Issue 3: Recent submissions

Now showing items 21-40 of 41

    • 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 ...

    • Getting Rid of Links in Hierarchical Radiosity 

      Stamminger, M.; Schirmacher, H.; Slusallek, Ph.; Seidel, H.-P. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Hierarchical radiosity with clustering has positioned itself as one of the most efficient algorithms for computing global illumination in non-trivial environments. However, using hierarchical radiosity for complex scenes ...

    • Author Index 

      Unknown author (Blackwell Publishers Ltd and the Eurographics Association, 1998)

    • A Vector Approach for Global Illumination in Ray Tracing 

      Zaninetti, Jacques; Serpaggi, Xavier; Peroche, Bernard (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper presents a method taking global illumination into account in a ray tracing environment. A vector approach is introduced, which allows to deal with all the types of light paths and the directional properties of ...

    • A Two-Pass Hardware-Based Method for Hierarchical Radiosity 

      Martin, I.; Pueyo, X.; Tost, D. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Finite elements methods for radiosity are aimed at computing global illumination solutions efficiently. However these methods are not suitable for obtaining high quality images due to the lack of error control. Two-pass ...

    • Progressive Iso-Surface Extraction from Hierarchical 3D Meshes 

      Grosso, Roberto; Ertl, Thomas (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      A multiresolution data decomposition offers a fundamental framework supporting compression, progressive transmission, and level-of-detail (LOD) control for large two or three dimensional data sets discretized on complex ...

    • Maximum Intensity Projection Using Splatting in Sheared Object Space 

      Cai, Wenli; Sakas, Georgios (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this paper we present a new Maximum Intensity Projection (MIP) algorithm which was implemented employing splatting in a shear-warp context. This algorithm renders a MIP image by first splatting each voxel on two ...

    • Multiresolution Isosurface Extraction with Adaptive Skeleton Climbing 

      Poston, Tim; Wong, Tien-Tsin; Heng, Pheng-Ann (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      An isosurface extraction algorithm which can directly generate multiresolution isosurfaces from volume data is introduced. It generates low resolution isosurfaces, with 4 to 25 times fewer triangles than that generated by ...

    • Simulating Wood Using a Voxel Approach 

      Buchanan, John W. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this paper we present a technique for generating three-dimensional wood textures using a regular texture array. Currently three-dimensional wood textures are generated using procedural textures. Procedural textures are ...

    • Importance Driven Texture Coordinate Optimization 

      Sloan, Peter-Pike J.; Weinstein, David M.; Brederson, J. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Traditionally, texture coordinates have been generated based solely on the modelâ s geometry, often even before a modelâ s textures have been created. With the arrival of new technologies, such as 3D paint programs, ...

    • Anisotropic Solid Texture Synthesis Using Orthogonal 2D Views 

      Dischler, J.M.; Ghazanfarpour, D.; Freydier, R. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      Analytical approaches, based on digitised 2D texture models, for an automatic solid (3D) texture synthesis have been recently introduced to Computer Graphics. However, these approaches cannot provide satisfactory solutions ...

    • Optical Flow Rendering 

      Park, Tae-Joon; Shin, Sung Yong; Lee, Seungyong (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      This paper proposes a new approach to image-based rendering that generates an image viewed from an arbitrary camera position and orientation by rendering optical flows extracted from reference images. To derive valid optical ...

    • Egocentric Object Manipulation in Virtual Environments: Empirical Evaluation of Interaction Techniques 

      Poupyrev, I.; Ichikawa, T.; Weghorst, S.; Billinghurst, M. (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      The acceptance of virtual environment (VE) technology requires scrupulous optimization of the most basic interactions in order to maximize user performance and provide efficient and enjoyable virtual interfaces. Motivated ...

    • A Light Hierarchy for Fast Rendering of Scenes with Many Lights 

      Paquette, Eric; Poulin, Pierre; Drettakis, George (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      We introduce a new data structure in the form of a light hierarchy for efficiently ray-tracing scenes with many light sources. An octree is constructed with the point light sources in a scene. Each node represents all the ...

    • A Collaborative Scene Editor for VRML Worlds 

      Lu, Tain-chi; Chiang, Chuanwen; Lin, Ming-tang; Lee, Chungnan (Blackwell Publishers Ltd and the Eurographics Association, 1998)
      In this paper, we analyze the requirements for a Web-based collaborative infrastructure within a virtual world. Additionally, we combine several tools and methodologies to propose a flexible and fluid collaborative environment ...