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We propose a novel unsupervised deep-learning-based algorithm for dynamic magnetic resonance imaging (MRI) reconstruction. Dynamic MRI requires rapid data acquisition for the study of moving organs such as the heart. Existing reconstruction…

图像与视频处理 · 电气工程与系统科学 2021-01-26 Jaejun Yoo , Kyong Hwan Jin , Harshit Gupta , Jerome Yerly , Matthias Stuber , Michael Unser

Modelling deformation of anatomical objects observed in medical images can help describe disease progression patterns and variations in anatomy across populations. We apply a stochastic generalisation of the Large Deformation Diffeomorphic…

统计理论 · 数学 2018-12-14 Line Kühnel , Alexis Arnaudon , Tom Fletcher , Stefan Sommer

Image animation is the task of transferring the motion of a driving video to a given object in a source image. While great progress has recently been made in unsupervised motion transfer, requiring no labeled data or domain priors, many…

计算机视觉与模式识别 · 计算机科学 2023-11-21 Peirong Liu , Rui Wang , Xuefei Cao , Yipin Zhou , Ashish Shah , Ser-Nam Lim

Purpose: Surgical scene understanding plays a critical role in the technology stack of tomorrow's intervention-assisting systems in endoscopic surgeries. For this, tracking the endoscope pose is a key component, but remains challenging due…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Michel Hayoz , Christopher Hahne , Mathias Gallardo , Daniel Candinas , Thomas Kurmann , Maximilian Allan , Raphael Sznitman

3D motion estimation from cine cardiac magnetic resonance (CMR) images is important for the assessment of cardiac function and the diagnosis of cardiovascular diseases. Current state-of-the art methods focus on estimating dense…

图像与视频处理 · 电气工程与系统科学 2023-09-26 Qingjie Meng , Wenjia Bai , Declan P O'Regan , and Daniel Rueckert

In-scanner motion degrades the quality of magnetic resonance imaging (MRI) thereby reducing its utility in the detection of clinically relevant abnormalities. We introduce a deep learning-based MRI artifact reduction model (DMAR) to…

图像与视频处理 · 电气工程与系统科学 2020-11-03 Yijun Zhao , Jacek Ossowski , Xuming Wang , Shangjin Li , Orrin Devinsky , Samantha P. Martin , Heath R. Pardoe

In conventional 2D DCE-US, motion correction algorithms take advantage of accompanying side-by-side anatomical Bmode images that contain time-stable features. However, current commercial models of 3D DCE-US do not provide side-by-side Bmode…

We propose a novel shape-aware relation network for accurate and real-time landmark detection in endoscopic submucosal dissection (ESD) surgery. This task is of great clinical significance but extremely challenging due to bleeding, lighting…

图像与视频处理 · 电气工程与系统科学 2021-11-10 Jiacheng Wang , Yueming Jin , Shuntian Cai , Hongzhi Xu , Pheng-Ann Heng , Jing Qin , Liansheng Wang

A major challenge of the long measurement times in magnetic resonance imaging (MRI), an important medical imaging technology, is that patients may move during data acquisition. This leads to severe motion artifacts in the reconstructed…

图像与视频处理 · 电气工程与系统科学 2024-09-17 Tobit Klug , Kun Wang , Stefan Ruschke , Reinhard Heckel

Data-driven modeling of human motions is ubiquitous in computer graphics and computer vision applications, such as synthesizing realistic motions or recognizing actions. Recent research has shown that such problems can be approached by…

图形学 · 计算机科学 2019-08-21 He Wang , Edmond S. L. Ho , Hubert P. H. Shum , Zhanxing Zhu

We propose a new approach to learn to segment multiple image objects without manual supervision. The method can extract objects form still images, but uses videos for supervision. While prior works have considered motion for segmentation, a…

计算机视觉与模式识别 · 计算机科学 2022-10-24 Laurynas Karazija , Subhabrata Choudhury , Iro Laina , Christian Rupprecht , Andrea Vedaldi

In scanning microscopy based imaging techniques, there is a need to develop novel data acquisition schemes that can reduce the time for data acquisition and minimize sample exposure to the probing radiation. Sparse sampling schemes are…

信号处理 · 电气工程与系统科学 2018-03-09 Yan Zhang , G. M. Dilshan Godaliyadda , Nicola Ferrier , Emine B. Gulsoy , Charles A. Bouman , Charudatta Phatak

Easy access to precise 3D tracking of movement could benefit many aspects of rehabilitation. A challenge to achieving this goal is that while there are many datasets and pretrained algorithms for able-bodied adults, algorithms trained on…

计算机视觉与模式识别 · 计算机科学 2023-10-31 R. James Cotton , Colleen Peyton

For safety-critical robotics applications such as autonomous driving, it is important to detect all required objects accurately in real-time. Motion segmentation offers a solution by identifying dynamic objects from the scene in a…

计算机视觉与模式识别 · 计算机科学 2025-07-18 Riku Inoue , Masamitsu Tsuchiya , Yuji Yasui

With the development of Deep Neural Networks (DNNs), many efforts have been made to handle medical image segmentation. Traditional methods such as nnUNet train specific segmentation models on the individual datasets. Plenty of recent…

计算机视觉与模式识别 · 计算机科学 2024-07-12 Xiaobao Wei , Jiajun Cao , Yizhu Jin , Ming Lu , Guangyu Wang , Shanghang Zhang

Correctly perceiving micro-expression is difficult since micro-expression is an involuntary, repressed, and subtle facial expression, and efficiently revealing the subtle movement changes and capturing the significant segments in a…

计算机视觉与模式识别 · 计算机科学 2020-10-20 Jiateng Liu , Wenming Zheng , Yuan Zong

Markerless estimation of 3D Kinematics has the great potential to clinically diagnose and monitor movement disorders without referrals to expensive motion capture labs; however, current approaches are limited by performing multiple…

计算机视觉与模式识别 · 计算机科学 2023-01-16 Marian Bittner , Wei-Tse Yang , Xucong Zhang , Ajay Seth , Jan van Gemert , Frans C. T. van der Helm

3D image segmentation is a recent and crucial step in many medical analysis and recognition schemes. In fact, it represents a relevant research subject and a fundamental challenge due to its importance and influence. This paper provides a…

图像与视频处理 · 电气工程与系统科学 2022-07-22 Omar Boudraa

Electrical conduction among cardiac tissue is commonly modeled with partial differential equations, i.e., reaction-diffusion equation, where the reaction term describes cellular stimulation and diffusion term describes electrical…

机器学习 · 计算机科学 2021-09-21 Xinyu Zhao , Hao Yan , Zhiyong Hu , Dongping Du

In the field of medical image analysis, deep learning models have demonstrated remarkable success in enhancing diagnostic accuracy and efficiency. However, the reliability of these models is heavily dependent on the quality of training…

图像与视频处理 · 电气工程与系统科学 2024-07-12 Maolin Li , Giacomo Tarroni