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Vector autoregression has been widely used for modeling and analysis of multivariate time series data. In high-dimensional settings, model parameter regularization schemes inducing sparsity yield interpretable models and achieved good…

Methodology · Statistics 2023-06-08 Leo L. Duan , Zeyu Yuwen , George Michailidis , Zhengwu Zhang

Blood vessel segmentation is one of the most studied topics in computer vision, due to its relevance in daily clinical practice. Despite the evolution the field has been facing, especially after the dawn of deep learning, important…

Image and Video Processing · Electrical Eng. & Systems 2021-08-02 R. J. Araújo , J. S. Cardoso , H. P. Oliveira

We present CaravelMetrics, a computational framework for automated cerebrovascular analysis that models vessel morphology through skeletonization-derived graph representations. The framework integrates atlas-based regional parcellation,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Daniele Falcetta , Liane S. Canas , Lorenzo Suppa , Matteo Pentassuglia , Jon Cleary , Marc Modat , Sébastien Ourselin , Maria A. Zuluaga

We propose a new geometric regularization principle for reconstructing vector fields based on prior knowledge about their divergence. As one important example of this general idea, we focus on vector fields modelling blood flow pattern that…

Computer Vision and Pattern Recognition · Computer Science 2018-11-27 Zhongwen Zhang , Egor Chesakov , Dmitrii Marin , Yuri Boykov

Knowledge of airway tree morphology has important clinical applications in diagnosis of chronic obstructive pulmonary disease. We present an automatic tree extraction method based on multiple hypothesis tracking and template matching for…

Computer Vision and Pattern Recognition · Computer Science 2016-11-28 Raghavendra Selvan , Jens Petersen , Jesper H. Pedersen , Marleen de Bruijne

In this work, we adapt a method based on multiple hypothesis tracking (MHT) that has been shown to give state-of-the-art vessel segmentation results in interactive settings, for the purpose of extracting trees. Regularly spaced tubular…

Computer Vision and Pattern Recognition · Computer Science 2020-07-01 Raghavendra Selvan , Jens Petersen , Jesper H Pedersen , Marleen de Bruijne

We present a data-driven generative framework for synthesizing blood vessel 3D geometry. This is a challenging task due to the complexity of vascular systems, which are highly variating in shape, size, and structure. Existing model-based…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Paula Feldman , Miguel Fainstein , Viviana Siless , Claudio Delrieux , Emmanuel Iarussi

The growing availability of high-resolution, long-term time series data has highlighted the need for methods capable of capturing both local and global patterns. To address this, we introduce the Probabilistic Visibility Graph (PVG), a…

Systems and Control · Electrical Eng. & Systems 2025-07-03 Roberto Sotero , Jose Sanchez-Bornot

Retinal vessel segmentation is an indispensable step for automatic detection of retinal diseases with fundoscopic images. Though many approaches have been proposed, existing methods tend to miss fine vessels or allow false positives at…

Computer Vision and Pattern Recognition · Computer Science 2017-07-03 Jaemin Son , Sang Jun Park , Kyu-Hwan Jung

There are many unsolved problems in vascular image segmentation, including vascular structural connectivity, scarce branches and missing small vessels. Obtaining vessels that preserve their correct topological structures is currently a…

Image and Video Processing · Electrical Eng. & Systems 2023-12-14 Yuntao Zhu , Yuxuan Qiao , Xiaoping Yang

Trajectory similarity search plays an essential role in autonomous driving, as it enables vehicles to analyze the information and characteristics of different trajectories to make informed decisions and navigate safely in dynamic…

Machine Learning · Computer Science 2024-04-15 Ming Cheng , Bowen Zhang , Ziyu Wang , Ziyi Zhou , Weiqi Feng , Yi Lyu , Xingjian Diao

Automatic road graph extraction from aerial and satellite images is a long-standing challenge. Existing algorithms are either based on pixel-level segmentation followed by vectorization, or on iterative graph construction using next move…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Gaetan Bahl , Mehdi Bahri , Florent Lafarge

We propose a deep learning-based automatic coronary artery tree centerline tracker (AuCoTrack) extending the vessel tracker by Wolterink (arXiv:1810.03143). A dual pathway Convolutional Neural Network (CNN) operating on multi-scale 3D…

Image and Video Processing · Electrical Eng. & Systems 2023-11-27 Zohaib Salahuddin , Matthias Lenga , Hannes Nickisch

In this note we make use of some properties of vector fields on a manifold to give an alternate proof to [3] for the equivalence between connections and parallel transport on vector bundles over manifolds. Out of the proof will emerge a new…

Differential Geometry · Mathematics 2011-02-23 Florin Dumitrescu

In this paper, we consider a tree inference problem motivated by the critical problem in single-cell genomics of reconstructing dynamic cellular processes from sequencing data. In particular, given a population of cells sampled from such a…

Methodology · Statistics 2025-07-16 Elodie Maignant , Tim Conrad , Christoph von Tycowicz

A rigorous formulation of Vessiot's vector field approach to the analysis of general systems of partial differential equations is provided. It is shown that this approach is equivalent to the formal theory of differential equations and that…

Differential Geometry · Mathematics 2009-09-28 Dirk Fesser , Werner M. Seiler

Vector extraction retrieves structured vector geometry from raster images, offering high-fidelity representation and broad applicability. Existing methods, however, are usually tailored to a single vector type (e.g., polygons, polylines,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 Yinglong Yan , Jun Yue , Shaobo Xia , Hanmeng Sun , Tianxu Ying , Chengcheng Wu , Sifan Lan , Min He , Pedram Ghamisi , Leyuan Fang

Vortices and their analysis play a critical role in the understanding of complex phenomena in turbulent flows. Traditional vortex extraction methods, notably region-based techniques, often overlook the entanglement phenomenon, resulting in…

Fluid Dynamics · Physics 2024-12-19 Adeel Zafar , Zahra Poorshayegh , Di Yang , Guoning Chen

3D asymmetric tensor fields have found many applications in science and engineering domains, such as fluid dynamics and solid mechanics. 3D asymmetric tensors can have complex eigenvalues, which makes their analysis and visualization more…

Graphics · Computer Science 2021-08-05 Shih-Hsuan Hung , Yue Zhang , Harry Yeh , Eugene Zhang

Tree-like structures, such as blood vessels, often express complexity at very fine scales, requiring high-resolution grids to adequately describe their shape. Such sparse morphology can alternately be represented by locations of centreline…

Computer Vision and Pattern Recognition · Computer Science 2018-11-09 Kerry Halupka , Rahil Garnavi , Stephen Moore
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