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Determination of shape and sphericity of silicon quantum dots imaged by EFTEM-tomography
(2017-11-06)
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Article.
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The shape of size-controlled silicon nanocrystals (Si NCs) embedded in SiO2 is investigated by tomographic energy-filtered transmission electron microscopy (EFTEM). The sphericity of the quantum dots is determined by ...
Structural parameters
(2010-02)
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Report de recerca.
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The development of the bioengineering field has yield to the apparition of a new application of the Computer-Aided-Design, Bio-CAD, aiming to the use of computer models to represent biological samples and methods to simulate ...
Bio-CAD analysis of porosity bioimplants
(2008)
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Text en actes de congrés.
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In this work we present two methods to
compute the porosity from a μCT image. One is the virtual simulation of a porosimeter and the other is a sphere-based heuristic approach. Both methods obtain a graph representing the ...
CUDB: An improved decomposition model for orthogonal pseudo-polyhedra
(2011)
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We present a new decomposition model for Orthogonal Pseudo-Polyhedra (OPP): the Compact Union of Disjoint Boxes. This model is an improved version of the Ordered Union of Disjoint Boxes model. Our model has many desirable ...
Compact union of disjoint boxes: An efficient decomposition model for binary volumes
(2017)
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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 ...
Orthogonal polyhedra as geometric bounds in constructive solid geometry
(1996-12)
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Set membership classification and, specifically,
the evaluation of a CSG
tree are problems of a certain complexity. Several techniques to speed
up these processes have been proposed such as Active Zones, Geometric
...
Modelat sòlid: realització d'operacions booleanes amb model de fronteres
(1989)
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Aquest treball presenta un algorisme per realitzar operacions booleanes amb model de fronteres. Es basa en un algorisme en 2D per polígons. L'algorisme consta de 4 passos. Els tres primers son comuns a qualsevol operació ...
Sphericity and roundness computation for particles using the extreme vertices model
(Elsevier, 2019-01-01)
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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 ...
Orientation, sphericity and roundness evaluation of particles using alternative 3D representations
(2014)
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Sphericity and roundness indices have been used mainly in geology to analyze the shape of particles. In this paper, geometric methods are proposed as an alternative to evaluate the orientation, sphericity and roundness ...
Virtual Porosimeter
(2008)
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Article.
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Recently, the term Bio-CAD has appeared to refer to the modeling of biological processes. This work focuses on the analysis of structural properties such as porosity of bioimplants for bone reconstruction. Specifically, ...