Browsing Volume 22 (2003) by Issue Date
Now showing items 1-20 of 90
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Particle-Based Simulation of Fluids
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Due to our familiarity with how fluids move and interact, as well as their complexity, plausible animation of fluidsremains a challenging problem. We present a particle interaction method for simulating fluids. The ... -
Volumetric cell-and-portal generation
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present an algorithm to generate a cell-and-portal decomposition of general indoor scenes. The method is an adaptation of the 3D watershed transform, computed on a distance-to-geometry sampled field. The watershed is ... -
Cloth Motion Capture
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Recent years have seen an increased interest in motion capture systems. Current systems, however, are limitedto only a few degrees of freedom, so that effectively only the motion of linked rigid bodies can be acquired. ... -
Compression of 2D Vector Fields Under Guaranteed Topology Preservation
(Blackwell Publishers, Inc and the Eurographics Association, 2003)In this paper we introduce a new compression technique for 2D vector fields which preserves the complete topology, i.e., the critical points and the connectivity of the separatrices. As the theoretical foundation of the ... -
Hierarchical Context-based Pixel Ordering
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present a context-based scanning algorithm which reorders the input image using a hierarchical representationof the image. Our algorithm optimally orders (permutes) the leaves corresponding to the pixels, by minimizing ... -
Fast Photo-Realistic Rendering of Trees in Daylight
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We propose a fast approach for photo-realistic rendering of trees under various kinds of daylight, which is particularlyuseful for the environmental assessment of landscapes. In our approach the 3D tree models are transformedto ... -
Multi-scale Feature Extraction on Point-Sampled Surfaces
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present a new technique for extracting line-type features on point-sampled geometry. Given an unstructuredpoint cloud as input, our method first applies principal component analysis on local neighborhoods toclassify ... -
Creation and Control of Real-time Continuous Level of Detail on Programmable Graphics Hardware
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Continuity in level of detail sequences is essential in hiding visual artefacts that occur when switching between discrete levels of detail. However, construction and implementation of these sequences is prohibitively ... -
Two-dimensional Potential Fields for Advanced Implicit Modeling Operators
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Current methods for building models using implicit volume techniques present problems defining accurate and controllable blend shapes between implicit primitives. We present new methods to extend the freedom and controllability ... -
Automatic Hybrid Hierarchy Creation: a Cost-model Based Approach
(Blackwell Publishers, Inc and the Eurographics Association, 2003)While using hierarchical search structures has been proved as one of the most efficient acceleration techniques when rendering complex scenes, automatic creation of appropriate hierarchies is not solved yet. Well-known ... -
Interpolating an Unlimited Number of Curves Meeting at Extraordinary Points on Subdivision Surfaces*
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Interpolating curves by subdivision surfaces is one of the major constraints that is partially addressed in the literature. So far, no more than two intersecting curves can be interpolated by a subdivision surface such as ... -
Editorial
(Blackwell Publishers, Inc and the Eurographics Association, 2003) -
The Perspective Silhouette of a Canal Surface
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present an efficient and robust algorithm for parameterizing the perspective silhouette of a canal surface and detecting each connected component of the silhouette. A canal surface is the envelope of a moving sphere ... -
Emotion Disc and Emotion Squares: Tools to Explore the Facial Expression Space
(Blackwell Publishers, Inc and the Eurographics Association, 2003)In the paper we present two novel interactive tools, Emotion Disc and Emotion Squares, to explore the facial expression space. They map navigation in a two-dimensional circle, by the first tool, or in two two-dimensional ... -
On the Optimality of Valence-based Connectivity Coding
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We show that the average entropy of the distribution of valences in valence sequences for the class of manifold 3D triangle meshes and the class of manifold 3D polygon meshes is strictly less than the entropy of these ... -
Fourth Eurographics Workshop on Parallel Graphics and Visualisation
(Blackwell Publishers, Inc and the Eurographics Association, 2003) -
Reanimating Faces in Images and Video
(Blackwell Publishers, Inc and the Eurographics Association, 2003)This paper presents a method for photo-realistic animation that can be applied to any face shown in a single imageor a video. The technique does not require example data of the person's mouth movements, and the image to ... -
Narrative Use of Sign Language by a Virtual Character for the Hearing Impaired
(Blackwell Publishers, Inc and the Eurographics Association, 2003)This paper describes the concept and control of a 3d virtual character system with facial expressions and gesturesas a conversational user interface with narrative expressiveness for the hearing impaired. The gestures and ... -
Visyllable Based Speech Animation
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Visemes are visual counterpart of phonemes. Traditionally, the speech animation of 3D synthetic faces involvesextraction of visemes from input speech followed by the application of co-articulation rules to generate ... -
A Few Good Lines: Suggestive Drawing of 3D Models
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present a method for rendering 3D models in the traditionalline-drawing style used in artistic and scientificillustrations. The goal is to suggest the 3D shape of the objectsusing a small number of lines drawn with ...