Volume 17 (1998): Recent submissions

Now showing items 21-40 of 89

    • The Art of Knitted Fabrics, Realistic & Physically Based Modelling Of Knitted Patterns 

      Meißner, M.; Eberhardt, B. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this paper we will present a system to use three dimensional computer graphics in garment design. This system is capable to visualize the "real", i.e. the physically correct, appearance of a knitted fabric. A fast ...

    • Mass-Spring Simulation using Adaptive Non-Active Points 

      Howlett, P.; Hewitt, W.T. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper introduces an adaptive component to a mass-spring system as used in the modelling of cloth for computer animation. The new method introduces non-active points to the model which can adapt the shape of the cloth ...

    • A New Approach for Direct Manipulation of Free-Form Curve 

      Zheng, J.M.; Chan, K.W.; Gibson, I. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      There is an increasing demand for more intuitive methods for creating and modifying free-form curves and surfaces in CAD modeling systems. The methods should be based not only on the change of the mathematical parameters, ...

    • An Enhanced Spring Model for Information Visualization 

      Theisel, Holger; Kreuseler, Matthias (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this paper we present a new technique for visualizing multidimensional information. We describe objects of a higher dimensional information space as small closed free-form-surfaces in the visualization. The location, ...

    • The Convergence of Graphics and Imaging 

      Foley, James D. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Over twenty years ago a SIGGRAPH panel session addressed the convergence of computer graphics and image processing. At that time the emphasis was on low-level operations such as filtering to avoid anti-aliasing, and related ...

    • A Bernstein-Bezier Based Approach to Soft Tissue Simulation 

      Roth, S.H.; Gross, Markus H.; Turello, Silvio; Carls, Friedrich R. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper discusses a Finite Element approach for volumetric soft tissue modeling in the context of facial surgery simulation. We elaborate on the underlying physics and address some computational aspects of the finite ...

    • Real-time Biomechanically-based Muscle Volume Deformation using FEM 

      Zhu, Qing-hong; Chen, Yan; Kaufman, Arie (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper presents a voxel-based biomechanical model for muscle deformation using finite element method (FEM) and volume graphics. Hierarchical voxel meshes are reconstructed from filtered segmented muscle images followed ...

    • Rapid and Accurate Contact Determination between Spline Models using ShellTrees 

      Krishnan, S.; Gopi, M.; Lin, M.; Manocha, D.; Pattekar, A. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this paper, we present an efficient algorithm for contact determination between spline models. We make use of a new hierarchy, called ShellTree, that comprises of spherical shells and oriented bounding boxes. Each ...

    • Emotion Editing using Finite Elements 

      Koch, Rolf M.; Gross, Markus H.; Bosshard, Albert A. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper describes the prototype of a facial expression editor. In contrast to existing systems the presented editor takes advantage of both medical data for the simulation and the consideration of facial anatomy during ...

    • Subdivision Schemes for Thin Plate Splines 

      Weimer, Henrik; Warren, Joe (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Thin plate splines are a well known entity of geometric design. They are defined as the minimizer of a variational problem whose differential operators approximate a simple notion of bending energy. Therefore, thin plate ...

    • Molecular Dynamics Simulation in Virtual Environments 

      Ai, Z.; Frohlich, T. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      A virtual environment for interactive molecular dynamics simulation has been designed and implemented at the Fraunhofer Institute for Computer Graphics. Different kinds of virtual reality devices are used in the environment ...

    • Using Wavefront Tracing for the Visualization and Optimization of Progressive Lenses 

      Loos, J.; Slusallek, Ph.; Seidel, H.-P. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Progressive addition lenses are a relatively new approach to compensate for defects of the human visual system. While traditional spectacles use rotationally symmetric lenses, progressive lenses require the specification ...

    • Conservative Visibility and Strong Occlusion for Viewspace Partitioning of Densely Occluded Scenes 

      Cohen-Or, Daniel; Fibich, Gadi; Halperin, Dan; Zadicario, Eyal (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Computing the visibility of out-door scenes is often much harder than of in-door scenes. A typical urban scene, for example, is densely occluded, and it is effective to precompute its visibility space, since from a given ...

    • Frontiers in User-Computer Interaction 

      Van Dam, Andries (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this age of (near-)adequate computing power, the power and usability of the user interface is as key to an applicationâ s success as its functionality. Most of the code in modern desktop productivity applications resides ...

    • Perception Based Color Image Difference 

      Neumann, Laszlo; Matkovic, Kresimir; Purgathofer, Werner (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      A good image metric is often needed in digital image synthesis. It can be used to check the convergence behavior in progressive methods, to compare images rendered using various rendering methods etc. Since images are ...

    • Dithered Color Quantization 

      Buhmann, J. M.; Fellner, Dieter W.; Held, M.; Ketterer, J.; Puzicha, J. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Image quantization and digital halftoning are fundamental problems in computer graphics, which arise when displaying high-color images on non-truecolor devices. Both steps are generally performed sequentially and, in most ...

    • Space Discretization for Efficient Human Navigation 

      Bandi, Srikanth; Thalmann, Daniel (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      There is a large body of research on motion control of legs in human models. However, they require specification of global paths in which to move. A method for automatically computing a global motion path for a human in ...

    • Importance Driven Halftoning 

      Streit, L.; Buchanan, J. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Most halftoning techniques have been primarily concerned with achieving an accurate reproduction of local gray-scale intensities while avoiding the introduction of artifacts. A secondary concern in halftoning has been the ...

    • Screen-Space Constraints for Camera Movements: the Virtual Cameraman 

      Jardillier, Frank; Languenou, Eric (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This article presents a virtual cameraman which allows us to obtain the whole set of camera movements satisfying user defined constraints specified in the image space and/or constraints on the objects of the scene. This ...

    • Accelerated Walkthroughs of Virtual Environments Based on Visibility Preprocessing and Simplification 

      Wang, Yigang; Bao, Hujun; Peng, Qunsheng (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper proposes a new preprocessing method for interactive rendering of complex polygonal virtual environments. The approach divides the space that observer can reach into many rectangular viewpoint regions. For each ...