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Modeling with Ambient B-Splines

Annotation

Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Lehmann, Nicole
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Berlin : Logos Verlag Berlin, 2014.
Temas:
Acceso en línea:Texto completo

MARC

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100 1 |a Lehmann, Nicole. 
245 1 0 |a Modeling with Ambient B-Splines 
260 |a Berlin :  |b Logos Verlag Berlin,  |c 2014. 
300 |a 1 online resource (126 pages) 
336 |a text  |b txt  |2 rdacontent 
337 |a computer  |b c  |2 rdamedia 
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588 0 |a Print version record. 
505 0 |a Intro; 1 Introduction; 2 Related Work; 2.1 Surface modeling; 2.1.1 Simplicial surfaces; 2.1.2 Parametric surfaces; 2.1.3 Implicit surfaces; 2.2 Approximation of functions on manifolds; 3 The Ambient B-Spline Method; 3.1 Basic concept; 3.2 Approximation power; 4 Realization of the Ambient B-Spline Method; 4.1 Preliminaries; 4.1.1 B-splines; 4.1.2 Dual functionals and quasi-interpolants; 4.2 Implementation; 4.3 Examples; 4.3.1 Geoid; 4.3.2 Stanford Bunny; 4.3.3 Cow model; 5 Hierarchical Approximation; 5.1 Hierarchical grids and B-splines; 5.2 Approximation by hierarchical overlays 
505 8 |a 5.3 Approximation by linearly independent hierarchical B-splines5.3.1 Hierarchical quasi-interpolant; 5.3.2 Stability; 5.3.3 Implementation aspects of hierarchical B-splines; 6 Revised Examples Using Adaptive Refinement; 6.1 Geoid; 6.2 Stanford Bunny; 6.3 Cow model; 7 Curvature Analysis; 7.1 Introduction; 7.2 The generalized curvature tensor; 7.3 Three different setups; 7.3.1 Parametrized surfaces; 7.3.2 Implicit surfaces; 7.3.3 Space deformation; 7.4 Examples; 7.4.1 Stanford Bunny and cow model; 7.4.2 Rounded cube; 8 Further Issues; 8.1 Parameter correction; 8.2 Bootstrapping 
500 |a 9 Conclusion and Outlook 
520 8 |a Annotation  |b The present thesis introduces a new approach for the generation of C^{k-approximants of functions defined on closed submanifolds for arbitrary k in N. In case a function on a surface resembles the three coordinates of a topologically equivalent surface in R^3, we even obtain C^k-approximants of closed surfaces of arbitrary topology. The key idea of our method is a constant extension of the target function into the submanifold's ambient space.In case the reference submanifolds are embedded and C^k, the usage of standard tensor product B-splines for the approximation of the extended function is straightforward. We obtain a C^k-approximation of the target function by restricting the approximant to the reference submanifold. We illustrate our method by an easy example in R^2and verify its practicality by application-oriented examples in R^3. The first treats the approximation of the geoid, an important reference magnitude within geodesy and geophysics. The second and third example treat the approximation of geometric models. The usage of B-splines not only guarantees full approximation power but also allows a canonical access to adaptive refinement strategies. We elaborate on two hierarchical techniques and successfully apply them to the introduced examples.Concerning the modeling of surfaces by the new approach, we derive numerically robust formulas for the determination of normal vectors and curvature information of a target surface which only need the spline approximant as well as the normal vectors and curvature information of the reference surface. 
590 |a ProQuest Ebook Central  |b Ebook Central Academic Complete 
650 0 |a Spline theory. 
650 6 |a Théorie des splines. 
650 7 |a Spline theory  |2 fast 
776 0 8 |i Print version:  |a Lehmann, Nicole.  |t Modeling with Ambient B-Splines.  |d Berlin : Logos Verlag Berlin, ©2014  |z 9783832536022 
856 4 0 |u https://ebookcentral.uam.elogim.com/lib/uam-ebooks/detail.action?docID=5850421  |z Texto completo 
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