Now showing items 1-20 of 39

    • Three Architectures for Volume Rendering 

      Hesser, Jurgen; Manner, Reinhard; Knittel, Gunter; Strasser, Wolfgang; Pfister, Hanspeter; Kaufman, Arie (Blackwell Science Ltd and the Eurographics Association, 1995)
      Volume rendering is a key technique in scientific visualization that lends itself to significant exploitable parallelism. The high computational demands of real-time volume rendering and continued technological advances ...
    • Distributed Augmented Reality for Collaborative Design Applications 

      Ahlers, Klaus H.; Kramer, Andre; Breen, David E.; Chevalier, Pierre-Yves; Crampton, Chris; Rose, Eric; Tuceryan, Mihran; Whitaker, Ross T.; Greer, Douglas (Blackwell Science Ltd and the Eurographics Association, 1995)
      This paper presents a system for constructing collaborative design applications based on distributed augmented reality. Augmented reality interfaces are a natural method for presenting computer-based design by merging ...
    • A Multimedia Constraint System1 

      van Hintum, J.E.A.; Reynolds, G.J. (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 ...
    • Algorithms for Extracting Correct Critical Points and Constructing Topological Graphs from Discrete Geographical Elevation Data 

      Takahashi, Shigeo; Ikeda, Tetsuya; Shinagawa, Yoshihisa; Kunii, Tosiyasu L.; Ueda, Minoru (Blackwell Science Ltd and the Eurographics Association, 1995)
      Researchers in the fields of computer graphics and geographical information systems (GISs) have extensively studied the methods of extracting terrain features such as peaks, pits, passes, ridges, and ravines from discrete ...
    • Morphological Operations for Color-Coded Images 

      Busch, Christoph and Eberle, Michael (Blackwell Science Ltd and the Eurographics Association, 1995)
      The subject of this paper is the semantically based postprocessing of color-coded images such as classification results. We outline why the classical definition of mathematical morphology suffers if it is used for processing ...
    • Fast Shadowing Algorithm for Linear Light Sources 

      Tanaka, Toshimitsu; Takahashi, Tokiichiro (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 ...
    • An Incremental Alignment Algorithm for Parallel Volume Rendering 

      Or, Daniel Cohen; Fleishman, Shachar (Blackwell Science Ltd and the Eurographics Association, 1995)
      This paper introduces a data distribution scheme and an alignment algorithm for parallel volume rendering. The algorithm performs a single wrap-around shear transformation which requires only a regular inter-processor ...
    • The MADE Help System 

      Haindl, Michal; de Ruiter, Behr (Blackwell Science Ltd and the Eurographics Association, 1995)
      MADE is the acronym for the ESPRIT project 6307, whose aim is to develop an object oriented multimedia application development environment. As part of this project the MADE help system is designed to be a distributed ...
    • Visibility and Dead-Zones in Digital Terrain Maps 

      Or, Daniel Cohen; Shaked, Amit (Blackwell Science Ltd and the Eurographics Association, 1995)
      The problem of detecting the visible and hidden areas of a topographic surface from a given viewpoint is well known, and has applications in GIS and other fields. The computational geometry literature is rich with solutions ...
    • Shading with Curve Light Sources1 

      Bao, Hujun; Ying, Jianguo; Peng, Qunsheng (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 ...
    • Filtering, Clustering and Hierarchy Construction: a New Solution for Ray-Tracing Complex Scenes 

      Cazals, Frederic; Drettakis, George; Puech, Claude (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 ...
    • Automatic Reconstruction of Unstructured 3D Data: Combining a Medial Axis and Implicit Surfaces 

      Bittar, Eric; Tsingos, Nicolas; Gascuel, Marie-Paule (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 ...
    • Realizing 3D Visual Programming Environments within a Virtual Environment 

      Van Reeth, F.; Coninx, K.; De Backer, S.; Flerackers, E. (Blackwell Science Ltd and the Eurographics Association, 1995)
      In the visual programming community, many interesting graphical metaphors have been reported upon for representing computer programs graphically. Most of them have a 2D or 2.5D appearance on the screen in order to reflect ...
    • Two-step Prediction and Image Deflection for Exact Head Tracking in Virtual Environments 

      Mazuryk, Tomasz; Gervautz, Michael (Blackwell Science Ltd and the Eurographics Association, 1995)
    • Discrete Ray-Tracing of Huge Voxel Spaces 

      Stolte, Nilo; Caubet, Rene (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 ...
    • Synthesizing Feather Textures in Galliformes 

      Dai, Wen-Kai; Shih, Zen-Chung; Chang, Ruei-Chuan (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 ...
    • Fair Surface Reconstruction Using Quadratic Functionals 

      Kolb, Andreas; Pottmann, Helmut; Seidel, Hans-Peter (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 Real-time Continuous Alphabetic Sign Language to Speech Conversion VR System 

      Liang, Rung-Huei; Ouhyoung, Ming (Blackwell Science Ltd and the Eurographics Association, 1995)
      Many ways of communications are used between human and computer, while using gesture is considered to be one of the most natural way in a virtual reality system. Because of its intuitiveness and its capability of helping ...
    • Rendering of Surface and Volume Details in Volume Data* 

      CAI, Wenli; CHEN, Tianzhou; SHI, Jiaoying (Blackwell Science Ltd and the Eurographics Association, 1995)
      Aiming at the detail rendering in volume data, a new volume illumination model, called Composed Scattering Model (CSM), is presented. In order to enhance different details in volume data, scattering intensity is decomposed ...
    • Modeling 3D Curves of Minimal Energy 

      Veltkamp, Remco C.; Wesselink, Wieger (Blackwell Science Ltd and the Eurographics Association, 1995)
      Modeling a curve through minimizing its energy yields an overall smooth curve. A common way to model shape features is to perform the minimization subject to a number of interpolation constraints. This way of modeling is ...