Browsing Solid Modeling 04 by Title
Now showing items 120 of 43

3D Discrete Skeleton Generation by Wave Propagation on PROctree for Finite Element Mesh Sizing
(The Eurographics Association, 2004)This paper proposes a new algorithm to generate a disconnected, threedimensional (3D) skeleton and an application of such a skeleton to generate a finite element (FE) mesh sizing function of a solid. The mesh sizing ... 
Actual Morphing: A PhysicalBased Approach for Blending Two 2D/3D Shapes
(The Eurographics Association, 2004)When two topologically identical shapes are blended, various possible transformation paths exist from the source shape to the target shape. Which one is the most plausible? Here we propose that the transformation process ... 
Automatic Building of Structured Geological Models
(The Eurographics Association, 2004)The present article proposes a method to signi cantly improve the construction and updating of 3D geological models used for oil and gas exploration. The proposed method takes advantage of the speci c structures which ... 
Brep SE: Simplicially Enhanced Boundary Representation
(The Eurographics Association, 2004)Boundary representation (Brep) is a popular representation scheme for mechanical objects due to its ability to accurately represent piecewise smooth surfaces bounding solids. However, nontrivial topology and geometry of ... 
Compression, Segmentation, and Modeling of Filamentary Volumetric Data
(The Eurographics Association, 2004)We present a data structure for the representation of filamentary volumetric data, called the Lblock. While the Lblock can be used to represent arbitrary volume data sets, it is particularly geared towards representing ... 
A Condition for Isotopic Approximation
(The Eurographics Association, 2004)In this paper, we give a very simple and purely topological condition for two surfaces to be isotopic. This work is motivated by the problem of surface approximation. Applications to implicit surfaces are given, as well ... 
Connected and Manifold Sierpinski Polyhedra
(The Eurographics Association, 2004)In this paper, we present a subdivisioninspired scheme to construct generalized Sierpinski polyhedron. Unlike usual Sierpinski polyhedra construction schemes, which create either an infinite set of disconnected tetrahedra ... 
Constraintbased Design of Bspline Surfaces from Curves
(The Eurographics Association, 2004)In this paper we describe the design of Bspline surface models by means of curves and tangency conditions. The intended application is the conceptual constraintdriven design of surfaces from handsketched curves. The ... 
Contour Interpolation with Bounded Dihedral Angles
(The Eurographics Association, 2004)In this paper, we present the first nontrivial theoretical bound on the quality of the 3D solids generated by any contour interpolation method. Given two arbitrary parallel contour slices with n vertices in 3D, let a be ... 
Developabilitypreserved Freeform Deformation of Assembled Patches
(The Eurographics Association, 2004)A novel and practical approach is presented in this paper that solves a constrained freeform deformation (FFD) problem where the developability of the tessellated embedded surface patches is preserved during the lattice ... 
An Effective Condition for Sampling Surfaces with Guarantees
(The Eurographics Association, 2004)The notion of esample, as introduced by Amenta and Bern, has proven to be a key concept in the theory of sampled surfaces. Of particular interest is the fact that, if E is an esample of a smooth surface S for a suf ciently ... 
Efficient and Robust Computation of an Approximated Medial Axis
(The Eurographics Association, 2004)The medial axis can be viewed as a compact representation for an arbitrary model; it is an essential geometric structure in many applications. A number of practical algorithms for its computation have been aimed at speeding ... 
Efficient Processing of 3D Scanned Models
(The Eurographics Association, 2004)The construction of detailed and accurate 3D models is made easier by the increasing diffusion of automatic sampling devices (often called 3D scanners). These allow to build digital models of real 3D objects in a cost and ... 
Euler Operators for Stratified Objects with Incomplete Boundaries
(The Eurographics Association, 2004)Stratified objects such as those found in geometrybased systems (e.g. CAD systems and animation systems) can be stepwise constructed and manipulated through Euler operators. The operators proposed in this paper extend ... 
Fast Continuous Collision Detection for Articulated Models
(The Eurographics Association, 2004)We present a novel algorithm to perform continuous collision detection for articulated models. Given two discrete configurations of the links of an articulated model, we use an ''arbitrary inbetween motion'' to interpolate ... 
A Framework for Multiresolution Adaptive Solid Objects
(The Eurographics Association, 2004)Despite the growing interest in subdivision surfaces within the computer graphics and geometric processing communities, subdivision approaches have been receiving much less attention in solid modeling. This paper presents ... 
From Computer Geometry to Manufacturing Algorithms
(The Eurographics Association, 2004)Abstractly, machining a shape is rather a simple task, that is, one is merely asked to subtractively metamorphose a superset of stock material into the ultimate shape of a given geometric model. In practice, however, there ... 
Frontmatter Solid Modeling 2014
(The Eurographics Association, 2004)Table of Contents and Preface, Committees, Cover 
Handling Degeneracies in Exact Boundary Evaluation
(The Eurographics Association, 2004)We present a method for dealing with degenerate situations in an exact boundary evaluation system. We describe the possible degeneracies that can arise and how to detect them. We then present a numeric perturbation method ... 
History Based Reactive Objects for Immersive CAD
(The Eurographics Association, 2004)Virtual Environments (VE) allow direct 3D interaction, better perception of shapes and a feel of immersion, properties that are highly desirable for design tasks. Traditional CAD software extensively use WIMP interfaces ...