Browsing Volume 23 (2004) by Issue Date

Now showing items 21-40 of 93

    • Second Annual Symposium on Computer Animation (SCA 2003) 

      SCA 2003 Chairs (The Eurographics Association and Blackwell Publishing Ltd., 2004)

    • Immersive Integration of Physical and Virtual Environments 

      Fuchs, Henry (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      We envision future work and play environments in which the user's computing interface is more closely integrated with the physical surroundings than today's conventional computer display screens and keyboards.We are working ...

    • Image-based Relighting, and Computer Vision 

      Dutre, Philip (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      Image-based techniques have become very popular over the past couple of years. Ranging from modeling to rendering and lighting, the use of images as direct input for graphics algorithms has become as important as processing ...

    • Fast Multipath Radiosity using Hierarchical Subscenes 

      Castro, F.; Sbert, M.; Neumann, L. (The Eurographics Association and Blackwell Publishing Ltd., 2004)
      This paper presents an efficient acceleration technique for the global line radiosity Multipath method. In this approach, the scene is subdivided in a hierarchy of box bounded subscenes, the boxes subdivided in a grid of ...

    • Implicit Fitting Using Radial Basis Functions with Ellipsoid Constraint 

      Li, Q.; Wills, D.; Phillips, R.; Viant, W. J.; Griffiths, J. G.; Ward, J. (The Eurographics Association and Blackwell Publishing Ltd., 2004)
      Implicit planar curve and surface fitting to a set of scattered points plays an important role in solving a wide variety of problems occurring in computer graphics modelling, computer graphics animation, and computer ...

    • Eurographics Symposium on Rendering 2003 

      Lagae, Ares; Masselus, Vincent; Dutre, Philip (The Eurographics Association and Blackwell Publishing Ltd., 2004)

    • An Eye Gaze Model for Dyadic Interaction in an Immersive Virtual Environment: Practice and Experience 

      Vinayagamoorthy, V.; Garau, M.; Steed, A.; Slater, M. (The Eurographics Association and Blackwell Publishing Ltd., 2004)
      This paper describes a behavioural model used to simulate realistic eye-gaze behaviour and body animations for avatars representing participants in a shared immersive virtual environment (IVE). The model was used in a study ...

    • Interference Detection for Subdivision Surfaces 

      Wu, Xiaobin; Peters, Joerg (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      Accurate and robust interference detection and ray-tracing of subdivision surfaces requires safe linear approximations. Approximation of the limit surface by the subdivided control polyhedron can be both inaccurate and, ...

    • High Resolution Acquisition, Learning and Transfer of Dynamic 3-D Facial Expressions 

      Wang, Yang; Huang, Xiaolei; Lee, Chan-Su; Zhang, Song; Li, Zhiguo; Samaras, Dimitris; Metaxas, Dimitris; Elgammal, Ahmed; Huang, Peisen (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      Synthesis and re-targeting of facial expressions is central to facial animation and often involves significant manual work in order to achieve realistic expressions, due to the difficulty of capturing high quality dynamic ...

    • Optimized Sub-Sampling of Point Sets for Surface Splatting 

      Wu, Jainhua; Kobbelt, Leif (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      Using surface splats as a rendering primitive has gained increasing attention recently due to its potential for high-performance and high-quality rendering of complex geometric models. However, as with any other rendering ...

    • VOTS: VOlume doTS as a Point-Based Representation of Volumetric Data 

      Grimm, Soeren; Bruckner, Stefan; Kanitsar, Armin; Groeller, Eduard (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      We present Volume dots (Vots), a new primitive for volumetric data modelling, processing, and rendering. Vots are a point-based representation of volumetric data. An individual Vot is specified by the coefficients of a ...

    • Hierarchical Retargetting of Fine Facial Motions 

      Na, Kyunggun; Jung, Moonryul (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      We present a novel technique for retargetting captured facial animation to new facial models. We use dense motion data that can express fine motions such as wrinkles. We use a normal mesh, which is a special multi-resolution ...

    • Balancing Considered Harmful - Faster Photon Mapping using the Voxel Volume Heuristic - 

      Wald, Ingo; Guenther, Johannes; Slusallek, Philipp (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      Photon mapping is one of the most important algorithms for computing global illumination. Especially for efficiently producing convincing caustics, there are no real alternatives to photon mapping. On the other hand, photon ...

    • Coherent Hierarchical Culling: Hardware Occlusion Queries Made Useful 

      Bittner, Jiri; Wimmer, Michael; Piringer, Harald; Purgathofer, Werner (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      We present a simple but powerful algorithm for optimizing the usage of hardware occlusion queries in arbitrary complex scenes. Our method minimizes the number of issued queries and reduces the delays due to the latency of ...

    • GPU-Based Nonlinear Ray Tracing 

      Weiskopf, Daniel; Schafhitzel, Tobias; Ertl, Thomas (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      In this paper, we present a mapping of nonlinear ray tracing to the GPU which avoids any data transfer back to main memory. The rendering process consists of the following parts: ray setup according to the camera parameters, ...

    • A Progressive Rendering Algorithm Using an Adaptive Perceptually Based Image Metric 

      Farrugia, Jean-Philippe; Peroche, Bernard (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      In this paper, we propose to solve the global illumination problem through a progressive rendering method relying on an adaptive sampling of the image space. The refinement of this sample scheme is driven by an image metric ...

    • Hardware-Accelerated Rendering of Photo Hulls 

      Li, Ming; Magnor, Marcus; Seidel, Hans-Peter (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      This paper presents an efficient hardware-accelerated method for novel view synthesis from a set of images or videos. Our method is based on the photo hull representation, which is the maximal photo-consistent shape. We ...

    • Deferred Splatting 

      Guennebaud, Gael; Barthe, Loic; Paulin, Mathias (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      In recent years it has been shown that, above a certain complexity, points become the most efficient rendering primitives. Although the programmability of the lastest graphics hardware allows efficient implementation of ...

    • Exchanging Faces in Images 

      Blanz, Volker; Scherbaum, Kristina; Vetter, Thomas; Seidel, Hans-Peter (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      Pasting somebody's face into an existing image with traditional photo retouching and digital image processing tools has only been possible if both images show the face from the same viewpoint and with the same illumination. ...

    • Combined Correlated and Importance Sampling in Direct Light Source Computation and Environment Mapping 

      Szecsi, Laszlo; Sbert, Mateu; Szirmay-Kalos, Laszlo (The Eurographics Association and Blackwell Publishing, Inc, 2004)
      This paper presents a general variance reduction method that is a quasi-optimal combination of correlated and importance sampling. The weights of the combination are selected automatically in order to keep the merits of ...