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Photon-efficient imaging with the single-photon light detection and ranging (LiDAR) captures the three-dimensional (3D) structure of a scene by only a few detected signal photons per pixel. However, the existing computational methods for…

Image and Video Processing · Electrical Eng. & Systems 2022-10-28 Yiwei Chen , Gongxin Yao , Yong Liu , Hongye Su , Xiaomin Hu , Yu Pan

Optimising the analysis of cardiac structure and function requires accurate 3D representations of shape and motion. However, techniques such as cardiac magnetic resonance imaging are conventionally limited to acquiring contiguous…

Image and Video Processing · Electrical Eng. & Systems 2021-07-19 Nicolo Savioli , Antonio de Marvao , Wenjia Bai , Shuo Wang , Stuart A. Cook , Calvin W. L. Chin , Daniel Rueckert , Declan P. O'Regan

Contrastive learning has shown great promise over annotation scarcity problems in the context of medical image segmentation. Existing approaches typically assume a balanced class distribution for both labeled and unlabeled medical images.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Chenyu You , Weicheng Dai , Yifei Min , Lawrence Staib , James S. Duncan

Deep learning has shown great potential in accelerating diffusion tensor imaging (DTI). Nevertheless, existing methods tend to suffer from Rician noise and detail loss in reconstructing the DTI-derived parametric maps especially when…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Wenxin Fan , Jian Cheng , Cheng Li , Xinrui Ma , Jing Yang , Juan Zou , Ruoyou Wu , Qiegen Liu , Shanshan Wang

We investigated whether a combination of k-space undersampling and variable density averaging enhances image quality for low-SNR MRI acquisitions. We implemented 3D Cartesian k-space prospective undersampling with a variable number of…

We suggest a new multi-modal algorithm for joint inference of paired structurally aligned samples with Rectified Flow models. While some existing methods propose a codependent generation process, they do not view the problem of joint…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Boyi Pang , Savva Ignatyev , Vladimir Ippolitov , Ramil Khafizov , Yurii Melnik , Oleg Voynov , Maksim Nakhodnov , Aibek Alanov , Xiaopeng Fan , Peter Wonka , Evgeny Burnaev

We have developed a 3 dimensional Coherent Diffraction Imaging (CDI) algorithm to retrieve phases of diffraction patterns of samples in Grazing Incidence Small Angle X-ray Scattering (GISAXS) experiments. The algorithm interprets the…

Instrumentation and Detectors · Physics 2023-07-26 Yi Yang , Sunil K. Sinha

Multi-sensor fusion using LiDAR and RGB cameras significantly enhances 3D object detection task. However, conventional LiDAR sensors perform dense, stateless scans, ignoring the strong temporal continuity in real-world scenes. This leads to…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Sara Shoouri , Morteza Tavakoli Taba , Hun-Seok Kim

A significant challenge in object detection is accurate identification of an object's position in image space, whereas one algorithm with one set of parameters is usually not enough, and the fusion of multiple algorithms and/or parameters…

Computer Vision and Pattern Recognition · Computer Science 2018-03-20 Pan Wei , John E. Ball , Derek T. Anderson

Cerebrovascular disease is one of the major diseases facing the world today. Automatic segmentation of intracranial artery (IA) in digital subtraction angiography (DSA) sequences is an important step in the diagnosis of vascular related…

Image and Video Processing · Electrical Eng. & Systems 2023-09-08 Lemeng Wang , Wentao Liu , Weijin Xu , Haoyuan Li , Huihua Yang , Feng Gao

Accurate segmentation of the left ventricle myocardium in cardiac CT angiography (CCTA) is essential for e.g. the assessment of myocardial perfusion. Automatic deep learning methods for segmentation in CCTA might suffer from differences in…

Computer Vision and Pattern Recognition · Computer Science 2019-01-29 Steffen Bruns , Jelmer M. Wolterink , Robbert W. van Hamersvelt , Majd Zreik , Tim Leiner , Ivana Išgum

This study aimed to propose a denoising method for dynamic contrast-enhanced computed tomography (DCE-CT) perfusion studies using a three-dimensional deep image prior (DIP), and to investigate its usefulness in comparison with total…

Medical Physics · Physics 2023-04-04 Kenya Murase

Stable Diffusion (SD) has gained a lot of attention in recent years in the field of Generative AI thus helping in synthesizing medical imaging data with distinct features. The aim is to contribute to the ongoing effort focused on overcoming…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Ayman Abaid , Muhammad Ali Farooq , Niamh Hynes , Peter Corcoran , Ihsan Ullah

Multi contrast MRI synthesis is inherently challenging due to the complex and nonlinear relationships among different contrasts. Each MRI contrast highlights unique tissue properties, but their complementary information is difficult to…

Image and Video Processing · Electrical Eng. & Systems 2025-06-23 Sanuwani Dayarathna , Himashi Peiris , Kh Tohidul Islam , Tien-Tsin Wong , Zhaolin Chen

MRI images of the same subject in different contrasts contain shared information, such as the anatomical structure. Utilizing the redundant information amongst the contrasts to sub-sample and faithfully reconstruct multi-contrast images…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Xinwen Liu , Jing Wang , Fangfang Tang , Shekhar S. Chandra , Feng Liu , Stuart Crozier

Angiography imaging is a medical imaging technique that enhances the visibility of blood vessels within the body by using contrast agents. Angiographic images can effectively assist in the diagnosis of vascular diseases. However, contrast…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Zhifeng Wang , Renjiao Yi , Xin Wen , Chenyang Zhu , Kai Xu

Volumetric, multimodal imaging with precise spatial and temporal co-registration can provide valuable and complementary information for diagnosis and monitoring. Considerable research has sought to combine 3D photoacoustic (PA) and…

Ultrasound 3D compounding is important for volumetric reconstruction, but as of yet there is no consensus on best practices for compounding. Ultrasound images depend on probe direction and the path sound waves pass through, so when multiple…

Image and Video Processing · Electrical Eng. & Systems 2021-09-01 Alex Ling Yu Hung , John Galeotti

Available super-resolution techniques for 3D images are either computationally inefficient prior-knowledge-based iterative techniques or deep learning methods which require a large database of known low- and high-resolution image pairs. A…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Janka Hatvani , Adrian Basarab , Jean-Yves Tourneret , Miklós Gyöngy , Denis Kouamé

Magnetic resonance imaging (MRI) is an essential medical tool with inherently slow data acquisition process. Slow acquisition process requires patient to be long time exposed to scanning apparatus. In recent years significant efforts are…

Computer Vision and Pattern Recognition · Computer Science 2015-03-05 Jelena Badnjar