Výsledky vyhledávání - "Dolors Ayala"

Sphericity and Roundness Computation for Particles using the Extreme Vertices Model

Autor: Dolors Ayala, Daniel Hiller, Irving Cruz-Matías, Sònia Estradé, Francesca Peiró, Sebastian Gutsch, Margit Zacharias

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Shape is a property studied for many kinds of particles. Among shape parameters, sphericity and roundness indices had been largely studied to understand several processes. Some of these indices are based on length measurements of the particle obtaine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a03492cf7e90befeb174983249d9153
http://hdl.handle.net/2445/172307

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Compact Union of Disjoint Boxes: An Efficient Decomposition Model for Binary Volumes

Autor: Dolors Ayala, Irving Cruz-Matías

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

This paper presents in detail the CompactUnion of Disjoint Boxes (CUDB), a decomposition modelfor binary volumes that has been recently but brieflyintroduced. This model is an improved version of aprevious model called Ordered Union of Disjoint Boxes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d8d93276f5f9ce0e79023de320a7035
https://doi.org/10.13053/cys-21-2-2737

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Efficient algorithms for boundary extraction of 2D and 3D orthogonal pseudomanifolds

Autor: Dolors Ayala, Núria Pla, Jonís Martínez, Marc Vigo

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

In this paper we present algorithms to extract the boundary representation of orthogonal polygons and polyhedra, either manifold or pseudomanifold. The algorithms we develop reconstruct not only the polygons of the boundaries but also the hole-face i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e9a2714548603ae981a3f4f4f7ece94
https://doi.org/10.1016/j.gmod.2012.03.004

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Calculation of viscosity–temperature curves for glass obtained from four wastewater treatment plants in Egypt

Autor: Irving Cruz-Matías, M. H. Aly, J.M. Nogues, Dolors Ayala, Eduard Vergés, Hoda S. Hafez, Maite Garcia-Valles, Salvador Martinez

Publikováno v: Journal of Thermal Analysis and Calorimetry. 111:107-114

This article establishes the relationship between the chemical composition, temperature and viscosity of glasses obtained from the four sludge treatment plants of urban and industrial wastewater from the Nile Delta in Egypt. In order to determine the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b08a5c4c5f20226cf249aaf0fa7c3827
https://doi.org/10.1007/s10973-012-2232-7

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A connected-component-labeling-based approach to virtual porosimetry

Autor: Dolors Ayala, J. Rodríguez, Eduard Vergés, Irving Cruz

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

Analyzing the pore-size distribution of porous materials, made up of an aggregation of interconnected pores, is a demanding task. Mercury intrusion porosimetry (MIP) is a physical method that intrudes mercury into a sample at increasing pressures to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a554c566bcb219f0553ef78102c085d
https://doi.org/10.1016/j.gmod.2011.06.001

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3D pore analysis of sedimentary rocks

Autor: Sergi Grau, Emilio Ramos, Eduard Vergés, Dolors Ayala, Dani Tost

Publikováno v: Sedimentary Geology. 234:109-115

A 3D representation of the internal structure and fabric of sedimentary rocks is of paramount interest to evaluate their structural parameters such as porosity, pore-size distribution and permeability. The classical experimental technique to evaluate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50be10197b89f01228c4ad59f02da5d7
https://doi.org/10.1016/j.sedgeo.2010.12.005

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Exploration of porous structures with illustrative visualizations

Autor: Eduard Vergés, Dani Tost, Dolors Ayala, Sergi Grau

Publikováno v: Computers & Graphics. 34:398-408

The analysis of porous structures from CT images is emerging as a new computer graphics application that is useful in diverse scientific fields such as BioCAD and geology. These structures are very complex and difficult to analyze visually when they

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54ec468c1532039230afadfe9994a574
https://doi.org/10.1016/j.cag.2010.05.001

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Splat representation of parametric surfaces

Autor: Núria Pla, Dolors Ayala, Marc Vigo

Publikováno v: Computing. 79:101-108

Point and splat-based representations have become a suitable technique both for modeling and rendering complex 3D shapes. Converting other kinds of models as parametric surfaces to splat-based representations will allow to mix surface and splat-based

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4159388ee2d3081286b1d337ec584146
https://doi.org/10.1007/s00607-006-0189-8

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VolumeEVM: A new approach for surface/volume integration

Autor: Dolors Ayala, Sergi Grau, J. Rodríguez

Publikováno v: Computers & Graphics. 29:217-224

Volume visualization is a very active research area in the field of scientific visualization. The main techniques of volume visualization are surface rendering and direct volume rendering. In recent works, the extreme vertices model (EVM) has been us

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::825e1c073915b3e39202cec915bb087d
https://doi.org/10.1016/j.cag.2004.12.007

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Two Triangulation Methods Based on Edge Refinement

Autor: Marc Vigo, Núria Pla, Dolors Ayala

Publikováno v: Scopus-Elsevier

In this paper two curvature adaptive methods of surface triangulation are presented. Both methods are based on edge refinement to obtain a triangulation compatible with the curvature requirements. The first method applies an incremental and constrain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::389710c4c15691052a70ac3e081a480c
https://doi.org/10.1007/s00607-003-0059-6

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