L. Kobbelt, P. Schröder, F. Losasso, S. Schaefer, J. Warren
Previous parametric representations of smooth genus-zero surfaces require a collection of abutting patches (e.g. splines, NURBS, recursively subdivided polygons). We introduce a simple construction...
Improved Curvature Estimation on Triangular Meshes (2008)
L. Kobbelt, P. Schröder, T. Gatzke, C. Grimm
This paper takes a systematic look at several techniques for calculating curvature of a surface that is represented by a triangular mesh. Both discrete curvature approximation techniques and surface...
Global Conformal Surface Parameterization (2008)
L. Kobbelt, P. Schröder, Xianfeng Gu, Shing-tung Yau
We solve the problem of computing global conformal parameterizations for surfaces with nontrivial topologies. The parameterization is global in the sense that it preserves the conformality everywhere...
Global Conformal Surface Parameterization (2008)
L. Kobbelt, P. Schröder, Xianfeng Gu, Shing-tung Yau
We solve the problem of computing global conformal parameterizations for surfaces with nontrivial topologies. The parameterization is global in the sense that it preserves the conformality everywhere...
Estimation on Triangular Meshes (2008)
L. Kobbelt, P. Schröder, T. Gatzke, C. Grimm
This paper takes a systematic look at calculating the curvature of surfaces represented by triangular meshes. We have developed a suite of test cases for assessing the sensitivity of curvature...
Geometry Compression of Normal Meshes Using Rate-Distortion Algorithms (2008)
L. Kobbelt, P. Schröder, Sridhar Lavu, Hyeokho Choi, Richard Baraniuk
We propose a new rate-distortion based algorithm for compressing 3D surface geometry represented using triangular normal meshes. We apply the Estimation-Quantization (EQ) algorithm to compress normal...
Estimating Differential Quantities Using Polynomial Fitting of Osculating Jets (2008)
L. Kobbelt, P. Schröder, F. Cazals, M. Pouget
This paper addresses the pointwise estimation of differential properties of a smooth manifold S —a curve in the plane or a surface in 3D — assuming a point cloud sampled over S is provided. The...
Domain Decomposition for Multiresolution Analysis (2008)
This paper describes a method for converting an arbitrary mesh with irregular connectivity to a semi-regular multiresolution representation. A shape image encoding geometric and differential...
Approximate implicitization via curve fitting (2008)
L. Kobbelt, P. Schröder, E. Wurm, B. Jüttler
We discuss methods for fitting implicitly defined (e.g. piecewise algebraic) curves to scattered data, which may contain problematic regions, such as edges, cusps or vertices. As the main idea, we...
Statistical Point Geometry (2008)
L. Kobbelt, P. Schröder, Aravind Kalaiah, Amitabh Varshney
We propose a scheme for modeling point sample geometry with statistical analysis. In our scheme we depart from the current schemes that deterministically represent the attributes of each point...
for three-dimensional non-manifold objects (2008)
L. Kobbelt, P. Schröder, Leila De Floriani, Annie Hui
A scalable data structure
and Object Modeling — Boundary representations. (2008)
L. Kobbelt, P. Schröder, J-d Boissonnat, S. Oudot
We present an algorithm for meshing surfaces that is a simple adaptation of a greedy “farthest point ” technique proposed by Chew. Given a surface S, it progressively adds points on S and updates...
Stellar Subdivision Grammars (2008)
L. Kobbelt, P. Schröder, Luiz Velho, Matematica Pura Aplicada
In this paper we develop a new description for subdivision surfaces based on a graph grammar formalism. Subdivision schemes are specified by a context sensitive grammar in which production rules...
Eurographics Symposium on Geometry Processing (2003) (2008)
L. Kobbelt, P. Schröder, Raphaëlle Chaine
This paper introduces a fast and efficient algorithm for surface reconstruction. As many algorithms of this kind, it produces a piecewise linear approximation of a surface S from a finite,...
Multi-Chart Geometry Images (2008)
L. Kobbelt, P. Schröder, Z. J. Wood, S. J. Gortler, J. Snyder
We introduce multi-chart geometry images, a new representation for arbitrary surfaces. It is created by resampling a surface onto a regular 2D grid. Whereas the original scheme of Gu et al. maps the...
L. Kobbelt, P. Schröder, F. Losasso, S. Schaefer, J. Warren
Previous parametric representations of smooth genus-zero surfaces require a collection of abutting patches (e.g. splines, NURBS, recursively subdivided polygons). We introduce a simple construction...
3D Reconstruction Using Labeled Image Regions (2008)
L. Kobbelt, P. Schröder, Remo Ziegler, Wojciech Matusik, Hanspeter Pfister, Leonard Mcmillan
In this paper we present a novel algorithm for reconstructing 3D scenes from a set of images. The user defines a set of polygonal regions with corresponding labels in each image using familiar 2D...
L. Kobbelt, P. Schröder, F. Losasso, S. Schaefer, J. Warren
Previous parametric representations of smooth genus-zero surfaces require a collection of abutting patches (e.g. splines, NURBS, recursively subdivided polygons). We introduce a simple construction...
