Browsing Issue 3 by Title
Now showing items 28-41 of 41
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Painting-like Image Emphasis based on Human Vision Systems
(Blackwell Publishers Ltd and the Eurographics Association, 1997)Regional image emphasis is often evident in paintings and illustrations. This technique increases local contrast while reducing global contrast by amplifying image intensity on shadowed surfaces, reducing intensity on ... -
The Personal Interaction Panel - a Two-Handed Interface for Augmented Reality
(Blackwell Publishers Ltd and the Eurographics Association, 1997)This paper describes the introduction of a new interaction paradigm to augmented reality applications. The everyday tool handling experience of working with pen and notebooks is extended to create a three dimensional ... -
Polyhedral Surface Modeling with a Diffusion System
(Blackwell Publishers Ltd and the Eurographics Association, 1997)This paper presents a method of generating polyhedral surfaces by using a diffusion system that calculates the positional and normal vectors on their vertices. The system generates smooth shapes that satisfy the minimum ... -
Preface and Table of Contents (EG 1997, CGF 16-3)
(Blackwell Publishers Ltd and the Eurographics Association, 1997)- -
A Procedural Description of Geometric Textures by Spectral and Spatial Analysis of Profiles
(Blackwell Publishers Ltd and the Eurographics Association, 1997)In this paper we describe a method for automatically generating procedural "geometric" textures, using a hybrid (spectral and spatial) analysis of profiles (ID curves). The profile describes a certain height variation for ... -
Radiosity with Well Distributed Ray Sets
(Blackwell Publishers Ltd and the Eurographics Association, 1997)In this paper we present a new radiosity algorithm, based on the notion of a well distributed ray set (WDRS). A WDRS is a set of rays, connecting mutually visible points and patches, that forms an approximate representation ... -
A Rendering Equation for Specular Transfers and Its Integration into Global Illumination
(Blackwell Publishers Ltd and the Eurographics Association, 1997)In this paper, we present a rigorous theoretical formulation of the fundamental problem-indirect illumination from area sources via curved ideal specular surfaces. Intensity and area factors are introduced to clarify this ... -
Robust Computation of Intersection Graph between Two Solids
(Blackwell Publishers Ltd and the Eurographics Association, 1997)We propose a new robust algorithm for Boolean operations on solid models. The algorithm produces a consistent intersection graph between two input solids whose geometrical data are represented in floating point numbers. ... -
Selective Pixel Transmission for Navigating in Remote Virtual Environments
(Blackwell Publishers Ltd and the Eurographics Association, 1997)This paper presents a technique to improve the performance of a walkthrough in remote virtual environments, where a scene is rendered jointly by the server and the client, in order to reduce the network requirements as ... -
Steering Image Generation with Wavelet Based Perceptual Metric
(Blackwell Publishers Ltd and the Eurographics Association, 1997)It is often the case that images generated by image synthesis algorithms are judged by visual examination. The user resorts to an iterative refinement process of inspection and rendering until a satisfactory image is ... -
Stochastic Dynamics: Simulating the Effects of Turbulence on Flexible Structures
(Blackwell Publishers Ltd and the Eurographics Association, 1997)This paper addresses the problem of realistically simulating the motion of tree-branches subjected to turbulence. Since the resulting motion is random in nature, we model it as a stochastic process. We synthesize this ... -
Tunnel-Free Supercover 3D Polygons and Polyhedra
(Blackwell Publishers Ltd and the Eurographics Association, 1997)A new discrete 3D line and 3D polygon, called Supercover 3D line and Supercover 3D polygon, are introduced. Analytical definitions are provided. The Supercover 3D polygon is a tunnel free plane segment defined by vertices ... -
Using Subdivision on Hierarchical Data to Reconstruct Radiosity Distribution
(Blackwell Publishers Ltd and the Eurographics Association, 1997)Computing global illumination by finite element techniques usually generates a piecewise constant approximation of the radiosity distribution on surfaces. Directly displaying such scenes generates artefacts due to ... -
Virtually Documented Environments: A New Interface Paradigm for Task-oriented Access to Information
(Blackwell Publishers Ltd and the Eurographics Association, 1997)We present a suitable virtually documented environment system providing the user with high level interaction possibilities. The system is dedicated to applications where the operator needs to have his hands free in order ...