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Purpose: To develop a pipeline for motion artifact correction in mGRE and quantitative susceptibility mapping (QSM). Methods: Deep learning is integrated with autofocus to improve motion artifact suppression, which is applied QSM of…

信号处理 · 电气工程与系统科学 2024-05-28 Chao Li , Jinwei Zhang , Hang Zhang , Jiahao Li , Pascal Spincemaille , Thanh D. Nguyen , Yi Wang

We propose UNSURF, a novel uncertainty measure for cortical surface reconstruction of clinical brain MRI scans of any orientation, resolution, and contrast. It relies on the discrepancy between predicted voxel-wise signed distance functions…

图像与视频处理 · 电气工程与系统科学 2025-07-08 Raghav Mehta , Karthik Gopinath , Ben Glocker , Juan Eugenio Iglesias

Classical self-supervised networks suffer from convergence problems and reduced segmentation accuracy due to forceful termination. Qubits or bi-level quantum bits often describe quantum neural network models. In this article, a novel…

Quantum Machine Learning (QML) has surfaced as a pioneering framework addressing sequential control tasks and time-series modeling. It has demonstrated empirical quantum advantages notably within domains such as Reinforcement Learning (RL)…

量子物理 · 物理学 2024-02-28 Samuel Yen-Chi Chen

Pixel-aligned implicit models, such as PIFu, PIFuHD, and ICON, are used for single-view clothed human reconstruction. These models need to be trained using a sampling training scheme. Existing sampling training schemes either fail to…

计算机视觉与模式识别 · 计算机科学 2024-11-12 Kennard Yanting Chan , Fayao Liu , Guosheng Lin , Chuan Sheng Foo , Weisi Lin

Purpose: To improve reconstruction fidelity of fine structures and textures in deep learning (DL) based reconstructions. Methods: A novel patch-based Unsupervised Feature Loss (UFLoss) is proposed and incorporated into the training of…

图像与视频处理 · 电气工程与系统科学 2021-08-31 Ke Wang , Jonathan I Tamir , Alfredo De Goyeneche , Uri Wollner , Rafi Brada , Stella Yu , Michael Lustig

Among the flourishing research of weakly supervised learning (WSL), we recognize the lack of a unified interpretation of the mechanism behind the weakly supervised scenarios, let alone a systematic treatment of the risk rewrite problem, a…

机器学习 · 计算机科学 2023-09-18 Chao-Kai Chiang , Masashi Sugiyama

Quantitative MRI (qMRI) estimates tissue properties of interest from measured MRI signals. This process is conventionally achieved by model fitting, whose computational expense limits qMRI's clinical use, motivating recent development of…

医学物理 · 物理学 2025-10-10 Giulio V. Minore , Louis Dwyer-Hemmings , Timothy J. P. Bray , Hui Zhang

Weakly Supervised Semantic Segmentation (WSSS) with image-level labels has long been suffering from fragmentary object regions led by Class Activation Map (CAM), which is incapable of generating fine-grained masks for semantic segmentation.…

计算机视觉与模式识别 · 计算机科学 2023-03-07 Jiren Mai , Fei Zhang , Junjie Ye , Marcus Kalander , Xian Zhang , WanKou Yang , Tongliang Liu , Bo Han

We study the morphology of convergence maps by perturbatively reconstructing their Minkowski Functionals (MFs). We present a systematics study using a set of three generalised skew-spectra as a function of source redshift and smoothing…

宇宙学与河外天体物理 · 物理学 2021-09-01 D. Munshi , T. Namikawa , J. D. McEwen , T. D. Kitching , F. R. Bouchet

We propose a weakly-supervised multi-view learning approach to learn category-specific surface mapping without dense annotations. We learn the underlying surface geometry of common categories, such as human faces, cars, and airplanes, given…

计算机视觉与模式识别 · 计算机科学 2021-05-05 Nishant Rai , Aidas Liaudanskas , Srinivas Rao , Rodrigo Ortiz Cayon , Matteo Munaro , Stefan Holzer

Weakly supervised semantic segmentation (WSSS) methods using class labels often rely on class activation maps (CAMs) to localize objects. However, traditional CAM-based methods struggle with partial activations and imprecise object…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Dewen Zeng , Xinrong Hu , Yu-Jen Chen , Yawen Wu , Xiaowei Xu , Yiyu Shi

Weakly Supervised Object Localization (WSOL), which aims to localize objects by only using image-level labels, has attracted much attention because of its low annotation cost in real applications. Recent studies leverage the advantage of…

计算机视觉与模式识别 · 计算机科学 2023-03-13 Haotian Bai , Ruimao Zhang , Jiong Wang , Xiang Wan

Magnetic resonance imaging (MRI) is a cornerstone of clinical neuroimaging, yet conventional MRIs provide qualitative information heavily dependent on scanner hardware and acquisition settings. While quantitative MRI (qMRI) offers intrinsic…

Susceptibility Map Weighted Imaging (SMWI) is an advanced magnetic resonance imaging technique used to detect nigral hyperintensity in Parkinsons disease. However, full resolution SMWI acquisition is limited by long scan times. Efficient…

图像与视频处理 · 电气工程与系统科学 2025-12-30 Muhammad Usman , Sung-Min Gho

Full-waveform inversion (FWI) is a high-resolution seismic imaging method that estimates subsurface velocity by matching simulated and recorded waveforms. However, FWI is highly nonlinear, prone to cycle skipping, and sensitive to noise,…

机器学习 · 计算机科学 2026-03-17 Xinquan Huang , Paris Perdikaris

Using single-task deep learning methods to reconstruct Magnetic Resonance Imaging (MRI) data acquired with different imaging sequences is inherently challenging. The trained deep learning model typically lacks generalizability, and the…

图像与视频处理 · 电气工程与系统科学 2024-04-23 Wanyu Bian , Albert Jang , Fang Liu

Dynamic MRI suffers from limited spatiotemporal resolution due to long acquisition times. Undersampling k-space accelerates imaging but makes accurate reconstruction challenging. Supervised deep learning methods achieve impressive results…

图像与视频处理 · 电气工程与系统科学 2025-11-18 Yuanyuan Liu , Yuanbiao Yang , Jing Cheng , Zhuo-Xu Cui , Qingyong Zhu , Congcong Liu , Yuliang Zhu , Jingran Xu , Hairong Zheng , Dong Liang , Yanjie Zhu

Machine Learning (ML) is increasingly being used for computer aided diagnosis of brain related disorders based on structural magnetic resonance imaging (MRI) data. Most of such work employs biologically and medically meaningful hand-crafted…

机器学习 · 计算机科学 2018-05-04 Ayush Jaiswal , Dong Guo , Cauligi S. Raghavendra , Paul Thompson

Reconfigurable intelligent surfaces (RIS) can improve signal propagation environments by adjusting the phase of the incident signal. However, optimizing the phase shifts jointly with the beamforming vector at the access point is challenging…

信号处理 · 电气工程与系统科学 2024-10-28 Weijie Jin , Jing Zhang , Chao-Kai Wen , Shi Jin , Xiao Li , Shuangfeng Han