated by the growing interest in integrated sensing and communication for 6th generation (6G) networks, this paper presents a cognitive Multiple-Input Multiple-Output (MIMO) radar system enhanced by reinforcement learning (RL) for…

信号处理 · 电气工程与系统科学 2025-02-10 Adam Umra , Aya Mostafa Ahmed , Aydin Sezgin

Improving sample efficiency is a key research problem in reinforcement learning (RL), and CURL, which uses contrastive learning to extract high-level features from raw pixels of individual video frames, is an efficient…

机器学习 · 计算机科学 2020-10-16 Jinhua Zhu , Yingce Xia , Lijun Wu , Jiajun Deng , Wengang Zhou , Tao Qin , Houqiang Li

Automated driving at unsignalized intersections is challenging due to complex multi-vehicle interactions and the need to balance safety and efficiency. Model Predictive Control (MPC) offers structured constraint handling through…

机器人学 · 计算机科学 2026-04-16 Saeed Rahmani , Gözde Körpe , Zhenlin , Xu , Bruno Brito , Simeon Craig Calvert , Bart van Arem

Current state-of-the-art crowd navigation approaches are mainly deep reinforcement learning (DRL)-based. However, DRL-based methods suffer from the issues of generalization and scalability. To overcome these challenges, we propose a method…

机器人学 · 计算机科学 2023-09-26 Hafiq Anas , Ong Wee Hong , Owais Ahmed Malik

Reinforcement Learning (RL) has presented an impressive performance in video games through raw pixel imaging and continuous control tasks. However, RL performs poorly with high-dimensional observations such as raw pixel images. It is…

Soft robotic crawlers are mobile robots that utilize soft body deformability and compliance to achieve locomotion through surface contact. Designing control strategies for such systems is challenging due to model inaccuracies, sensor noise,…

机器人学 · 计算机科学 2025-10-08 Vaughn Gzenda , Robin Chhabra

Robotic navigation in environments shared with other robots or humans remains challenging because the intentions of the surrounding agents are not directly observable and the environment conditions are continuously changing. Local…

机器人学 · 计算机科学 2021-03-01 Bruno Brito , Michael Everett , Jonathan P. How , Javier Alonso-Mora

In this paper, a novel deep reinforcement learning (DRL)-based method is proposed to navigate the robot team through unknown complex environments, where the geometric centroid of the robot team aims to reach the goal position while avoiding…

机器人学 · 计算机科学 2019-07-04 Juntong Lin , Xuyun Yang , Peiwei Zheng , Hui Cheng

Deep Reinforcement learning (DRL) is used to enable autonomous navigation in unknown environments. Most research assume perfect sensor data, but real-world environments may contain natural and artificial sensor noise and denial. Here, we…

机器人学 · 计算机科学 2024-10-21 Mariusz Wisniewski , Paraskevas Chatzithanos , Weisi Guo , Antonios Tsourdos

This paper presents a cross-modal learning framework that exploits complementary information from depth and grayscale images for robust navigation. We introduce a Cross-Modal Wasserstein Autoencoder that learns shared latent representations…

机器人学 · 计算机科学 2026-03-24 Omkar Sawant , Luca Zanatta , Grzegorz Malczyk , Kostas Alexis

Low-cost cross-modal representation learning is crucial for deriving semantic representations across diverse modalities such as text, audio, images, and video. Traditional approaches typically depend on large specialized models trained from…

机器学习 · 计算机科学 2024-09-10 Bilal Faye , Hanane Azzag , Mustapha Lebbah , Djamel Bouchaffra

Long-range indoor navigation requires guiding robots with noisy sensors and controls through cluttered environments along paths that span a variety of buildings. We achieve this with PRM-RL, a hierarchical robot navigation method in which…

Multi-robot navigation is a challenging task in which multiple robots must be coordinated simultaneously within dynamic environments. We apply deep reinforcement learning (DRL) to learn a decentralized end-to-end policy which maps raw…

机器人学 · 计算机科学 2022-09-08 Christian Jestel , Hartmut Surmann , Jonas Stenzel , Oliver Urbann , Marius Brehler

Self-supervised Contrastive Learning (CL) has been recently shown to be very effective in preventing deep networks from overfitting noisy labels. Despite its empirical success, the theoretical understanding of the effect of contrastive…

机器学习 · 计算机科学 2022-07-06 Yihao Xue , Kyle Whitecross , Baharan Mirzasoleiman