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Purpose: This study presents a variable resolution (VR) sampling and deep learning reconstruction approach for multi-spectral MRI near metal implants, aiming to reduce scan times while maintaining image quality. Background: The rising use…

Image and Video Processing · Electrical Eng. & Systems 2024-11-01 Azadeh Sharafi , Nikolai J. Mickevicius , Mehran Baboli , Andrew S. Nencka , Kevin M. Koch

Purpose: To develop an algorithm for real-time volumetric image reconstruction and 3D tumor localization based on a single x-ray projection image for lung cancer radiotherapy. Methods: Given a set of volumetric images of a patient at N…

Medical Physics · Physics 2015-05-18 Ruijiang Li , Xun Jia , John H. Lewis , Xuejun Gu , Michael Folkerts , Chunhua Men , Steve B. Jiang

Real-time (RT) dynamic MRI plays a vital role in capturing rapid physiological processes, offering unique insights into organ motion and function. Among these applications, RT cine MRI is particularly important for functional assessment of…

Image and Video Processing · Electrical Eng. & Systems 2025-05-02 Merve Gülle , Sebastian Weingärtner , Mehmet Akçakaya

Accurate endoscope pose estimation and 3D tissue surface reconstruction significantly enhances monocular minimally invasive surgical procedures by enabling accurate navigation and improved spatial awareness. However, monocular endoscope…

Computer Vision and Pattern Recognition · Computer Science 2025-08-18 Muzammil Khan , Enzo Kerkhof , Matteo Fusaglia , Koert Kuhlmann , Theo Ruers , Françoise J. Siepel

Endovascular guidewire manipulation is essential for minimally-invasive clinical applications (Percutaneous Coronary Intervention (PCI), Mechanical thrombectomy techniques for acute ischemic stroke (AIS), or Transjugular intrahepatic…

Robotics · Computer Science 2023-04-20 Young-Ho Kim , Èric Lluch , Gulsun Mehmet , Florin C. Ghesu , Ankur Kapoor

We propose a novel space-rescaling technique for registering dissimilar physical-virtual spaces by utilizing the effects of adjusting physical space with redirected walking. Achieving a seamless immersive Virtual Reality (VR) experience…

Human-Computer Interaction · Computer Science 2023-08-23 Dooyoung Kim , Woontack Woo

Computer vision and robotics are being increasingly applied in medical interventions. Especially in interventions where extreme precision is required they could make a difference. One such application is robot-assisted retinal microsurgery.…

Computer Vision and Pattern Recognition · Computer Science 2017-11-22 Thomas Probst , Kevis-Kokitsi Maninis , Ajad Chhatkuli , Mouloud Ourak , Emmanuel Vander Poorten , Luc Van Gool

Deep learning models in medical contexts face challenges like data scarcity, inhomogeneity, and privacy concerns. This study focuses on improving ventricular segmentation in brain MRI images using synthetic data. We employed two latent…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Tim Ruschke , Jonathan Frederik Carlsen , Adam Espe Hansen , Ulrich Lindberg , Amalie Monberg Hindsholm , Martin Norgaard , Claes Nøhr Ladefoged

To reconstruct a 3D scene from a set of calibrated views, traditional multi-view stereo techniques rely on two distinct stages: local depth maps computation and global depth maps fusion. Recent studies concentrate on deep neural…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Jaesung Choe , Sunghoon Im , Francois Rameau , Minjun Kang , In So Kweon

In endoscopic sinus surgery (ESS), intraoperative CT (iCT) offers valuable intraoperative assessment but is constrained by slow deployment and radiation exposure, limiting its clinical utility. Endoscope-based monocular 3D reconstruction is…

Image and Video Processing · Electrical Eng. & Systems 2025-03-03 Pengcheng Chen , Wenhao Li , Nicole Gunderson , Jeremy Ruthberg , Randall Bly , Zhenglong Sun , Waleed M. Abuzeid , Eric J. Seibel

Virtual Reality, and Extended Reality in general, connect the physical body with the virtual world. Movement of our body translates to interactions with this virtual world. Only by moving our head will we see a different perspective. By…

Multimedia · Computer Science 2022-12-09 Glenn Van Wallendael , Lucas Liegeois , Julie Artois , Peter Lambert

To support minimally-invasive intraoperative mitral valve repair, quantitative measurements from the valve can be obtained using an infra-red tracked stylus. It is desirable to view such manually measured points together with the endoscopic…

Computer Vision and Pattern Recognition · Computer Science 2022-01-27 Lukas Burger , Lalith Sharan , Samantha Fischer , Julian Brand , Maximillian Hehl , Gabriele Romano , Matthias Karck , Raffaele De Simone , Ivo Wolf , Sandy Engelhardt

Depth estimation is a cornerstone of a vast number of applications requiring 3D assessment of the environment, such as robotics, augmented reality, and autonomous driving to name a few. One prominent technique for depth estimation is stereo…

Computer Vision and Pattern Recognition · Computer Science 2021-12-16 Amit Bracha , Noam Rotstein , David Bensaïd , Ron Slossberg , Ron Kimmel

Purpose: Autonomous navigation of devices in endovascular interventions can decrease operation times, improve decision-making during surgery, and reduce operator radiation exposure while increasing access to treatment. This systematic…

This paper presents a simulation-based approach to own voice detection (OVD) in hearing aids using a single microphone. While OVD can significantly improve user comfort and speech intelligibility, existing solutions often rely on multiple…

We proposed a novel test-time optimisation (TTO) approach framed by a NeRF-based architecture for long-term 3D point tracking. Most current methods in point tracking struggle to obtain consistent motion or are limited to 2D motion. TTO…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Gerardo Loza , Junlei Hu , Dominic Jones , Sharib Ali , Pietro Valdastri

3D shape reconstruction is a primary component of augmented/virtual reality. Despite being highly advanced, existing solutions based on RGB, RGB-D and Lidar sensors are power and data intensive, which introduces challenges for deployment in…

Computer Vision and Pattern Recognition · Computer Science 2020-12-11 Alexis Baudron , Zihao W. Wang , Oliver Cossairt , Aggelos K. Katsaggelos

The 3D reconstruction of simultaneous localization and mapping (SLAM) is an important topic in the field for transport systems such as drones, service robots and mobile AR/VR devices. Compared to a point cloud representation, the 3D…

Robotics · Computer Science 2023-09-12 Quentin Picard , Stephane Chevobbe , Mehdi Darouich , Jean-Yves Didier

Critical VR applications in domains such as healthcare, education, and finance that use traditional credentials, such as PIN, password, or multi-factor authentication, stand the chance of being compromised if a malicious person acquires the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-10 Mingjun Li , Natasha Kholgade Banerjee , Sean Banerjee

Sim-to-real transfer is a fundamental challenge in robot reinforcement learning. Discrepancies between simulation and reality can significantly impair policy performance, especially if it receives high-dimensional inputs such as dense depth…

Robotics · Computer Science 2025-05-20 Hang Yu , Christophe De Wagter , Guido C. H. E de Croon