Browsing Volume 20 (2001) by Title
Now showing items 51-70 of 88
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Linear Interval Estimations for Parametric Objects Theory and Application
(Blackwell Publishers Ltd and the Eurographics Association, 2001)The new concept of parametrized bounding volumes for parametric objects is proposed to replace the common compact bounding volumes like axis aligned bounding boxes and parallelepipeds. Linear Interval Estimations (LIEs) ... -
A low cost 3D scanner based on structured light
(Blackwell Publishers Ltd and the Eurographics Association, 2001)Automatic 3D acquisition devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. We have experimented this technology in a particular application ... -
Mesh Optimization for Polygonized Isosurfaces
(Blackwell Publishers Ltd and the Eurographics Association, 2001)In this paper, we propose a method for improvement of isosurface polygonizations. Given an initial polygonization of an isosurface, we introduce a mesh evolution process initialized by the polygonization. The evolving mesh ... -
Modeling Dynamic Hair as a Continuum
(Blackwell Publishers Ltd and the Eurographics Association, 2001)In this paper we address the difficult problem of hair dynamics, particularly hair-hair and hair-air interactions. To model these interactions, we propose to consider hair volume as a continuum. Subsequently, we treat the ... -
Modeling Stochastic Dynamical Systems for Interactive Simulation
(Blackwell Publishers Ltd and the Eurographics Association, 2001)We present techniques for constructing approximate stochastic models of complicated dynamical systems for applications in interactive computer graphics. The models are designed to produce realistic interaction at low cost.We ... -
Multiresolution for Algebraic Curves and Surfaces using Wavelets
(Blackwell Publishers Ltd and the Eurographics Association., 2001)This paper describes a multiresolution method for implicit curves and surfaces. The method is based on wavelets, and is able to simplify the topology. The implicit curves and surfaces are defined as the zero-valued piece-wise ... -
A Novel Approach for Delaunay 3D Reconstruction with a Comparative Analysis in the Light of Applications
(Blackwell Publishers Ltd and the Eurographics Association, 2001)This paper presents a novel algorithm for volumetric reconstruction of objects from planar sections using Delaunay triangulation, which solves the main problems posed to models defined by reconstruction, particularly from ... -
On-the-Fly Processing of Generalized Lumigraphs
(Blackwell Publishers Ltd and the Eurographics Association, 2001)We introduce a flexible and powerful concept for reconstructing arbitrary views from multiple source images on the fly. Our approach is based on a Lumigraph structure with per-pixel depth values, and generalizes the classical ... -
PC-based Real-time Texture Painting on Real World Objects
(Blackwell Publishers Ltd and the Eurographics Association, 2001)The problem of texture mapping on real world objects has attracted attention11,8 recently. A work by Lensch et al.9 addressed the problem of locating a camera position in the celestial sphere and then mapping the acquired ... -
Perceptually Guided Corrective Splatting
(Blackwell Publishers Ltd and the Eurographics Association, 2001)One of the basic difficulties with interactive walkthroughs is the high quality rendering of object surfaces with non-diffuse light scattering characteristics. Since full ray tracing at interactive rates is usually impossible, ... -
Rapid High Quality Compression of Volume Data for Visualization
(Blackwell Publishers Ltd and the Eurographics Association, 2001)Volume data sets resulting from, e.g., computerized tomography (CT) or magnetic resonance (MR) imaging modalities require enormous storage capacity even at moderate resolution levels. Such large files may require compression ... -
Ray Tracing Triangular Bezier Patches
(Blackwell Publishers Ltd and the Eurographics Association, 2001)We present a new approach to finding ray-patch intersections with triangular Bernstein-Bezier patches of arbitrary degree. This paper extends and complements on the short presentation17 . Unlike a previous approach which ... -
Real-Time Cloud Rendering
(Blackwell Publishers Ltd and the Eurographics Association, 2001)This paper presents a method for realistic real-time rendering of clouds suitable for flight simulation and games. It provides a cloud shading algorithm that approximates multiple forward scattering in a preprocess, and ... -
Real-Time Volume Deformations
(Blackwell Publishers Ltd and the Eurographics Association, 2001)Real-time free-form deformation tools are primarily based on surface or particle representations to allow for interactive modification and fast rendering of complex models. The efficient handling of volumetric representations, ... -
Recent Advances in Volume Visualization
(Blackwell Publishers Ltd and the Eurographics Association, 2001)In the past few years, there have been key advances in the three main approaches to the visualization of volumetric data: isosurfacing, slicing and volume rendering, which together make up the field of volume visualization.In ... -
A Recursive Subdivision Algorithm for Piecewise Circular Spline
(Blackwell Publishers Ltd and the Eurographics Association., 2001)We present an algorithm for generating a piecewise G1 circular spline curve from an arbitrary given control polygon. For every corner, a circular biarc is generated with each piece being parameterized by its arc length. ... -
Reflective Interaction in Virtual Environments
(Blackwell Publishers Ltd and the Eurographics Association, 2001)The proliferation of projection-based systems in recent years resulted in a variety of specialised interaction techniques that make Virtual Environments a better man machine interface. However, the success of these techniques ... -
Rendering Natural Waters
(Blackwell Publishers Ltd and the Eurographics Association, 2001)Creating and rendering realistic water is one of the most daunting tasks in computer graphics. Realistic rendering of water requires that the sunlight and skylight illumination are correct, the water surface is modeled ... -
Rendering Pearlescent Appearance Based On Paint-Composition Modelling
(Blackwell Publishers Ltd and the Eurographics Association, 2001)We describe a new approach to modelling pearlescent paints based on decomposing paint layers into stacks of imaginary thin sublayers. The sublayers are chosen so thin that multiple scattering can be considered across ... -
Rendering Silhouettes with Virtual Lights
(Blackwell Publishers Ltd and the Eurographics Association, 2001)We present a new method for obtaining non-photorealistic images. These images have two main visual components: silhouettes and non-realistic colouring. Silhouettes are lines that define the form of an object. They are used ...