X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems

D Wildenschild, AP Sheppard - Advances in Water resources, 2013 - Elsevier
We report here on recent developments and advances in pore-scale X-ray tomographic
imaging of subsurface porous media. Our particular focus is on immiscible multi-phase fluid …

Voronoi-based curvature and feature estimation from point clouds

Q Mérigot, M Ovsjanikov… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
We present an efficient and robust method for extracting curvature information, sharp
features, and normal directions of a piecewise smooth surface from its point cloud sampling …

[PDF][PDF] Detecting mobile objects with ai using edge detection and background subtraction techniques

R Zulunov, B Soliyev, A Kayumov… - E3S Web of …, 2024 - e3s-conferences.org
This study explores the mathematical foundations integral to the training process of YOLO
(You Only Look Once), a prominent object detection algorithm in computer vision. Key …

Rock discontinuities identification from 3D point clouds using artificial neural network

Y Ge, B Cao, H Tang - Rock Mechanics and Rock Engineering, 2022 - Springer
Rock discontinuities fundamentally impact the mechanical and hydraulic behaviors of a rock
mass, and thus it is a critically important task to characterize the geometrical parameters of …

Extraction of cylinders and estimation of their parameters from point clouds

TT Tran, VT Cao, D Laurendeau - Computers & Graphics, 2015 - Elsevier
In this paper, a novel algorithm is proposed for extracting cylinders and estimating their
parameters from 3D point cloud data. First, normal vectors and curvature information are …

A comprehensive process of reverse engineering from 3D meshes to CAD models

R Bénière, G Subsol, G Gesquière, F Le Breton… - Computer-Aided …, 2013 - Elsevier
In an industrial context, most manufactured objects are designed using CAD (Computer-
Aided Design) software. For visualization, data exchange or manufacturing applications, the …

Mechanical model of blebbing in nuclear lamin meshworks

CM Funkhouser, R Sknepnek, T Shimi… - Proceedings of the …, 2013 - National Acad Sciences
Much of the structural stability of the nucleus comes from meshworks of intermediate filament
proteins known as lamins forming the inner layer of the nuclear envelope called the nuclear …

Distribution of local curvature values as a sign for static signature verification

U Akhundjanov, B Soliyev, A Kayumov… - E3S Web of …, 2024 - e3s-conferences.org
This paper proposes a new feature for describing a digital image of a handwritten signature
based on the frequency distribution of local curvature values of the contours of this …

Contactless recognition of concrete surface damage from laser scanning and curvature computation

G Teza, A Galgaro, F Moro - Ndt & E International, 2009 - Elsevier
A method conceived for automatic recognition of mass loss of concrete using data acquired
by terrestrial laser scanner is presented here. The method is based on computation of mean …

Corner treatments for high-order local absorbing boundary conditions in high-frequency acoustic scattering

A Modave, C Geuzaine, X Antoine - Journal of Computational Physics, 2020 - Elsevier
This paper deals with the design and validation of accurate local absorbing boundary
conditions set on convex polygonal and polyhedral computational domains for the finite …