Browsing Issue 3 by Title

Now showing items 17-36 of 41

    • GKS-9x: Some Implementation Considerations 

      Damnjanovic, L.B.; Duce, D.A.; Robinson, S.K. (Blackwell Science Ltd and the Eurographics Association, 1993)
      The Graphical Kernel System (GKS) was published as an ISO standard for computer graphics programming in August 1985. GKS is now undergoing revision in ISO/IEC and at the time of writing the text of the Draft International ...

    • An Integral Geometry Based Method for Fast Form-Factor Computation 

      Sbert, Mateu (Blackwell Science Ltd and the Eurographics Association, 1993)
      Monte Carlo techniques have been widely used in rendering algorithms for local integration. For example, to compute the contribution of a patch to the luminance of another. In the present paper we propose an algorithm based ...

    • An Integrated System for Modeling, Animating and Rendering Hair 

      Daldegan, Agnes; Thalmann, Nadia Magnenat; Kurihara, Tsuneya; Thalmann, Daniel (Blackwell Science Ltd and the Eurographics Association, 1993)
      There are basically four problems to solve in order to produce realistic animated synthetic actors with hair: hair modeling and creation, hair motion, collision detection and hair rendering. This paper describes a complete ...

    • Interactive Neural Network Texture Analysis and Visualization for Surface Reconstruction in Medical Imaging 

      Busch, C.; Gro?, M.H. (Blackwell Science Ltd and the Eurographics Association, 1993)
      The following paper describes a new approach for the automatic segmentation and tissue classification of anatomical objects such as brain tumors from magnetic resonance imaging (MRI) data sets using artificial neural ...

    • Introducing blending operations in feature models 

      Laakko, Timo; Mantyla, Martti (Blackwell Science Ltd and the Eurographics Association, 1993)
      We describe the implementation of a blending facility in the context of a feature modelling system where solid and feature-based modelling operations can be utilized in parallel during the design process of a part. The ...

    • Landscapes Synthesis Achieved through Erosion and Deposition Process Simulation 

      Roudier, P.; Peroche, B.; Perrin, M. (Blackwell Science Ltd and the Eurographics Association, 1993)
      This paper describes an original approach to terrain evolution in landscapes synthesis. In order to create some realistic landforms, we simulate geologically contrasted terrains and apply to them deterministic erosion ...

    • Modeling of Skylight and Rendering of Outdoor Scenes 

      Tadamura, Katsumi; Nakamae, Eihachiro; Kaneda, Kazufumi; Baba, Masashi; Yamashita, Hideo and Nishita, Tomoyuki (Blackwell Science Ltd and the Eurographics Association, 1993)
      Photorealistic animated images are extremely effective for pre-evaluating visual impact of city renewal and construction of tall buildings. In order to generate a photorealistic image not only the direct sunlight but also ...

    • A New Paradigm for Geometric Processing 

      Yamaguchi, Fujio; Niizeki, Masatoshi (Blackwell Science Ltd and the Eurographics Association, 1993)
      A new paradigm for geometric processing is proposed. The paradigm can be featured by the four key phrases: (1) Totally Four Dimensional Homogeneous Processing, (2) 4 ? 4 Matrix Method and 4 ? 4 Determinant Method, (3) ...

    • A New Radiosity Approach Using Area Sampling for Parametric Patches 

      Nishita, Tomoyuki; Nakamae, Eihachiro (Blackwell Science Ltd and the Eurographics Association, 1993)
      A high precision illumination model is indispensable for lighting simulation and realistic image synthesis. For the purpose of improving realism, research on global illumination has been done, and several papers on radiosity ...

    • Nonsplitting Macro Patches for Implicit Cubic Spline Surfaces 

      Guo, B. (Blackwell Science Ltd and the Eurographics Association, 1993)
      Macro patches are important for generating quadric or cubic implicit spline surfaces from the input of a polyhedron. All existing macro patches split the triangular facets of the polyhedron- this paper presents cubic ...

    • An Object Model for Multimedia Programming 

      Arbab, F.; Herman, I.; Reynolds, G.J. (Blackwell Science Ltd and the Eurographics Association, 1993)
      The development of multimedia applications is a complex task. Much of this complexity stems from requirements associated with programming multiple media objects and the control of dependences and inter-relationships between ...

    • On the Application of Quantization and Dithering Techniques to History of Arts 

      Coltelli, P.; Faconti, G.; Marfori, F. (Blackwell Science Ltd and the Eurographics Association, 1993)
      The diffusion of computing techniques within humane studies is considerably increasing, due to technological advances and reduction in computing costs, with History of Arts being one of the most interesting fields of ...

    • Parallel 3D Delaunay Triangulation 

      Cignoni, P.; Montani, C.; Perego, R.; Scopigno, R. (Blackwell Science Ltd and the Eurographics Association, 1993)

    • Photo-Realistic Imaging of Digital Terrains 

      Cohen, Daniel; Shaked, Amit (Blackwell Science Ltd and the Eurographics Association, 1993)
      We present a method for the generation of photo-realistic images of views over terrain datasets by mapping a digital aerial photograph on a perspective projection of a digital elevation map. We use high resolution for both ...

    • A Progressive Radiosity Algorithm for Scenes Containing Curved Surfaces 

      Bao, Hujun; Peng, Qunsheng (Blackwell Science Ltd and the Eurographics Association, 1993)
      Based on the theory of light energy transfer between two differential diffuse surface areas, a generalized radiosity approach is presented. Unlike the conventional radiosity method, curved surfaces are subdivided into ...

    • A Prototype of a Cooperative Visualization Workplace for the Aerodynamicist 

      Pagendarm, H.-G.; Walter, B. (Blackwell Science Ltd and the Eurographics Association, 1993)
      Several feasibility studies for cooperative visualization were performed based on an existing modular visualization system. Two different architectures for the implementation of a cooperative system were identified, ...

    • Pseudo-Satellitefilm Using Fractal Clouds to Enhance Animated Weather Forecasting 

      Sakas, Georgios; Schroder, Florian; Koppert, Hans-Joachim (Blackwell Science Ltd and the Eurographics Association, 1993)
      We have developed a system enabling the National German Meteorological Office to generate pseudo-satellite images and video sequences based on their weather forecasting simulation data. With our system meteorologists can ...

    • Quality Control of an Interpolation Method for Discontinuous Parametric Surfaces 

      Seron, F.J.; Torrens, J.J; Magallon, J.A. (Blackwell Science Ltd and the Eurographics Association, 1993)
      In this paper we study a finite element interpolation method for fitting discontinuous parametric surfaces when the data points are the nodes of a curvilinear grid. Quality control of the interpolating surfaces is also ...

    • A Rendering Algorithm for Discrete Volume Density Objects 

      Blasi, Philippe; Le Saec, Bertrand; Schlick, Christophe (Blackwell Science Ltd and the Eurographics Association, 1993)
      We present a new algorithm for simulating the effect of light travelling through volume objects. Such objects (haze, fog, clouds.) are usually modelized by voxel grids which define their density distribution in a discrete ...

    • Scale-Invariant Minimum-Cost Curves: Fair and Robust Design Implements 

      Moreton, Henry P.; Sequin, Carlo H. (Blackwell Science Ltd and the Eurographics Association, 1993)
      Four functionals for the computation of minimum cost curves are compared. Minimization of these functionals result in the widely studied Minimum Energy Curve (MEC), the recently introduced Minimum Variation Curve (MVC), ...