Now showing items 2568-2587 of 2774

    • An Unbiased Hybrid Rendering Approach to Path Guiding 

      Jhang, Jia-Wun; Chang, Chun-Fa (The Eurographics Association, 2021)
      When we think of hybrid rendering of rasterization and ray tracing, we often consider rasterization as a mean to solve the primary rays and then consider ray tracing as a mean to add secondary effects. We take a different ...
    • Uncertain 2D Vector Field Topology 

      Otto, Mathias; Germer, Tobias; Hege, Hans-Christian; Theisel, Holger (The Eurographics Association and Blackwell Publishing Ltd, 2010)
      We introduce an approach to visualize stationary 2D vector fields with global uncertainty obtained by considering the transport of local uncertainty in the flow. For this, we extend the concept of vector field topology to ...
    • Uncertainty Visualization Methods in Isosurface Rendering 

      Rhodes, Philip J.; Laramee, Robert S.; Bergeron, R. Daniel; Sparr, Ted M. (Eurographics Association, 2003)
      We describe two techniques for rendering isosurfaces in multiresolution volume data such that the uncertainty (error) in the data is shown in the resulting visualization. In general the visualization of uncertainty in data ...
    • Understanding and Designing Perceptual Experiments 

      Cunningham, Douglas W.; Wallraven, Christian (The Eurographics Association, 2013)
      Humans and computer both have limited resources with which they must process the massive amount of information present in the natural world. For over 150 years, physiologists and psychologists have been performing experiments ...
    • Understanding Mystery Behind Example-Based Image Synthesis 

      Lu, J.; Lukác, M.; Sýkora, Daniel (The Eurographics Association, 2018)
      This tutorial presents a concise overview of development in the field of example-based image synthesis that over the last two decades rapidly evolved into a powerful tool enabling the production of synthetic imagery often ...
    • Undoing Subpixel Rendering for Better Screenshots 

      Loviscach, J. (The Eurographics Association, 2010)
      Subpixel rendering employs the spatial layout of the red, green, and blue slices of a single square pixel on a screen to enhance the horizontal resolution. This method has become the de-facto standard for displaying text. ...
    • A Unified Approach for Physical and Geometric Modeling for Graphics and Animation 

      Essa, Irfan A.; Sclaroff, Stan; Pentland, Alex (Blackwell Science Ltd and the Eurographics Association, 1992)
      We present a unified approach for geometric and physical modeling using implicit functions, for application to graphics and animation. This method extends previously proposed techniques, and allows the standard finite ...
    • A Unified Interpolatory and Approximation sqrt-3 Subdivision Scheme 

      Lin, Shujin; Luo, Xiaonan (The Eurographics Association, 2007)
      We have found that there is a relationship between the cubic B-spline and four-point curve subdivision method. In the paper it is used to deduce interpolatory subdivision schemes from cubic B-spline based approximation ...
    • Unified Skeletal Animation Reconstruction with Multiple Kinects 

      Ahmed, Naveed (The Eurographics Association, 2014)
      We present a new method for reconstructing a unified skeletal animation with multiple Kinects. Our method is able to reconstruct the unified skeletal animation from Kinect data over 360 degrees. We make use of all three ...
    • Uniform Sampling for Image-based Rendering Shiny Objects 

      Gong, Minglun; Yang, Yee-Hong (Eurographics Association, 2004)
      A novel sampling technique is presented, which can evenly sample all rays that pass through a rectangular surface. Different view directions are uniformly sampled based on the shape of a spiral. Projection positions are ...
    • Unifying Vector and Polygon Algorithms for Scan Conversion and Clipping 

      Kilgour, AIistair (Eurographics Association, 1987)
      In both scan conversion and clipping, algorithm for dealing with polygons are generally presented independently of those for vectors, although many of the operations performed are similar. This paper shows how polygon ...
    • Uniview - Visualizing the Universe 

      Klashed, Staffan; Hemingsson, Per; Emmart, Carter; Cooper, Matthew; Ynnerman, Anders (The Eurographics Association, 2010)
      This paper describes the development of the software system, Uniview, the motivation behind some of the most prominent features of the system and the strengths and challenges of running a development project in such close ...
    • Unsharp Masking, Countershading and Halos: Enhancements or Artifacts? 

      Trentacoste, Matthew; Mantiuk, Rafal; Heidrich, Wolfgang; Dufrot, Florian (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      Countershading is a common technique for local image contrast manipulations, and is widely used both in automatic settings, such as image sharpening and tonemapping, as well as under artistic control, such as in paintings ...
    • Unstructured Light Fields 

      Davis, Abe; Levoy, Marc; Durand, Fredo (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      We present a system for interactively acquiring and rendering light fields using a hand-held commodity camera. The main challenge we address is assisting a user in achieving good coverage of the 4D domain despite the ...
    • Unsupervised Learning of Disentangled 3D Representation from a Single Image 

      Lv, Junliang; Jiang, Haiyong; Xiao, Jun (The Eurographics Association, 2021)
      Learning 3D representation of a single image is challenging considering the ambiguity, occlusion, and perspective project of an object in an image. Previous works either seek image annotation or 3D supervision to learn ...
    • Unsupervised Three-dimensional Reconstruction of Small Rocks from a Single Two-dimensional Image 

      Gilardi, Marco; Watten, Phil L.; Newbury, Paul (The Eurographics Association, 2014)
      Surfaces covered with pebbles and small rocks can often be found in nature or in human-shaped environments. Generating an accurate three-dimensional model of these kind of surfaces from a reference image can be challenging, ...
    • Updating Polygonizations* 

      Abellanas, M.; Garcia, J.; Hernbandez, G.; Hurtado, F.; Serra, O.; Urrutia, J. (Blackwell Science Ltd and the Eurographics Association, 1993)
      In this paper we consider polygonizations that are robust when faced with changes in the vertices that are present or in their position. We analyze the dynamic maintenance of different types of polygonizations (monotone, ...
    • The Use of Finite Element Theory for Simulating Object and Human Body Deformations and Contacts 

      Gourret, Jean-Paul; Magnenat-Thalmann, Nadia; Thalmann, Daniel (Eurographics Association, 1989)
      This paper presents a method for combining image synthesis and modeling based on a finite element method (FEM) to get realistic intelligent images. FEM is used for modeling both elastically and plastically deformations of ...
    • THE USE OF GRAPHICAL SYMBOLIC COMMANDS (ICONS) IN APPLICATION PROGRAMS 

      Woodgate, H. Sam (The Eurographics Association, 1985)
      This paper describes the use of Graphical Symbols (Icons) as a means of communicating operating commands between application program and users. detailed in the paper is the operational command system for a "Spread Sheet ...
    • THE USE OF STANDARD GRAPHICS SOFTWARE IN THE STARLINK IMAGE PROCESSING FACILITY 

      J.R.Gallop, (The Eurographics Association, 1981)
      Starlink is a network of powerful interactive minicomputers, for use by astronomers in the UK; these computers run common software distributed from a central node. The use of standard general purpose graphics software in ...