Browsing EG 1995 Conference Proceedings by Issue Date
Now showing items 21-39 of 39
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Object Calibration for Augmented Reality
(Blackwell Science Ltd and the Eurographics Association, 1995)Augmented reality involves the use of models and their associated renderings to supplement information in a real scene. In order for this information to be relevant or meaningful, the models must be positioned and displayed ... -
Fast Shadowing Algorithm for Linear Light Sources
(Blackwell Science Ltd and the Eurographics Association, 1995)This paper presents a fast shadowing algorithm for linear light sources that uses a ray-oriented buffer. Space segmentation by the buffer guarantees that if a point is included in a subspace, all light rays toward the point ... -
Filtering, Clustering and Hierarchy Construction: a New Solution for Ray-Tracing Complex Scenes
(Blackwell Science Ltd and the Eurographics Association, 1995)Data structures that handle very complex scenes (hundreds of thousands of objects) have in the past either been laboriously built by hand, or have required the determination of unintuitive parameter values by the user. It ... -
Synthesizing Feather Textures in Galliformes
(Blackwell Science Ltd and the Eurographics Association, 1995)The texture of feather is one of the most fascinating, complicated, and beautiful texture patterns in nature. In this paper, we propose a new and effective texture generation approach that uses the traits of iteration ... -
A new radiosity approach for regular objects: application to ruled surfaces
(Blackwell Science Ltd and the Eurographics Association, 1995)This paper introduces a new approach in the radiosity method. The main principle applied here, is the improvement of form factor computation by the knowledge of the model properties. More precisely, if surfaces describing ... -
A Direct Manipulation Interface for 3D Computer Animation
(Blackwell Science Ltd and the Eurographics Association, 1995)We present a new set of interface techniques for visualizing and editing animation directly in a single three-dimensional scene. Motion is edited using direct-manipulation tools which satisfy high-level goals such as"reach ... -
Sketching 3D Animations
(Blackwell Science Ltd and the Eurographics Association, 1995)We are interested in providing animators with a general-purpose tool allowing them to create animations using straight-ahead actions as well as pose-to-pose techniques. Our approach seeks to bring the expressiveness of ... -
Fair Surface Reconstruction Using Quadratic Functionals
(Blackwell Science Ltd and the Eurographics Association, 1995)An algorithm for surface reconstruction from a polyhedron with arbitrary topology consisting of triangular faces is presented. The first variant of the algorithm constructs a curve network consisting of cubic Bezier curves ... -
A Quick Rendering Method Using Basis Functions for Interactive Lighting Design
(Blackwell Science Ltd and the Eurographics Association, 1995)When designing interior lighting effects, it is desirable to compare a variety of lighting designs involving different lighting devices and directions of light. It is, however, time-consuming to generate images with many ... -
Discrete Ray-Tracing of Huge Voxel Spaces
(Blackwell Science Ltd and the Eurographics Association, 1995)The quality of images produced by Discrete Ray-Tracing voxel spaces is highly dependent on 3d grid resolution. The huge amount of memory needed to store such grids often discards discrete Ray-Tracing as a practical ... -
Spherical Triangular B-splines with Application to Data Fitting
(Blackwell Science Ltd and the Eurographics Association, 1995)Triangular B-splines surfaces are a tool for representing arbitrary piecewise polynomial surfaces over planar triangulations, while automatically maintaining continuity properties across patch boundaries. Recently, Alfeld ... -
Generating a Texture Map from Object-Surface Texture Data
(Blackwell Science Ltd and the Eurographics Association, 1995)A number of 3D digitizing methods, including stereopsis, are capable of measuring not only an object s shape but also its surface texture. Measured shape data can be expressed as a polyhedron whose faces are triangular, ... -
Automatic Reconstruction of Unstructured 3D Data: Combining a Medial Axis and Implicit Surfaces
(Blackwell Science Ltd and the Eurographics Association, 1995)This paper presents a new method that combines a medial axis and implicit surfaces in order to reconstruct a 3D solid from an unstructured set of points scattered on the object s surface. The representation produced is ... -
Thoughtful Drawings: A Computational Model of the Cognitive Nature of Children s Drawing
(Blackwell Science Ltd and the Eurographics Association, 1995)An interpretation of children s drawing is presented that is based on active perception of the world and the construction of an equivalent self contained two-dimensional world. This model is implemented in a computer program ... -
Shading with Curve Light Sources1
(Blackwell Science Ltd and the Eurographics Association, 1995)A new shading model for curve light sources is presented. It accounts for both diffuse reflection and specular reflection of the illuminated surface. By regarding a linear light source as a directional quadrilateral light ... -
A rational model of the surface swept by a curve*
(Blackwell Science Ltd and the Eurographics Association, 1995)This paper shows how to construct a rational Bezier model of a swept surface that interpolates N frames (i.e., N position/orientation pairs) of a fixed rational space curve c(s) and maintains the shape of the curve at all ... -
Fast Wavelet Based Volume Rendering by Accumulation of Transparent Texture Maps
(Blackwell Science Ltd and the Eurographics Association, 1995)In the following paper, a new method for fast and accurate volume intensity and color integration is elaborated, which employs wavelet decompositions and texture mapping. At this point, it comprises and unifies the advantages ... -
A Multimedia Constraint System1
(Blackwell Science Ltd and the Eurographics Association, 1995)The MADE constraint system provides excellent opportunities to introduce constraints in a multimedia application. Multimedia applications are not only a good place to experiment with constraint systems- constraints in a ... -
Reasoning About Gestural Interaction
(Blackwell Science Ltd and the Eurographics Association, 1995)Many of the reported developments in the design of virtual spaces or visualisation systems are based on improvements in technology, either physical devices or algorithms for achieving realistic renderings within real-time ...