Now showing items 3-22 of 30

    • Computing Visibility for Triangulated Panoramas 

      Fu, Chi-Wing; Wong, Tien-Tsin; Heng, Pheng-Ann (The Eurographics Association, 1999)
      A visibility algorithm for triangulated panoramas is proposed. The algorithm can correctly resolve the visibility without making use of any depth information. It is especially useful when depth information is not available, ...
    • Decoupling Polygon Rendering from Geometry using Rasterization Hardware 

      Westermann, Rüdiger; Sommer, Ove; Ertl, Thomas (The Eurographics Association, 1999)
      The dramatically increasing size of polygonal models resulting from 3D scanning devices and advanced modeling techniques requires new approaches to reduce the load of geometry transfer and processing. In order to supplement ...
    • Disruptive Technologies in Computer Graphics: Past, Present, and Future 

      Greenberg, Donald P. (The Eurographics Association, 1999)
      The history and famous landmarks of computer graphics hardware are well known. Starting with Ivan Sutherland s Sketchpad system in the early 1960 s, the first generation of computer graphics hardware consisted of calligraphic ...
    • Effective Compression Techniques for Precomputed Visibility 

      Panne, Michiel van de; Stewart, A. James (The Eurographics Association, 1999)
      In rendering large models, it is important to identify the small subset of primitives that is visible from a given viewpoint. One approach is to partition the viewpoint space into viewpoint cells, and then precompute a ...
    • Efficient Displacement Mapping by Image Warping 

      Schaufler, Gernot; Priglinger, Markus (The Eurographics Association, 1999)
      While displacement maps can provide a rich set of visual detail on otherwise simple surfaces, they have always been very expensive to render. Rendering has been done using ray-tracing and by introducing a great number of ...
    • Face Cluster Radiosity 

      Willmott, Andrew J.; Heckbert, Paul S.; Garland, Michael (The Eurographics Association, 1999)
      An algorithm for simulating diffuse interreflection in complex three dimensional scenes is described. It combines techniques from hierarchical radiosity and multiresolution modelling. A new face clustering technique for ...
    • Gathering for Free in RandomWalk Radiosity 

      Sbert, Mateu; Brusi, Alex; Bekaert, Philippe (The Eurographics Association, 1999)
      We present a simple technique that improves the efficiency of random walk algorithms for radiosity. Each generated random walk is used to simultaneously sample two distinct radiosity estimators. The first estimator is the ...
    • Geospecific rendering of alpine terrain 

      Premoze, Simon; Thompson, William B.; Shirley, Peter (The Eurographics Association, 1999)
      Realistic rendering of outdoor terrain requires both that the geometry of the environment be modeled accurately and that appropriate texturing be laid down on top of that geometry. While elevation data is widely available ...
    • Group Accelerated Shooting Methods for Radiosity 

      Rousselle, Francois; Renaud, Christophe (The Eurographics Association, 1999)
      The introduction of the Progressive Refinement method was the starting point of interactivity in the radiosity illumination process. Overshooting methods brought an important acceleration to the convergence particularly ...
    • Hierarchical Image-Based Rendering using Texture Mapping Hardware 

      Max, Nelson; Deussen, Oliver; Keating, Brett (The Eurographics Association, 1999)
      Multi-layered depth images containing color and normal information for subobjects in a hierarchical scene model are precomputed with standard zbuffer hardware for six orthogonal views. These are adaptively selected according ...
    • An Illumination Model for a System of Isotropic Substrate- Isotropic Thin Film with Identical Rough Boundaries 

      Icart, Isabelle; Arqués, Didier (The Eurographics Association, 1999)
      A new physically-based illumination model describing the interaction of light with a system composed of an isotropic substrate coated by an isotropic film with geometrically identical statistical rough boundaries (ITF) is ...
    • Image-Based BRDF Measurement Including Human Skin 

      Marschner, Stephen R.; Westin, Stephen H.; Lafortune, Eric P. F.; Torrance, Kenneth E.; Greenberg, Donald P. (The Eurographics Association, 1999)
      We present a new image-based process for measuring the bidirectional reflectance of homogeneous surfaces rapidly, completely, and accurately. For simple sample shapes (spheres and cylinders) the method requires only a ...
    • Information Theory Tools for Scene Discretization 

      Feixas, Miquel; Acebo, Esteve del; Bekaert, Philippe; Sbert, Mateu (The Eurographics Association, 1999)
      Finding an optimal discretization of a scene is an important but difficult problem in radiosity. The efficiency of hierarchical radiosity for instance, depends entirely on the subdivision criterion and strategy that is ...
    • Interactive Ray-Traced Scene Editing Using Ray Segment Trees 

      Bala, Kavita; Dorsey, Julie; Teller, Seth (The Eurographics Association, 1999)
      This paper presents a ray tracer that facilitates near-interactive scene editing with incremental rendering; the user can edit the scene both by manipulating objects and by changing the viewpoint. Our system uses object-space ...
    • Interactive Rendering using the Render Cache 

      Walter, Bruce; Drettakis, George; Parker, Steven (The Eurographics Association, 1999)
      Interactive rendering requires rapid visual feedback. The render cache is a new method for achieving this when using high-quality pixel-oriented renderers such as ray tracing that are usually considered too slow for ...
    • Interactive Rendering with Arbitrary BRDFs using Separable Approximations 

      Kautz, Jan; McCool, Michael D. (The Eurographics Association, 1999)
      A separable decomposition of bidirectional reflectance distributions (BRDFs) is used to implement arbitrary reflectances from point sources on existing graphics hardware. Two-dimensional texture mapping and compositing ...
    • Interactive Virtual Relighting and Remodeling of Real Scenes 

      Loscos, Céline; Frasson, Marie-Claude; Drettakis, George; Walter, Bruce; Granier, Xavier; Poulin, Pierre (The Eurographics Association, 1999)
      Lighting design is often tedious due to the required physical manipulation of real light sources and objects. As an alternative, we present an interactive system to virtually modify the lighting and geometry of scenes with ...
    • Light Field Techniques for Reflections and Refractions 

      Heidrich, Wolfgang; Lensch, Hendrik; Cohen, Michael F.; Seidel, Hans-Peter (The Eurographics Association, 1999)
      Reflections and refractions are important visual effects that have long been considered too costly for interactive applications. Although most contemporary graphics hardware supports reflections off curved surfaces in the ...
    • Lighting Design: A Goal Based Approach Using Optimisation 

      Costa, António Cardoso; Sousa, António Augusto; Ferreira, Fernando Nunes (The Eurographics Association, 1999)
      There is a need for reliable lighting design applications because available tools are limited and inappropriate for interactive or creative use. Architects and lighting designers need those applications to define, predict, ...
    • Multiple Textures Stitching and Blending on 3D Objects 

      Rocchini, C.; Cignoni, P.; Montani, C.; Scopigno, R. (The Eurographics Association, 1999)
      In this paper we propose a new approach for mapping and blending textures on 3D geometries. The system starts from a 3D mesh which represents a real object and improves this model with pictorial detail. Texture detail is ...