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Item Point Based Computer Graphics(Eurographics Association, 2002) Gross, Markus; Pfister, Hanspeter; Zwicker, Matthias; Pauly, Mark; Stamminger, Marc; Alexa, Marc-Item View-Dependent Rendering for Polygonal Datasets(Eurographics Association, 2002) El- Sana, Jihad; De Floriani, Leila; Puppo, Enrico; Shamir, Arik-Item 3D Data Acquisition(Eurographics Association, 2002) Scopigno,Roberto; Andujar, Carlos; Goesele,Michael; Lensch, Hendrik P. A.3D scanners and image acquisition systems are rapidly becoming more affordable and allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. This tutorial will present the potential of this technology, review the state of the art in model acquisition methods, and will discuss the 3D acquisition pipeline from physical acquisition until the final digital model. First, different scanning techniques such as time-of-flight or structured light approaches will briefly be presented. Other acquisition related issues including the design of the scanning studio will be discussed and evaluated. In the area of registration, we will consider both the problems of initially aligning individual scans, and of refining this alignment with variations of the Iterative Closest Point method. For scan integration and mesh reconstruction, we will compare various methods for computing interpolating and approximating surfaces. We will then look at various ways in which surface properties such as color and reflectance can be extracted from acquired imagery. Finally, we will examine techniques for the efficient management and rendering of very large, attribute-rich meshes, including methods for the construction of simplified triangle-based representation and sample-based rendering approaches.Item Cloth Animation and Rendering(Eurographics Association, 2002) Hauth, Michael; Etzmuss, Olaf; Eberhardt, Bernd; Klein, Reinhard; Sarlette, Ralf; Sattler, Mirko; Daubert, Katja; Kautz, JanThe area of physically-based modeling is situated in the intersection of computer science, mathematics, and physics. The animation of cloth is a particularly interesting application of physically-based modeling, because it aims at fast animation solutions for rather difficult physical problems. Moreover, it addresses one of the major difficulties in creating realistic scenes with virtual actors. The challenge of computer animation is to break down physical models for complex structures as textiles, approximate them efficiently, and run fast simulations with intelligent numerical methods. Furthermore, interactivity and collisions with other objects in the scene are challenges that have motivated much creative work over the recent years. The range of methods proposed in literature is quite large. The techniques vary from simplified methods designed for real-time applications to sophisticated methods that were designed to reproduce measured material properties. Rendering cloth is especially difficult because of its complex material properties. Software rendering can deal with these properties fairly easily, once they have been acquired, but remains too slow for interactive applications. Hardware accelerated rendering often provides a way to achieve interactive renderings, unfortunately complex materials aren’t directly supported. We will demonstrate how interactive rendering with complex materials can nonetheless be achievedItem Facial Modeling and Animation(Eurographics Association, 2002) Haber, Jörg; Magnenat-Thalmann, Nadia; Terzopoulos, Demetri; Vetter, Thomas; Blanz, Volker; Kähler, KoljaItem Modeling and Rendering of Synthetic Plants(Eurographics Association, 2002) Deussen, OliverPlant geometries: → important for many indoor and outdoor scenes → hard to generate and to manipulate → tricky to convert → today: seldomly used → tomorrow: standard of most animation systemsItem Geometric Data Structures for Computer Graphics(Eurographics Association, 2002) Zachmann, Gabriel; Langetepe, ElmarThis tutorial aims at presenting a wide range of geometric data structures, algorithms and techniques from computational geometry to computer graphics practitioners. To achieve this goal we introduce several data structures, discuss their complexity, point out construction schemes and the corresponding performance and present standard applications in two and three dimensions.Item More than RGB: Spectral Trends in Color Reproduction(Eurographics Association, 2002) Bell, Ian E.; Baranoski, Gladimir V. G.Early rendering algorithms relied exclusively on three-dimensional spaces for color computation, such as RGB and CIE XYZ. Recent rendering advances use full spectral information for illuminants and surfaces, resulting in much greater accuracy and realism. These expensive computations can be wasted, however, if ad hoc methods are used to adjust the final image on the monitor, in film, or in print. Ineficiency and inaccuracy can be avoided with some knowledge of device gamuts and color reproduction algorithms. This course follows spectral data through the graphics pipeline, examining issues of rendering, color science, perception, gamut mapping, and color management. We conclude with a discussion of trends and open problems in managing spectral data for accurate color reproduction. Participants will learn not only the theoretical background of color and spectral reproduction, but practical guidelines often omitted in technical papers.Item Programmable Graphics Hardware for Interactive Visualization(Eurographics Association, 2002) Ertl, Thomas; Weiskopf, Daniel; Kraus, Martin; Engel, Klaus; Weiler, Manfred; Hopf, Matthias; Röttger, Stefan; Rezk-Salama, Christof-Item Tutorial on Inhabited Virtual Heritage(Eurographics Association, 2002) Magnenat-Thalmann, Nadia; Chalmers, Alan; Fua, Pascal; Thalmann, Daniel-