Now showing items 1-20 of 49

    • Particle-Based Simulation of Fluids 

      Premzoe, Simon; Tasdizen, Tolga; Bigler, James; Lefohn, Aaron; Whitaker, Ross T. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      Due to our familiarity with how fluids move and interact, as well as their complexity, plausible animation of fluidsremains a challenging problem. We present a particle interaction method for simulating fluids. The ...
    • Volumetric cell-and-portal generation 

      Haumont, D.; Debeir, O.; Sillion, F. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present an algorithm to generate a cell-and-portal decomposition of general indoor scenes. The method is an adaptation of the 3D watershed transform, computed on a distance-to-geometry sampled field. The watershed is ...
    • Cloth Motion Capture 

      Pritchard, D.; Heidrich, W. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      Recent years have seen an increased interest in motion capture systems. Current systems, however, are limitedto only a few degrees of freedom, so that effectively only the motion of linked rigid bodies can be acquired. ...
    • Compression of 2D Vector Fields Under Guaranteed Topology Preservation 

      Theisel, H.; Rossl, Ch.; Seidel, H.-P. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      In this paper we introduce a new compression technique for 2D vector fields which preserves the complete topology, i.e., the critical points and the connectivity of the separatrices. As the theoretical foundation of the ...
    • Hierarchical Context-based Pixel Ordering 

      Bar-Joseph, Ziv; Cohen-Or, Daniel (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present a context-based scanning algorithm which reorders the input image using a hierarchical representationof the image. Our algorithm optimally orders (permutes) the leaves corresponding to the pixels, by minimizing ...
    • Fast Photo-Realistic Rendering of Trees in Daylight 

      Qin, Xueying; Nakamae, Eihachiro; Tadamura, Katsumi; Nagai, Yasuo (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We propose a fast approach for photo-realistic rendering of trees under various kinds of daylight, which is particularlyuseful for the environmental assessment of landscapes. In our approach the 3D tree models are transformedto ...
    • Multi-scale Feature Extraction on Point-Sampled Surfaces 

      Pauly, Mark; Keiser, Richard; Gross, Markus (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present a new technique for extracting line-type features on point-sampled geometry. Given an unstructuredpoint cloud as input, our method first applies principal component analysis on local neighborhoods toclassify ...
    • Field Functions for Blending Range Controls on Soft Objects 

      - (Blackwell Publishers, Inc and the Eurographics Association, 2003)
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    • Reanimating Faces in Images and Video 

      Blanz, V.; Basso, C.; Poggio, T.; Vetter, T. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      This paper presents a method for photo-realistic animation that can be applied to any face shown in a single imageor a video. The technique does not require example data of the person's mouth movements, and the image to ...
    • Narrative Use of Sign Language by a Virtual Character for the Hearing Impaired 

      Rieger, Thomas; Braun, Norbert (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      This paper describes the concept and control of a 3d virtual character system with facial expressions and gesturesas a conversational user interface with narrative expressiveness for the hearing impaired. The gestures and ...
    • Visyllable Based Speech Animation 

      Kshirsagar, Sumedha; Magnenat-Thalmann, Nadia (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      Visemes are visual counterpart of phonemes. Traditionally, the speech animation of 3D synthetic faces involvesextraction of visemes from input speech followed by the application of co-articulation rules to generate ...
    • A Few Good Lines: Suggestive Drawing of 3D Models 

      Sousa, Mario Costa; Prusinkiewicz, Przemyslaw (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present a method for rendering 3D models in the traditionalline-drawing style used in artistic and scientificillustrations. The goal is to suggest the 3D shape of the objectsusing a small number of lines drawn with ...
    • Animation of Bubbles in Liquid 

      Hong, Jeong-Mo; Kim, Chang-Hun (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present a new fluid animation technique in which liquid and gas interact with each other, using the exampleof bubbles rising in water. In contrast to previous studies which only focused on one fluid, our system considersboth ...
    • Freeform Shape Representations for Efficient Geometry Processing 

      Kobbelt, Leif (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      The most important concepts for the handling and storage of freeform shapes in geometry processing applications are parametric representations and volumetric representations. Both have their specific advantages and drawbacks. ...
    • ShieldTester: Cell-to-Cell Visibility Test for Surface Occluders 

      Navazo, I.; Rossignac, J.; Jou, J.; Shariff, R. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present a novel Cell-To-Cell Visibility (C2CV) algorithm, which given two polyhedra, AandBand a connectedand oriented manifold triangle mesh, S offers a simple, fast and conservative test for detecting when A and B ...
    • Sub-Voxel Topology Control for Level-Set Surfaces 

      Bischoff, Stephan; Kobbelt, Leif (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      Active contour models are an efficient, accurate, and robust tool for the segmentation of 2D and 3D image data.In particular, geometric deformable models (GDM) that represent an active contour as the level set of an ...
    • Field Functions for Blending Range Controls on Soft Objects 

      Hsu, P. C.; Lee, C. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      This paper proposes new field functions that have adjustable inner radius and outer radius of influence. Incorporatingthe proposed field functions with soft object modeling, soft blending, Ricci's super-ellipsoid blends, ...
    • Planning Collision-Free Reaching Motions for Interactive Object Manipulation and Grasping 

      Kallmann, Marcelo; Aubel, Amaury; Abaci, Tolga; Thalmann, Daniel (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      We present new techniques that use motion planning algorithms based on probabilistic roadmaps to control 22 degrees of freedom (DOFs) of human-like characters in interactive applications. Our main purpose is the automatic ...
    • BDAM - Batched Dynamic Adaptive Meshes for High Performance Terrain Visualization 

      Cignoni, P.; Ganovelli, F.; Gobbetti, E.; Marton, F.; Ponchio, F.; Scopigno, R. (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      This paper describes an efficient technique for out-of-core rendering and management of large textured terrainsurfaces. The technique, called Batched Dynamic Adaptive Meshes (BDAM), is based on a paired tree structure:a ...
    • Planned Sampling of Spatially Varying BRDFs 

      Lensch, Hendrik P.A.; Lang, Jochen; Sa, Asla M.; Seidel, Hans-Peter (Blackwell Publishers, Inc and the Eurographics Association, 2003)
      Measuring reflection properties of a 3D object involves capturing images for numerous viewing and lightingdirections. We present a method to select advantageous measurement directions based on analyzing the estimationof ...