L. Kharevych, Weiwei Y. Tong, E. Kanso, J. E. Marsden, P. Schröder, M. Desbrun
We present a general-purpose numerical scheme for time integration of Lagrangian dynamical systems—an important computational tool at the core of most physics-based animation techniques. Several...
Mesh Forging: Editing of 3D-Meshes Using Implicitly Defined (2008)
L. Kobbelt, P. Schröder, G. H. Bendels, R. Klein
In recent years the ease of use and the flexibility in the editing process shifted into focus in modelling and animation applications. In this spirit we present a 3D mesh editing method that is...
L. Kobbelt, P. Schröder, Miguel A. Otaduy, Ming C. Lin
We present “contact levels of detail ” (CLOD), a novel concept for multiresolution collision detection. Given a polyhedral model, our algorithm automatically builds a “dual hierarchy”, both a...
Efficient Max-Norm Distance Computation and Reliable Voxelization (2007)
L. Kobbelt, P. Schröder, Gokul Varadhan, Shankar Krishnan, Young J. Kim, Suhas Diggavi, ...
We present techniques to efficiently compute the distance under max-norm between a point and a wide class of geometric primitives. We formulate the distance computation as an optimization problem and...
Skeleton Extraction of 3D Objects with Visible Repulsive Force (2007)
L. Kobbelt, P. Schröder, Fu-che Wu, Wan-chun Ma, Ping-chou Liou, Rung-huei Liang, ...
Skeleton should be the reduced object representation that conforms to human visual perception, and is very useful in applications such as object matching, mesh representation, computer animation,...
Approximating and Intersecting Surfaces from Points (2007)
L. Kobbelt, P. Schröder, Anders Adamson Ý, Marc Alexa Þ
Point sets become an increasingly popular shape representation. Most shape processing and rendering tasks require the approximation of a continuous surface from the point data. We present a surface...
Rotation Invariant Spherical Harmonic Representation of 3D Shape Descriptors Abstract (2007)
L. Kobbelt, P. Schröder, Michael Kazhdan, Thomas Funkhouser, Szymon Rusinkiewicz
One of the challenges in 3D shape matching arises from the fact that in many applications, models should be considered to be the same if they differ by a rotation. Consequently, when comparing two...
Eurographics Symposium on Geometry Processing (2003) (2007)
L. Kobbelt, P. Schröder, Explicit Surface Remeshing, Vitaly Surazhsky, Craig Gotsman
We present a new remeshing scheme based on the idea of improving mesh quality by a series of local modifications of the mesh geometry and connectivity. Our contribution to the family of local...
Simple Silhouettes for Complex Surfaces (2007)
L. Kobbelt, P. Schröder, D. Kirsanov, S. J. Gortler
Complex meshes tend to have intricate, detailed silhouettes. This paper proposes two algorithms for extracting a simpler, approximate silhouette from a high-resolution model. Our methods preserve the...
Intrinsic Motivation versus Signaling in Open Source Software Development (2006)
Bitzer, J, Schrettl, W, Schröder, P
nullThis papers sheds light on the puzzling fact that even though open source software (OSS) is a public good, it is developed for free by highly qualified, young, motivated individuals, and evolves...
Kurzinformation: Bereits vor 250 Jahren schrieb Denis Diderot zum Stichwort "Machiavellismus", dass "es wenig Werke gibt, die dermaßen für Lärm gesorgt haben wie die Abhandlung vom Principe". In...
A Geometric Database For Gene Expression Data (2003)
L. Kobbelt, P. Schröder, Tao Ju, Joe Warren, Gregor Eichele, Christina Thaller, ...
As the logical next step after sequencing the mouse genome, biologists have developed laboratory methods for rapidly determining where each of the 30K genes in the mouse genome is synthesizing...
Statistical Point Geometry (2003)
L. Kobbelt, P. Schröder, Aravind Kalaiah, Amitabh Varshney
We propose a scheme for modeling point sample geometry with statistical analysis. In our scheme we depart from the current schemes that deterministically represent the attributes of each point...
Book description: Die Rechtslehre von Hobbes gliedert sich im wesentlichen in die zwei einander begründungslogisch bedingenden Teile der Naturzustandslehre und der Souveränitätstheorie. Die...
A SVAT scheme for NO, NO2, and O3. Model description and test results (1996)
Kramm, G., Beier, N., Foken, T., Müller, H., Schröder, P., Seiler, W.
A soil/vegetation/atmosphere transfer (SVAT) scheme for determining the dry deposition and/or emission fluxes of NO, NO2, and 03, in the atmospheric surface layer over horizontally uniform terrain...
Kramm, G., Müller, H., Schröder, P., Seiler, W., Dlugi, R., Seiler, T., ...
Dry deposition of ozone and reactive nitrogen compounds, such as NO, NO2, HNO3, NH3, and NH4NO3, is examined in the context of numerical methods. These methods are based on the generally accepted...
Characterization of a thermo-osmotic gas transport mechanism in Alnus glutinosa -L.- Gaertn. (1989)
A gas transport system based upon the physico-chemical effect of thermo-osmosis of gases is described for the black alder, Alnus glutinosa (L.) Gaertn. Air is transported through the alder's stem to...