Browsing Issue 3 by Title
Now showing items 16-35 of 49
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Hierarchical and Heterogenous Reactive Agents for Real-Time Applications
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present a generic concept for autonomous agents with reactive behavior based on situation recognition in real-time environments. Our approach facilitates behavior development through specialization of existing behavior ... -
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 ... -
Hierarchical Higher Order Face Cluster Radiosity for Global Illumination Walkthroughs of Complex Non-Diffuse Environments
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present an algorithm for simulating global illumination in scenes composed of highly tessellated objects withdiffuse or moderately glossy reflectance. The solution method is a higher order extension of the face cluster ... -
Image Based Interactive Rendering with View Dependent Geometry
(Blackwell Publishers, Inc and the Eurographics Association, 2003)In this paper we present a novel approach for interactive rendering of virtual views from real image sequences.Combining the concepts of light fields, depth-compensated image warping and view dependent texture mapping,this ... -
Image Categorization using Color Blobs in a Mobile Environment
(Blackwell Publishers, Inc and the Eurographics Association, 2003)This paper generalizes the basic idea of blobs in preattentive perception using color information. This is usedas the base of a basic classification of low resolution pictures taken with mobile phones. This classification, ... -
Interactive Cutaway Illustrations
(Blackwell Publishers, Inc and the Eurographics Association, 2003)In this paper we discuss different approaches to generate cutaway illustrations. The purpose of such a drawingis to allow the viewer to have a look into an otherwise solid opaque object. Traditional methods to draw thesekinds ... -
Interactive Design of Bonsai Tree Models
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Because of their complexity, plant models used in computer graphics are commonly created with proceduralmethods. A difficult problem is the user control of these models: a small number of parameters is insufficient tospecify ... -
Interactive Rendering with Bidirectional Texture Functions
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We propose a new technique for efficiently rendering bidirectional texture functions (BTFs). A 6D BTF describesthe appearance of a material as a texture that depends on the lighting and viewing directions. As such, a ... -
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 ... -
Multiresolution Surface Representation Based on Displacement Volumes
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We propose a new representation for multiresolution models which uses volume elements enclosed between thedifferent resolution levels to encode the detail information. Keeping these displacement volumes locally constantduring ... -
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 ... -
On Visual Similarity Based 3D Model Retrieval
(Blackwell Publishers, Inc and the Eurographics Association, 2003) -
Open Issues in Photo-realistic Rendering
(Blackwell Publishers, Inc and the Eurographics Association, 2003)For more than two decades Computer graphics researchers have tried to achieve photo-realism in their images as reliable as possible, mainly by simulating the physical laws of light and adding one effect after the other. ... -
Out-of-core compression and decompression of large n-dimensional scalar fields
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present a simple method for compressing very large and regularly sampled scalar fields. Our method is particularlyattractive when the entire data set does not fit in memory and when the sampling rate is high relative ... -
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 ... -
Planned Sampling of Spatially Varying BRDFs
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Measuring reflection properties of a 3D object involves capturing images for numerous viewing and lightingdirections. We present a method to select advantageous measurement directions based on analyzing the estimationof ... -
Planning Collision-Free Reaching Motions for Interactive Object Manipulation and Grasping
(Blackwell Publishers, Inc and the Eurographics Association, 2003)We present new techniques that use motion planning algorithms based on probabilistic roadmaps to control 22 degrees of freedom (DOFs) of human-like characters in interactive applications. Our main purpose is the automatic ... -
Precise Ink Drawing of 3D Models
(Blackwell Publishers, Inc and the Eurographics Association, 2003)Drawings made with precise pen strokes accurately reveal the geometric forms that give subjects their characteristicshape. We present a system for non-photorealistic rendering of precise drawing strokes over dense 3Dtriangle ... -
Progressive Simplification of Tetrahedral Meshes Preserving All Isosurface Topologies
(Blackwell Publishers, Inc and the Eurographics Association, 2003)In this paper, we propose a novel technique for constructing multiple levels of a tetrahedral volume dataset whilepreserving the topologies of all isosurfaces embedded in the data. Our simplification technique has two ... -
Ray Differentials and Multiresolution Geometry Caching for Distribution Ray Tracing in Complex Scenes
(Blackwell Publishers, Inc and the Eurographics Association, 2003)When rendering only directly visible objects, ray tracing a few levels of specular reflection from large, low-curvaturesurfaces, and ray tracing shadows from point-like light sources, the accessed geometry is coherentand ...