Now showing items 10021-10040 of 16434

    • An Operator Approach to Tangent Vector Field Processing 

      Azencot, Omri; Ben-Chen, Mirela; Chazal, Frédéric; Ovsjanikov, Maks (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      In this paper, we introduce a novel coordinate-free method for manipulating and analyzing vector fields on discrete surfaces. Unlike the commonly used representations of a vector field as an assignment of vectors to the ...
    • Operator Representations in Geometry Processing 

      Azencot, Omri (2017)
      This thesis introduces fundamental equations as well as discrete tools and numerical methods for carrying out various geometrical tasks on three-dimensional surfaces via operators. An example for an operator is the Laplacian ...
    • OphthalVis - Making Data Analytics of Optical Coherence Tomography Reproducible 

      Rosenthal, Paul; Ritter, Marc; Kowerko, Danny; Heine, Christian (The Eurographics Association, 2016)
      In this paper, we discuss the issues of the current state of the art in optical coherence tomography with respect to reproducibility. We present our findings about the internal computations and data storage methods of the ...
    • Opportunistic Music 

      Hachet, Martin; Kian, Arash; Berthaut, Florent; Franco, Jean-Sébastien; Desainte-Catherine, Myriam (The Eurographics Association, 2009)
      While mixed reality has inspired the development of many new musical instruments, few approaches explore the potential of mobile setups. We present a new musical interaction concept, called opportunistic music. It allows ...
    • 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 ...
    • Optical Image Processing Using Light Modulation Displays 

      Wetzstein, Gordon; Heidrich, Wolfgang; Luebke, David (The Eurographics Association and Blackwell Publishing Ltd, 2010)
      We propose to enhance the capabilities of the human visual system by performing optical image processing directly on an observed scene. Unlike previous work which additively superimposes imagery on a scene, or completely ...
    • Optical Magic Lenses and Polarization-Based Interaction Techniques 

      Waldner, Manuela; Kalkusch, Michael; Schmalstieg, Dieter (The Eurographics Association, 2007)
      In this paper we present a novel approach of the magic lens user interface metaphor for large-scale projectorbased displays. We altered a standard polarization-based passive stereo projection setup and employed a standard ...
    • Optical Tracking - From User Motion To 3D Interaction 

      Dorfmüller- Ulhaas, Klaus (Dorfmüller - Ulhaas, Dec 2002)
      Das Verfolgen von Benutzerbewegungen ist eine der grundlegenden Aufgaben, die von jedem System für Virtual Reality (VR) bereitgestellt werden muß. Es sind unterschiedliche Methoden bekannt, wie diese Verfolgung ...
    • Optical Tracking and Calibration of Tangible Interaction Devices 

      Rhijn, Arjen van; Mulder, Jurriaan D. (The Eurographics Association, 2005)
      In this paper, a novel optical tracking and object calibration system is presented for the recognition and pose estimation of tangible interaction devices for virtual and augmented reality systems. The calibration system ...
    • Optical Tracking using Line Pencil Fiducials 

      Rhijn, Arjen van; Mulder, Jurriaan D. (The Eurographics Association, 2004)
      In this paper, a new pattern based optical tracking method is presented for the recognition and pose estimation of input devices for virtual or augmented reality environments. The method is based on pencils of linefiducials, ...
    • Optimal Automatic Multi-pass Shader Partitioning by Dynamic Programming 

      Heirich, Alan (The Eurographics Association, 2005)
      Complex shaders must be partitioned into multiple passes to execute on GPUs with limited hardware resources. Automatic partitioning gives rise to an NP-hard scheduling problem that can be solved by any number of established ...
    • Optimal Axes for Data Value Estimation in Star Coordinates and Radial Axes Plots 

      Rubio-Sánchez, Manuel; Lehmann, Dirk J.; Sanchez, Alberto; Rojo-Álvarez, Jose Luis (The Eurographics Association and John Wiley & Sons Ltd., 2021)
      Radial axes plots are projection methods that represent high-dimensional data samples as points on a two-dimensional plane. These techniques define mappings through a set of axis vectors, each associated with a data variable, ...
    • An Optimal Control Approach for Texture Metamorphosis 

      Kabul, Ilknur; Pizer, Stephen M.; Rosenman, Julian; Niethammer, Marc (The Eurographics Association and Blackwell Publishing Ltd., 2011)
      In this paper, we introduce a new texture metamorphosis approach for interpolating texture samples from a source texture into a target texture. We use a new energy optimization scheme derived from optimal control principles ...
    • Optimal Depth Buffer for Low-Cost Graphics Hardware 

      Lapidous, Eugene; Jiao, Guofang (The Eurographics Association, 1999)
      3D applications using hardware depth buffers for visibility testing are confronted with multiple choices of buffer types, sizes and formats. Some of the options are not exposed through 3D API or may be used by the driver ...
    • Optimal Deterministic Mixture Sampling 

      Sbert, Mateu; Havran, Vlastimil; Szirmay-Kalos, László (The Eurographics Association, 2019)
      Multiple Importance Sampling (MIS) can combine several sampling techniques preserving their advantages. For example, we can consider different Monte Carlo rendering methods generating light path samples proportionally only ...
    • Optimal Multi-Image Processing Streaming Framework on Parallel Heterogeneous Systems 

      Ha, Linh K.; Krüger, Jens; Comba, Joao; Joshi, Sarang; Silva, Cláudio T. (The Eurographics Association, 2011)
      Atlas construction is an important technique in medical image analysis that plays a central role in understanding the variability of brain anatomy. The construction often requires applying image processing operations to ...
    • Optimal Sample Weights for Hemispherical Integral Quadratures 

      Marques, Ricardo; Bouville, Christian; Bouatouch, Kadi (© 2019 The Eurographics Association and John Wiley & Sons Ltd., 2019)
      This paper proposes optimal quadrature rules over the hemisphere for the shading integral. We leverage recent work regarding the theory of quadrature rules over the sphere in order to derive a new theoretical framework for ...
    • Optimal Software-based Projector Alignment 

      Baier, Pablo A. S.; Carvalho, Paulo C. P. (The Eurographics Association, 2022)
      We present a software-based method for alignment of projectors, both for side-by-side (mosaic) and stereo projections. The projectors are assumed to be positioned in such a way that their axes are not perpendicular to the ...
    • Optimal Source Selection in Shooting Random Walk Monte Carlo Radiosity 

      Sbert, Mateu (Blackwell Publishers Ltd and the Eurographics Association, 1997)
      In this paper we study how to optimally select between different sources in shooting random walk Monte Carlo Radiosity. Until now the probability of selecting a source has been made proportional to the importance of that ...
    • Optimal Spatial Registration of SLAM for Augmented Reality 

      Wientapper, Folker (2019-03-15)
      Augmented reality (AR) is a paradigm that aims at fusing the perceived real environment of a human with digital information located in 3D space. Typically, virtual 3D graphics are overlayed into the captured images of a ...