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The electromagnetic inverse problem has long been a research hotspot. This study aims to reverse radar view angles in synthetic aperture radar (SAR) images given a target model. Nonetheless, the scarcity of SAR data, combined with the…

机器学习 · 计算机科学 2024-01-03 Yanni Wang , Hecheng Jia , Shilei Fu , Huiping Lin , Feng Xu

Adaptive radiotherapy (ART), especially online ART, effectively accounts for positioning errors and anatomical changes. One key component of online ART is accurately and efficiently delineating organs at risk (OARs) and targets on online…

Augmented reality (AR) guidance in laparoscopic liver surgery requires accurate registration of preoperative 3D models to intraoperative 2D video, but remains challenging due to partial visibility, specularities, and tissue deformation.…

We present a generic Reinforcement Learning (RL) framework optimized for crafting adversarial attacks on different model types spanning from ECG signal analysis (1D), image classification (2D), and video classification (3D). The framework…

Computed Tomography (CT) takes X-ray measurements on the subjects to reconstruct tomographic images. As X-ray is radioactive, it is desirable to control the total amount of dose of X-ray for safety concerns. Therefore, we can only select a…

医学物理 · 物理学 2021-09-15 Ziju Shen , Yufei Wang , Dufan Wu , Xu Yang , Bin Dong

In reinforcement learning (RL), value-based algorithms learn to associate each observation with the states and rewards that are likely to be reached from it. We observe that many self-supervised image pre-training methods bear similarity to…

机器学习 · 计算机科学 2025-06-16 Dibya Ghosh , Sergey Levine

Conventional deformable registration methods aim at solving an optimization model carefully designed on image pairs and their computational costs are exceptionally high. In contrast, recent deep learning based approaches can provide fast…

计算机视觉与模式识别 · 计算机科学 2021-10-01 Risheng Liu , Zi Li , Xin Fan , Chenying Zhao , Hao Huang , Zhongxuan Luo

Autonomous manipulation of granular media, such as sand, is crucial for applications in construction, excavation, and additive manufacturing. However, shaping granular materials presents unique challenges due to their high-dimensional…

机器人学 · 计算机科学 2025-09-10 Benedikt Kreis , Malte Mosbach , Anny Ripke , Muhammad Ehsan Ullah , Sven Behnke , Maren Bennewitz

Safe and efficient autonomous driving maneuvers in an interactive and complex environment can be considerably challenging due to the unpredictable actions of other surrounding agents that may be cooperative or adversarial in their…

机器人学 · 计算机科学 2019-01-28 Pin Wang , Ching-Yao Chan , Hanhan Li

Reinforcement Learning (RL) is a powerful method for controlling dynamic systems, but its learning mechanism can lead to unpredictable actions that undermine the safety of critical systems. Here, we propose RL with Adaptive Regularization…

机器学习 · 计算机科学 2024-11-01 Haozhe Tian , Homayoun Hamedmoghadam , Robert Shorten , Pietro Ferraro

This paper presents the first deep reinforcement learning (DRL) framework to estimate the optimal Dynamic Treatment Regimes from observational medical data. This framework is more flexible and adaptive for high dimensional action and state…

人工智能 · 计算机科学 2018-01-30 Ning Liu , Ying Liu , Brent Logan , Zhiyuan Xu , Jian Tang , Yanzhi Wang

CT and MRI are two of the most informative modalities in spinal diagnostics and treatment planning. CT is useful when analysing bony structures, while MRI gives information about the soft tissue. Thus, fusing the information of both…

Deep learning (DL) image registration methods amortize the costly pair-wise iterative optimization by training deep neural networks to predict the optimal transformation in one fast forward-pass. In this work, we bridge the gap between…

图像与视频处理 · 电气工程与系统科学 2022-09-13 Huaqi Qiu , Kerstin Hammernik , Chen Qin , Chen Chen , Daniel Rueckert

Medical image registration is critical for aligning anatomical structures across imaging modalities such as computed tomography (CT), magnetic resonance imaging (MRI), and ultrasound. Among existing techniques, non-rigid registration (NRR)…

图像与视频处理 · 电气工程与系统科学 2025-12-17 Sneha Sree C. , Dattesh Shanbhag , Sudhanya Chatterjee

Intelligent video summarization algorithms allow to quickly convey the most relevant information in videos through the identification of the most essential and explanatory content while removing redundant video frames. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2022-02-16 Tianrui Liu , Qingjie Meng , Jun-Jie Huang , Athanasios Vlontzos , Daniel Rueckert , Bernhard Kainz

Learning-based approaches, such as reinforcement learning (RL) and imitation learning (IL), have indicated superiority over rule-based approaches in complex urban autonomous driving environments, showing great potential to make intelligent…

机器人学 · 计算机科学 2022-05-31 Haochen Liu , Zhiyu Huang , Jingda Wu , Chen Lv

Image registration and in particular deformable registration methods are pillars of medical imaging. Inspired by the recent advances in deep learning, we propose in this paper, a novel convolutional neural network architecture that couples…

Recent unsupervised pre-training methods have shown to be effective on language and vision domains by learning useful representations for multiple downstream tasks. In this paper, we investigate if such unsupervised pre-training methods can…

计算机视觉与模式识别 · 计算机科学 2022-06-20 Younggyo Seo , Kimin Lee , Stephen James , Pieter Abbeel

Multi-rotor UAVs suffer from a restricted range and flight duration due to limited battery capacity. Autonomous landing on a 2D moving platform offers the possibility to replenish batteries and offload data, thus increasing the utility of…

机器人学 · 计算机科学 2024-05-17 Pascal Goldschmid , Aamir Ahmad

We propose a supervised nonrigid image registration method, trained using artificial displacement vector fields (DVF), for which we propose and compare three network architectures. The artificial DVFs allow training in a fully supervised…

图像与视频处理 · 电气工程与系统科学 2019-08-28 Hessam Sokooti , Bob de Vos , Floris Berendsen , Mohsen Ghafoorian , Sahar Yousefi , Boudewijn P. F. Lelieveldt , Ivana Isgum , Marius Staring