Tutorials

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    The modelling of growing natural forms
    (Eurographics Association, 2000) Jones, Huw; Kaandorp, Jaap
    The tutorial introduces a variety of ways of modelling branching biological structures. Methods for generating plant like images, such as Diffusion Limited Aggregation and Iterated Function Systems are briefly discussed. The main concentration is on two methods that can be used to model the growth of such structures. The powerful Lsystems method gains explanatory power by use of parameters, context and environmental sensitivity, enabling natural features such as leaf drop, self-pruning and self-seeding. The method of Kaandorp for modelling marine sessile organisms such as sponges and corals, in which geometric features are “grown” directly, is compared for veracity with observed organisms in different physical environments.
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    Framework Technologies and Methods for Large Data Visualization
    (Eurographics Association, 2000) Hewitt, W. T.; Curington,Ian
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    Geometric Modeling Based on Polygonal Meshesv
    (Eurographics Association, 2000) Kobbelt, Leif P.; Bischoff, Stephan; Botsch, Mario; Kähler, Kolja; Rössl, Christian; Schneider, Robert; Vorsatz, Jens
    While traditional computer aided design (CAD) is mainly based on piecewise polynomial surface representations, the recent advances in the efficient handling of polygonal meshes have made available a set of powerful techniques which enable sophisticated modeling operations on freeform shapes. In this tutorial we are going to give a detailed introduction into the various techniques that have been proposed over the last years. Those techniques address important issues such as surface generation from discrete samples (e.g. laser scans) or from control meshes (ab initio design); complexity control by adjusting the level of detail of a given 3D-model to the current application or to the available hardware resources; advanced mesh optimization techniques that are based on the numerical simulation of physical material (e.g. membranes or thin plates) and finally the generation and modification of hierarchical representations which enable sophisticated multiresolution modeling functionality.
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    Interactive 3D Rendering and Visualization in Networked Environments
    (Eurographics Association, 2000) Martin, Ioana M.; Klosowski, James T.; Horn, William P.
    Efficient delivery of 3D graphics over networks is becoming increasingly important for a number of applications, ranging from industrial design and manufacturing to entertainment. As companiesmake the transition from a conventional business model to an e-business model, the number of users that require access to 3D model databases is forecast to grow dramatically over the next few years.While some usersmay access these databases using highperformance graphics hardware over high-speed connections, others are likely to access the data with devices having limited hardware graphics support over slower connections such as busy intranets, dial-in networks, or wireless connections. In this context, there is a requirement for efficiency. This translates into ensuring that access to centralized data is provided through a unified interface cognizant of the environment conditions and capable of transparently adjusting the access mechanism in order to provide the clients with optimal access service. In this course, attendees will learn to leverage existing methods for data transfer and interactive graphics to create the next generation of 3D networked graphics software tools.
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    Volume Visualization and Volume Rendering Techniques
    (Eurographics Association, 2000) Meißner, M.; Pfister, H.; Westermann, R.; Wittenbrink, C.M.
    There is a wide range of devices and scientific simulation generating volumetric data. Visualizing such data, ranging from regular data sets to scattered data, is a challenging task. This course will give an introduction to the volume rendering transport theory and the involved issues such as interpolation, illumination, classification and others. Different volume rendering techniques will be presented illustrating their fundamental features and differences as well as their limitations. Furthermore, acceleration techniques will be presented including pure software optimizations as well as utilizing special purpose hardware as VolumePro but also dedicated hardware such as polygon graphics subsystems.
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    Dealing with Shape Complexity for Internet Access and Graphic Applications
    (Eurographics Association, 2000) Rossignac, Jarek
    Standard representations of 3D models are so verbose that only very simple models can be accessed over common communication links for immediate viewing. This situation is not likely to improve, since the need for more accurate 3D models and their deployment throughout a broader spectrum of industrial, scientific, and consumer application areas will outpace the improvements in transmission bandwidth to the office, home, or mobile worker or private user. Recently developed multi-resolution modeling technologies play an important role in addressing this bandwidth bottleneck, especially when combined with other approaches, such as intelligent culling, pre-fetching, and image-based rendering. This tutorial will discuss the details of compression, simplification, and progressive transmission techniques and of their interrelations.