• Interactive Boundary Computation of Boolean Combinations of Sculptured Solids 

  Krishnan, S.; Gopi, M.; Manocha, D.; Mine, M. (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  We present algorithms and systems for interactive boundary computation of Boolean combinations of sculptured solids. The algorithm is applicable to all spline solids and computes an accurate boundary representation. To ...

• Interactive Rendering of Deforming NURBS Surfaces 

  Li, Frederick W. B.; Lau, Rynson W. H.; Green, Mark (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  Non-uniform rational B-splines (NURBS) has been widely accepted as a standard tool for geometry representation and design. Its rich geometric properties allow it to represent both analytic shapes and free-form curves and ...

• Polyhedral Surface Modeling with a Diffusion System 

  Kuriyama, Shigeru; Tachibana, Keihachiro (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 ...

• Animation by Deformation of Space-Time Objects 

  Aubert, Fabrice; Bechmann, Dominique (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  This article presents the properties of animation with space-time objects. A space-time object means here a geometrical object embedded in R4 with a volumic topology. Resulting animations are obtained by deforming space-time ...

• Orthogonal Decomposition of Non-Uniform Bspline Spaces using Wavelets 

  Kazinnik, Roman; Elber, Gershon (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  We take advantage of ideas of an orthogonal wavelet complement to produce multiresolution orthogonal decomposition of nonuniform Bspline (NUB) spaces. The editing of NUB curves and surfaces can be handled at different ...

• A Million Polygons, a Million Pixels: Which is Heavier? 

  Sillion, Francois X. (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  The impressive progress of rendering software and hardware over the last two decades often leads to the - too rapid - conclusion that high-quality 3D imagery can now be incorporated in all sorts of applications. Interestingly, ...

• Modelling the Garden of Perfect Brightness 

  Wang, LiFeng; Botta, David; Ellefson, Chris; Fournier, Alain (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  The Yuan Ming Yuan, the Garden of Perfect Brightness, was the culmination of the art of Chinese Imperial gardens. Covering 350 hectares (875 acres) northwest of Beijing, it included 140 distinct sites, 2000 structures, ...

• The Personal Interaction Panel - a Two-Handed Interface for Augmented Reality 

  Szalavari, Zsolt; Gervautz, Michael (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 ...

• A Modeling and Rendering Method for Snow by Using Metaballs 

  Nishita, Tomoyuki; Iwasaki, Hiroshi; Dobashi, Yoshinori; Nakamae, Eihachiro (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  The display of natural scenes such as mountains, trees, the earth as viewed from space, the sea, and waves have been attempted. Here a method to realistically display snow is proposed.In order to achieve this, two important ...

• Using Subdivision on Hierarchical Data to Reconstruct Radiosity Distribution 

  Kobbelt, Leif; Stamminger, Marc; Seidel, Hans-Peter (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 ...

• Normal Computation for Discrete Surfaces in 3D Space 

  Thürmer, Grit; Wüthrich, Charles A. (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  Associating normal vectors to surfaces is essential for many rendering algorithms. We introduce a new method to compute normals on discrete surfaces in object space. Assuming that the surface separates space locally into ...

• Generating Reflected Directions from BRDF Data 

  Lalonde, Paul; Fournier, Alain (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  Monte-Carlo path tracing algorithms for computer graphics require that given an incident light ray at a surface an outgoing direction can be computed with a distribution given by the magnitude of the bidirectional reflectance ...

• Optimal Source Selection in Shooting Random Walk Monte Carlo Radiosity 

  Sbert, Mateu (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  In this paper we study how to optimally select between different sources in shooting random walk Monte Carlo Radiosity. Until now the probability of selecting a source has been made proportional to the importance of that ...

• Virtually Documented Environments: A New Interface Paradigm for Task-oriented Access to Information 

  Kakez, Samory; Conan, Vania; Bisson, Pascal (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 ...

• Bounded Radiosity - Illumination on General Surfaces and Clusters 

  Stamminger, Marc; Slusallek, Philipp; Seidel, Hans-Peter (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  Traditionally, Radiosity algorithms have been restricted to scenes made from planar patches. Most algorithms for computing form factors and the subdivision criterion for hierarchical methods implicitly assume planar patches. ...

• A Framework for Interacting with Paper 

  Robinson, Peter; Sheppard, Dan; Watts, Richard; Harding, Robert; Lay, Steve (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  This paper reports on ways of using digitised video from television cameras in user interfaces for computer systems. The DigitalDesk is built around an ordinary physical desk and can be used as such, but it has extra ...

• Radiosity with Well Distributed Ray Sets 

  Neumann, Laszlo; Neumann, Attila; Bekaert, Philippe (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 ...

• An Analysis of Quasi-Monte Carlo Integration Applied to the Transillumination Radiosity Method 

  Szirmay-Kalos, Laszlo; Foris, Tibor; Neumann, Laszlo; Csebfalvi, Balazs (Blackwell Publishers Ltd and the Eurographics Association, 1997)

  This paper presents an enhanced transillumination radiosity method that can provide accurate solutions at relatively low computational cost. The proposed algorithm breaks down the double integral of the gathered power to ...

• A Rendering Equation for Specular Transfers and Its Integration into Global Illumination 

  Yu, Yizhou; Wu, Hong (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 ...

• Painting-like Image Emphasis based on Human Vision Systems 

  Tanaka, Toshimitsu; Ohnishi, Noboru (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 ...

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