Volume 21 (2002): Recent submissions
Now showing items 61-80 of 100
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Flattening 3D objects using silhouettes
(Blackwell Publishers, Inc and the Eurographics Association, 2002)An important research area in non-photorealistic rendering is the obtention of silhouettes. There are many methods to do this using 3D models and raster structures, but these are limited in their ability to create stylised ... -
Geometric Snakes for Triangular Meshes
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Feature detection is important in various mesh processing techniques, such as mesh editing, mesh morphing, mesh compression, and mesh signal processing. In spite of much research in computer vision, automatic feature ... -
Metamorphosis of Polyhedral Surfaces using Decomposition
(Blackwell Publishers, Inc and the Eurographics Association, 2002)This paper describes an algorithm for morphing polyhedral surfaces based on their decompositions into patches. The given surfaces need neither be genus-zero nor two-manifolds. We present a new algorithm for decomposing ... -
Hardware Accelerated Interactive Vector Field Visualization: A level of detail approach
(Blackwell Publishers, Inc and the Eurographics Association, 2002)This paper presents an interactive global visualization technique for dense vector fields using levels of detail. We introduce a novel scheme which combines an error-controlled hierarchical approach and hardware acceleration ... -
Designing 2D Vector Fields of Arbitrary Topology
(Blackwell Publishers, Inc and the Eurographics Association, 2002)We introduce a scheme of control polygons to design topological skeletons for vector fields of arbitrary topology. Based on this we construct piecewise linear vector fields of exactly the topology specified by the control ... -
Free-form sketching with variational implicit surfaces
(Blackwell Publishers, Inc and the Eurographics Association, 2002)With the advent of sketch-based methods for shape construction, there's a new degree of power available in the rapid creation of approximate shapes. Sketch [Zeleznik, 1996] showed how a gesture-based modeler could be used ... -
Hardware-Based Volumetric Knit-Wear
(Blackwell Publishers, Inc and the Eurographics Association, 2002)We present a hardware-based, volumetric approach for rendering knit wear at very interactive rates. A single stitch is represented by a volumetric texture with each voxel storing the main direction of the strands of yarn ... -
A Biologically-Parameterized Feather Model
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Feathers, unlike other cutaneous appendages such as hair, fur, or scales have a definite structure. Variation in feather structure creates a wide range of resulting appearances. Collectively, feather structure determines ... -
Advanced Radiance Estimation For Photon Map Global Illumination
(Blackwell Publishers, Inc and the Eurographics Association, 2002)We present a new method to compute radiance in photon map based global illumination simulation for polygonal scenes with general bidirectional scattering distribution functions (BSDFs). Our new radiance estimation uses the ... -
Grid Based Final Gather for Radiosity on Complex Clustered Scenes
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Radiosity methods handle large scenes and complex objects using clustering techniques. To reconstruct a high quality image, usually a second very time consuming final gather pass is applied which exactly recomputes the ... -
Efficient Multidimensional Sampling
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Image synthesis often requires the Monte Carlo estimation of integrals. Based on a generalized concept of stratification we present an efficient sampling scheme that consistently outperforms previous techniques. This is ... -
Intrinsic Parameterizations of Surface Meshes
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Parameterization of discrete surfaces is a fundamental and widely-used operation in graphics, required, for instance, for texture mapping or remeshing. As 3D data becomes more and more detailed, there is an increased need ... -
A Simple and Robust Mutation Strategy for the Metropolis Light Transport Algorithm
(Blackwell Publishers, Inc and the Eurographics Association, 2002)This paper presents a new mutation strategy for the Metropolis light transport algorithm, which works in the unit cube of pseudo-random numbers instead of mutating in the path space. This transformation makes the integrand ... -
Improved Scene Reconstruction from Range Images
(Blackwell Publishers, Inc and the Eurographics Association, 2002)The modeling of real scenes is a complex and challenging task for which the use of laser rangefinders is one of the most promising approaches. Unfortunately, in many situations, it is not possible or practical to guarantee ... -
Dynamic Textures for Image-based Rendering of Fine-Scale 3D Structure and Animation of Non-rigid Motion
(Blackwell Publishers, Inc and the Eurographics Association, 2002)The problem of capturing real world scenes and then accurately rendering them is particularly difficult for fine-scale 3D structure. Similarly, it is difficult to capture, model and animate non-rigid motion. We present a ... -
Automatic Integration of Facade Textures into 3D Building Models with a Projective Geometry Based Line Clustering
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Visualization of city scenes is important for many applications including entertainment and urban mission planning. Models covering wide areas can be efficiently constructed from aerial images. However, only roof details ... -
Representation of Pseudo Inter-reflection and Transparency by Considering Characteristics of Human Vision
(Blackwell Publishers, Inc and the Eurographics Association, 2002)We have succeeded in developing a quick and fully automated system that can generate photo-realistic 3D CG data based on a real object. A major factor in this success comes from our findings through psychophysical experiments ... -
Hybrid Geometric - Image Based Rendering
(Blackwell Publishers, Inc and the Eurographics Association, 2002)We present a Hybrid Geometric-Image Based Rendering (HGIBR) system for displaying very complex geometrical models at interactive frame rates. Our approach replaces distant geometry with a combination of image-based ... -
Multi-Resolution Rendering of Complex Animated Scenes
(Blackwell Publishers, Inc and the Eurographics Association, 2002)We present a novel multi-resolution point sample rendering algorithm for keyframe animations. The algorithm accepts triangle meshes of arbitrary topology as input which are animated by specifying different sets of vertices ... -
Object Space EWA Surface Splatting: A Hardware Accelerated Approach to High Quality Point Rendering
(Blackwell Publishers, Inc and the Eurographics Association, 2002)Elliptical weighted average (EWA) surface splatting is a technique for high quality rendering of point-sampled 3D objects. EWA surface splatting renders water-tight surfaces of complex point models with high quality, ...