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Aims. Using ground based multi-object optical spectroscopy obtained in the framework of the VLT-FLAMES Tarantula Survey (VFTS), we aim to establish the (projected) rotational velocity distribution for a sample of 216 presumably single…

Investing efficiently in future research to improve policy decisions is an important goal. Expected Value of Sample Information (EVSI) can be used to select the specific design and sample size of a proposed study by assessing the benefit of…

Based on CT and MRI images acquired from normal pressure hydrocephalus (NPH) patients, using machine learning methods, we aim to establish a multi-modal and high-performance automatic ventricle segmentation method to achieve efficient and…

Medical Physics · Physics 2022-02-02 Xi Zhou , Qinghao Ye , Xiaolin Yang , Jiakuan Chen , Haiqin Ma , Jun Xia , Javier Del Ser , Guang Yang

Particle-based simulations of the Vlasov equation typically require a large number of particles, which leads to a high-dimensional system of ordinary differential equations. Solving such systems is computationally very expensive, especially…

Computational Physics · Physics 2023-07-19 Tomasz M. Tyranowski , Michael Kraus

Background and Objective: Infra-red scanning laser ophthalmoscope (IRSLO) images are akin to colour fundus photographs in displaying the posterior pole and retinal vasculature fine detail. While there are many trained networks readily…

Image and Video Processing · Electrical Eng. & Systems 2023-11-30 Adam Threlfall , Samuel Gibbon , James Cameron , Tom MacGillivray

The biggest improvements in Photometric Stereo (PS) field has recently come from adoption of differentiable volumetric rendering techniques such as NeRF or Neural SDF achieving impressive reconstruction error of 0.2mm on DiLiGenT-MV…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Fotios Logothetis , Ignas Budvytis , Stephan Liwicki , Roberto Cipolla

Segmenting human left ventricle (LV) in magnetic resonance imaging (MRI) images and calculating its volume are important for diagnosing cardiac diseases. In 2016, Kaggle organized a competition to estimate the volume of LV from MRI images.…

Computer Vision and Pattern Recognition · Computer Science 2018-01-23 Fangzhou Liao , Xi Chen , Xiaolin Hu , Sen Song

We introduce NeuV-SLAM, a novel dense simultaneous localization and mapping pipeline based on neural multiresolution voxels, characterized by ultra-fast convergence and incremental expansion capabilities. This pipeline utilizes RGBD images…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Wenzhi Guo , Bing Wang , Lijun Chen

Purpose: The purpose of this study was to introduce SLOctolyzer: an open-source analysis toolkit for en face retinal vessels in infrared reflectance scanning laser ophthalmoscopy (SLO) images. Methods: SLOctolyzer includes two main modules:…

Image and Video Processing · Electrical Eng. & Systems 2024-11-13 Jamie Burke , Samuel Gibbon , Justin Engelmann , Adam Threlfall , Ylenia Giarratano , Charlene Hamid , Stuart King , Ian J. C. MacCormick , Tom MacGillivray

Echocardiography has become an indispensable clinical imaging modality for general heart health assessment. From calculating biomarkers such as ejection fraction to the probability of a patient's heart failure, accurate segmentation of the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Fadillah Maani , Asim Ukaye , Nada Saadi , Numan Saeed , Mohammad Yaqub

Partial voluming (PV) is arguably the last crucial unsolved problem in Bayesian segmentation of brain MRI with probabilistic atlases. PV occurs when voxels contain multiple tissue classes, giving rise to image intensities that may not be…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Benjamin Billot , Eleanor D. Robinson , Adrian V. Dalca , Juan Eugenio Iglesias

Purpose: In multi-spectral imaging (MSI), several fast spin echo volumes with discrete Larmor frequency offsets are acquired in an interleaved fashion with multiple concatenations. Here, a variable resolution (VR) method to nearly halve…

Medical Physics · Physics 2023-06-06 Nikolai J. Mickevicius , Azadeh Sharafi , Andrew S. Nencka , Kevin M. Koch

Multi-compartment modeling of diffusion-weighted magnetic resonance imaging measurements is necessary for accurate brain connectivity analysis. Existing methods for estimating the number and orientations of fascicles in an imaging voxel…

Image and Video Processing · Electrical Eng. & Systems 2020-06-22 Davood Karimi , Lana Vasung , Camilo Jaimes , Fedel Machado-Rivas , Shadab Khan , Simon K. Warfield , Ali Gholipour

Prognostic tumor growth modeling via volumetric medical imaging observations can potentially lead to better outcomes of tumor treatment and surgical planning. Recent advances of convolutional networks have demonstrated higher accuracy than…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 Ling Zhang , Le Lu , Xiaosong Wang , Robert M. Zhu , Mohammadhadi Bagheri , Ronald M. Summers , Jianhua Yao

This paper presents approaches to compute sparse solutions of Generalized Singular Value Problem (GSVP). The GSVP is regularized by $\ell_1$-norm and $\ell_q$-penalty for $0<q<1$, resulting in the $\ell_1$-GSVP and $\ell_q$-GSVP…

Machine Learning · Computer Science 2024-10-08 Ugochukwu O. Ugwu , Michael Kirby

Accurate segmentation of the Left Ventricle (LV) holds substantial importance due to its implications in disease detection, regional analysis, and the development of complex models for cardiac surgical planning. CMR is a golden standard for…

Image and Video Processing · Electrical Eng. & Systems 2024-07-31 Maria Tamoor , Abbas Raza Ali , Philemon Philip , Ruqqayia Adil , Rabia Shahid , Asma Naseer

Bayesian approaches to variable selection have been widely used for quantitative trait locus (QTL) mapping. The Markov chain Monte Carlo (MCMC) algorithms for that aim are often difficult to be implemented for high-dimensional variable…

Quantitative Methods · Quantitative Biology 2015-03-20 Zijian Dong , Jingzhuo Wang , Zhongming Wang

The potential of using visible light communication (VLC) technologies for vehicular communication networks has recently attracted much attention. The underlying VLC channels, as a foundation for the proper design and optimization of…

Signal Processing · Electrical Eng. & Systems 2020-07-29 A. Al-Kinani , C. -X. Wang , Q. Zhu , Y. Fu , A. Talib , N. Al-Hasaani

Voxel is an important format to represent geometric data, which has been widely used for 3D deep learning in shape analysis due to its generalization ability and regular data format. However, fine-grained tasks like part segmentation…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Zongji Wang , Feng Lu

The Virtual Telescope for X-ray Observations (VTXO) will use lightweight Phase Fresnel Lenses (PFLs) in a virtual X-ray telescope with $\sim$1 km focal length and with $\sim$50 milli-arcsecond angular resolution. VTXO is formed by using…

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