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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

A new algorithm has been developed for delineation of significant points of various electrocardiographic signal (ECG) waves, taking into account information from all available leads and providing similar or higher accuracy in comparison…

In cardiac magnetic resonance (CMR) imaging, a 3D high-resolution segmentation of the heart is essential for detailed description of its anatomical structures. However, due to the limit of acquisition duration and respiratory/cardiac…

Image and Video Processing · Electrical Eng. & Systems 2021-07-09 Shuo Wang , Chen Qin , Nicolo Savioli , Chen Chen , Declan O'Regan , Stuart Cook , Yike Guo , Daniel Rueckert , Wenjia Bai

Four-dimensional (4D) left ventricular myocardial velocity mapping (MVM) is a cardiac magnetic resonance (CMR) technique that allows assessment of cardiac motion in three orthogonal directions. Accurate and reproducible delineation of the…

Image and Video Processing · Electrical Eng. & Systems 2020-12-23 Yinzhe Wu , Suzan Hatipoglu , Diego Alonso-Álvarez , Peter Gatehouse , David Firmin , Jennifer Keegan , Guang Yang

Image-based computational fluid dynamics (CFD) has emerged as a powerful tool to study cardiovascular flows while 2D echocardiography (echo) is the most widely used non-invasive imaging modality for diagnosis of heart disease. Here, echo is…

We propose a novel algorithm to recover fetal electrocardiogram (ECG) for both the fetal heart rate analysis and morphological analysis of its waveform from two or three trans-abdominal maternal ECG channels. We design an algorithm based on…

Signal Processing · Electrical Eng. & Systems 2019-08-09 Pei-Chun Su , Stephen Miller , Salim Idriss , Piers Barker , Hau-Tieng Wu

This paper describe the features extraction algorithm for electrocardiogram (ECG) signal using Huang Hilbert Transform and Wavelet Transform. ECG signal for an individual human being is different due to unique heart structure. The purpose…

Computer Vision and Pattern Recognition · Computer Science 2019-08-15 Neha Soorma , Jaikaran Singh , Mukesh Tiwari

Myocardial contrast echocardiography (MCE) is an imaging technique that assesses left ventricle function and myocardial perfusion for the detection of coronary artery diseases. Automatic MCE perfusion quantification is challenging and…

Computer Vision and Pattern Recognition · Computer Science 2018-06-21 Yuanwei Li , Chin Pang Ho , Matthieu Toulemonde , Navtej Chahal , Roxy Senior , Meng-Xing Tang

Electrocardiogram (ECG) is a simple non-invasive measure to identify heart-related issues such as irregular heartbeats known as arrhythmias. While artificial intelligence and machine learning is being utilized in a wide range of healthcare…

Machine Learning · Computer Science 2022-07-11 Minh Cao , Tianqi Zhao , Yanxun Li , Wenhao Zhang , Peyman Benharash , Ramin Ramezani

Cardiac left ventricular (LV) segmentation from short-axis MRI acquired 10 minutes after the injection of a contrast agent (LGE-MRI) is a necessary step in the processing allowing the identification and diagnosis of cardiac diseases such as…

Image and Video Processing · Electrical Eng. & Systems 2020-06-02 Abdul Qayyum , Alain Lalande , Thomas Decourselle , Thibaut Pommier , Alexandre Cochet , Fabrice Meriaudeau

In this report, I investigate the use of end-to-end deep residual learning with dilated convolutions for myocardial infarction (MI) detection and localization from electrocardiogram (ECG) signals. Although deep residual learning has already…

Image and Video Processing · Electrical Eng. & Systems 2019-10-01 Iván López-Espejo

Left ventricular ejection fraction (LVEF) assessment depends on echocardiography, limiting access in primary care and resource-constrained settings. We developed a multimodal machine-learning framework that combines engineered 12-lead ECG…

Machine Learning · Computer Science 2026-04-30 Catherine Ning , Yu Ma , Cindy Beini Wang , Sean McMahon , Joseph Radojevic , Steven Zweibel , Dimitris Bertsimas

This paper provides a mathematical analysis of ultrafast ultrasound imaging. This newly emerging modality for biomedical imaging uses plane waves instead of focused waves in order to achieve very high frame rates. We derive the point spread…

Numerical Analysis · Mathematics 2017-01-09 Giovanni S. Alberti , Habib Ammari , Francisco Romero , Timothée Wintz

Ultrasound Computed Tomography (USCT) has great potential for 3D quantitative imaging of acoustic breast tissue properties. Typical devices include high-frequency transducers, which makes tomography techniques based on numerical wave…

Medical Physics · Physics 2019-08-12 N. Korta Martiartu , C. Boehm , A. Fichtner

Thanks to its capability of acquiring full-view frames at multiple kilohertz, ultrafast ultrasound imaging unlocked the analysis of rapidly changing physical phenomena in the human body, with pioneering applications such as ultrasensitive…

Image and Video Processing · Electrical Eng. & Systems 2020-12-22 Dimitris Perdios , Manuel Vonlanthen , Florian Martinez , Marcel Arditi , Jean-Philippe Thiran

The segmentation of the mitral valve annulus and leaflets specifies a crucial first step to establish a machine learning pipeline that can support physicians in performing multiple tasks, e.g.\ diagnosis of mitral valve diseases, surgical…

Image and Video Processing · Electrical Eng. & Systems 2020-08-14 Luca Corinzia , Fabian Laumer , Alessandro Candreva , Maurizio Taramasso , Francesco Maisano , Joachim M. Buhmann

Echocardiography provides an important tool for clinicians to observe the function of the heart in real time, at low cost, and without harmful radiation. Automated localization and classification of heart valves enables automatic extraction…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Derya Gol Gungor , Bimba Rao , Cynthia Wolverton , Ismayil Guracar

With the increase in health consciousness, noninvasive body monitoring has aroused interest among researchers. As one of the most important pieces of physiological information, researchers have remotely estimated the heart rate (HR) from…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Ying Qiu , Yang Liu , Juan Arteaga-Falconi , Haiwei Dong , Abdulmotaleb El Saddik

The enormous data volume of video poses a significant burden on the network. Particularly, transferring high-definition surveillance videos to the cloud consumes a significant amount of spectrum resources. To address these issues, we…

Image and Video Processing · Electrical Eng. & Systems 2023-11-09 Dingxi Yang , Zhijin Qin , Liting Wang , Xiaoming Tao , Fang Cui , Hengjiang Wang

Classifying videos into distinct categories, such as Sport and Music Video, is crucial for multimedia understanding and retrieval, especially when an immense volume of video content is being constantly generated. Traditional methods require…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Yuxing Han , Yunan Ding , Chen Ye Gan , Jiangtao Wen
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