Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Konrad Polthier"'
Autor:
Faniry H. Razafindrazaka, Pavlo Yevtushenko, Konstantin Poelke, Konrad Polthier, Leonid Goubergrits
Publikováno v:
Royal Society Open Science, Vol 6, Iss 2 (2019)
A discrete boundary-sensitive Hodge decomposition is proposed as a central tool for the analysis of wall shear stress (WSS) vector fields in aortic blood flows. The method is based on novel results for the smooth and discrete Hodge–Morrey–Friedri
Externí odkaz:
https://doaj.org/article/3b6937f245dc4f0bb1f02772187df476
Autor:
Falko Kaufhold, Ella Maria Kadas, Christoph Schmidt, Hagen Kunte, Jan Hoffmann, Hanna Zimmermann, Timm Oberwahrenbrock, Lutz Harms, Konrad Polthier, Alexander U Brandt, Friedemann Paul
Publikováno v:
PLoS ONE, Vol 7, Iss 5, p e36965 (2012)
OBJECTIVE: To evaluate 3D spectral domain optical coherence tomography (SDOCT) volume scans as a tool for quantification of optic nerve head (ONH) volume as a potential marker for treatment effectiveness and disease progression in idiopathic intracra
Externí odkaz:
https://doaj.org/article/805b2c5a505f4af3ad4d8ee061d704f9
Publikováno v:
Journal of Mathematics and the Arts, 16(1-2)
Various computer simulations regarding, e.g., the weather or structural mechanics, solve complex problems on a two-dimensional domain. They mostly do so by splitting the input domain into a finite set of smaller and simpler elements on which the simu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6026ab57abcaa477b62590092d31b21d
https://doi.org/10.1080/17513472.2022.2069417
https://doi.org/10.1080/17513472.2022.2069417
Publikováno v:
Trends in Mathematics ISBN: 9783030991159
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f1709c9846b08d8e8825ff19b1f5b87
https://doi.org/10.1007/978-3-030-99116-6_5
https://doi.org/10.1007/978-3-030-99116-6_5
Autor:
Konstantin Poelke, Konrad Polthier
Publikováno v:
Mathematics and Visualization ISBN: 9783030430351
We introduce and explore the concept of discrete Poincare duality angles as an intrinsic measure that quantifies the metric-topological influence of boundary components to compact surfaces with boundary. Based on a discrete Hodge-Morrey-Friedrichs de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27f9164493b56eee37405e05c2c8f781
https://doi.org/10.1007/978-3-030-43036-8_16
https://doi.org/10.1007/978-3-030-43036-8_16
Publikováno v:
Computer Aided Geometric Design. 64:73-89
With the emergence of affordable 3D scanning and printing devices, processing of large point clouds has to be performed in many applications. Several algorithms are available for surface reconstruction, smoothing, and parametrization. However, many o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b992c359c2df708924b7da5fd1e5193f
https://doi.org/10.1016/j.cagd.2018.03.011
https://doi.org/10.1016/j.cagd.2018.03.011
Publikováno v:
IEEE Transactions on Visualization and Computer Graphics. 24:2366-2379
This paper presents a tensor multiplication based smoothing algorithm that follows a two step denoising method. Unlike other traditional averaging approaches, our approach uses an element based normal voting tensor to compute smooth surfaces. By intr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a8f42475161b85dd0c4ff86be260d48
https://doi.org/10.1109/tvcg.2017.2740384
https://doi.org/10.1109/tvcg.2017.2740384
Publikováno v:
Computers & Graphics. 74:234-243
In many applications, point set surfaces are acquired by 3D scanners. During this acquisition process, noise and outliers are inevitable. For a high fidelity surface reconstruction from a noisy point set, a feature preserving point set denoising oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fe38093f45ec2aac6ef030a323364ac
https://doi.org/10.1016/j.cag.2018.05.014
https://doi.org/10.1016/j.cag.2018.05.014
Publikováno v:
Computer Aided Geometric Design. :63-74
In this paper we give an explicit algorithm to optimize the global structure of quadrilateral meshes i.e. base complexes, using a graph perfect matching. The approach consists of constructing a special graph over the singularity set of the mesh and f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7de5a4ec818be0e8328ed0871e3632c
https://doi.org/10.1016/j.cagd.2017.02.012
https://doi.org/10.1016/j.cagd.2017.02.012
Publikováno v:
Computer Aided Geometric Design. 86:101973
In this paper, we introduce a feature preserving surface reconstruction algorithm to produce a high fidelity triangulated mesh from an input point set. The concept of local Delaunay triangulation is applied to speed up the reconstruction procedure an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e88048e4d60de9a92201bad75f1e1f2
https://doi.org/10.1016/j.cagd.2021.101973
https://doi.org/10.1016/j.cagd.2021.101973