Volume 32 (2013): Recent submissions

Now showing items 121-140 of 255

    • Exponential Soft Shadow Mapping 

      Shen, Li; Feng, Jieqing; Yang, Baoguang (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      In this paper we present an image-based algorithm to render visually plausible anti-aliased soft shadows in real time. Our technique employs a new shadow pre-filtering method based on an extended exponential shadow mapping ...

    • Temporally Coherent Adaptive Sampling for Imperfect Shadow Maps 

      Barák, Tomas; Bittner, Jiri; Havran, Vlastimil (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We propose a new adaptive algorithm for determining virtual point lights (VPL) in the scope of real-time instant radiosity methods, which use a limited number of VPLs. The proposed method is based on Metropolis-Hastings ...

    • Line-Sweep Ambient Obscurance 

      Timonen, Ville (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Screen-space ambient occlusion and obscurance have become established methods for rendering global illumi- nation effects in real-time applications. While they have seen a steady line of refinements, their computational ...

    • A Shape-Aware Model for Discrete Texture Synthesis 

      Landes, Pierre-Edouard; Galerne, Bruno; Hurtut, Thomas (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present a novel shape-aware method for synthesizing 2D and 3D discrete element textures consisting of collections of distinct vector graphics objects. Extending the long-proven point process framework, we propose a shape ...

    • A Topological Approach to Voxelization 

      Laine, Samuli (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present a novel approach to voxelization, based on intersecting the input primitives against intersection targets in the voxel grid. Instead of relying on geometric proximity measures, our approach is topological in ...

    • An Area-Preserving Parametrization for Spherical Rectangles 

      Ureña, Carlos; Fajardo, Marcos; King, Alan (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present an area-preserving parametrization for spherical rectangles which is an analytical function with domain in the unit rectangle [0;1]2 and range in a region included in the unit-radius sphere. The parametrization ...

    • Spherical Visibility Sampling 

      Eikel, Benjamin; Jähn, Claudius; Fischer, Matthias; Heide, Friedhelm Meyer auf der (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Many 3D scenes (e.g. generated from CAD data) are composed of a multitude of objects that are nested in each other. A showroom, for instance, may contain multiple cars and every car has a gearbox with many gearwheels located ...

    • Probabilistic Visibility Evaluation for Direct Illumination 

      Billen, Niels; Engelen, Björn; Lagae, Ares; Dutré, Philip (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      The efficient evaluation of visibility in a three-dimensional scene is a longstanding problem in computer graphics. Visibility evaluations come in many different forms: figuring out what object is visible in a pixel; ...

    • Photon Beam Diffusion: A Hybrid Monte Carlo Method for Subsurface Scattering 

      Habel, Ralf; Christensen, Per H.; Jarosz, Wojciech (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present photon beam diffusion, an efficient numerical method for accurately rendering translucent materials. Our approach interprets incident light as a continuous beam of photons inside the material. Numerically ...

    • Automatic Cinemagraph Portraits 

      Bai, Jiamin; Agarwala, Aseem; Agrawala, Maneesh; Ramamoorthi, Ravi (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Cinemagraphs are a popular new type of visual media that lie in-between photos and video; some parts of the frame are animated and loop seamlessly, while other parts of the frame remain completely still. Cinemagraphs are ...

    • Computational Simulation of Alternative Photographic Processes 

      Echevarria, Jose I.; Wilensky, Gregg; Krishnaswamy, Aravind; Kim, Byungmoon; Gutierrez, Diego (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present a novel computational framework for physically and chemically-based simulations of analog alternative photographic processes. In the real world, these processes allow the creation of very personal and unique ...

    • Practical Real-Time Lens-Flare Rendering 

      Lee, Sungkil; Eisemann, Elmar (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present a practical real-time approach for rendering lens-flare effects. While previous work employed costly ray tracing or complex polynomial expressions, we present a coarser, but also significantly faster solution. ...

    • Preface and Table of Contents 

      Nicolas Holzschuch and Szymon Rusinkiewicz (The Eurographics Association and Blackwell Publishing Ltd., 2013)

    • Interactive Ray Casting of Geodesic Grids 

      Xie, Jinrong; Yu, Hongfeng; Ma, Kwan-Liu (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Geodesic grids are commonly used to model the surface of a sphere and are widely applied in numerical simulations of geoscience applications. These applications range from biodiversity, to climate change and to ocean ...

    • Synthetic Brainbows 

      Wan, Yong; Otsuna, Hideo; Hansen, Charles (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Brainbow is a genetic engineering technique that randomly colorizes cells. Biological samples processed with this technique and imaged with confocal microscopy have distinctive colors for individual cells. Complex cellular ...

    • TrajectoryLenses - A Set-based Filtering and Exploration Technique for Long-term Trajectory Data 

      Krüger, Robert; Thom, Dennis; Wörner, Michael; Bosch, Harald; Ertl, Thomas (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      The visual analysis of spatiotemporal movement is a challenging task. There may be millions of routes of different length and shape with different origin and destination, extending over a long time span. Furthermore there ...

    • ViviSection: Skeleton-based Volume Editing 

      Karimov, Alexey; Mistelbauer, Gabriel; Schmidt, Johanna; Mindek, Peter; Schmidt, Elisabeth; Sharipov, Timur; Bruckner, Stefan; Gröller, Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Volume segmentation is important in many applications, particularly in the medical domain. Most segmentation techniques, however, work fully automatically only in very restricted scenarios and cumbersome manual editing of ...

    • ExPlates: Spatializing Interactive Analysis to Scaffold Visual Exploration 

      Javed, Waqas; Elmqvist, Niklas (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Visual exploration involves using visual representations to investigate data where the goals of the process are unclear and poorly defined. However, this often places unduly high cognitive load on the user, particularly ...

    • Visual Explanation of the Complexity in Julia Sets 

      Schrijvers, Okke; Wijk, Jarke J. van (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Julia sets based on quadratic polynomials have a very simple definition, yet a highly intricate shape. Our contribution is to provide a visual explanation for this complexity. To this end we show the construction of Julia ...

    • imMens: Real-time Visual Querying of Big Data 

      Liu, Zhicheng; Jiang, Biye; Heer, Jeffrey (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Data analysts must make sense of increasingly large data sets, sometimes with billions or more records.We present methods for interactive visualization of big data, following the principle that perceptual and interactive ...