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Designing Semantic Game Worlds 12

Designing Semantic Game Worlds

引用

Proceedings of the The third workshop on Procedural Content Generation in Games

作者： Jassin Kessing Tim Tutenel Rafael Bidarra Computer Graphics and Visualization Group Delft University of Technology Mekelweg 4 2628 CD Delft The Netherlands

ISBN: (纸本)9781450314473

Current game worlds often fall short in providing consistency between the visual representation of the world and the way it feels, behaves, and reacts. This problem partly originates from the goal-oriented and cost-effective nature of the game development process, which mostly favors ad hoc solutions for one particular game, rather than investing in concepts like reusability and emergent gameplay. In broader terms, we observe that game worlds miss semantics, and we argue that its deployment has the potential to bring about the consistency missing in their content. Therefore, we present a novel approach aimed at enriching virtual entities in game worlds with information about their roles, how they relate to others, and how they can affect and interact with players, NPCs, and with each other. We discuss several requirements to achieve these goals, and introduce a semantic model to represent game worlds. In order to support and validate this model, we have developed Entika, a framework to facilitate the deployment of semantics during game development, as well as its maintenance during run-time. Furthermore, we briefly discuss several applications that demonstrate the power of this semantic model for game worlds. After careful evaluation of our semantic game world model and framework, we conclude that a semantically rich world representation can substantially assist designers in creating much more consistent game worlds.

关键词： object interaction semantics game worlds

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IEEE Symposium on Biological Data visualization (BioVis)

作者： Jens Fangerau Burkhard Höckendorf Joachim Wittbrodt Heike Leitte Computer Graphics and Visualization Heidelberg University Germany Centre for Organismal Studies (COS) Heidelberg University Germany

Modern 3D+T video microscopy techniques enable biologists to acquire data of living organisms with unprecedented resolution in time and space. These datasets contain a wealth of biologically relevant and quantifiable information, e.g. the movements of all individual cells in a complex organism. However, extraction, validation, and analysis of this information are both challenging and time-consuming. In this paper, we present a computational technique that classifies and validates similar patterns of cell movements and cell divisions in organisms that consist of up to thousands of cells. Our algorithm determines tracking paths of traced cells that exhibit similar features and shape structures. These similarity values are assigned to our cluster algorithm that clusters paths into groups of coherent behavior. The data can be interactively explored in 2D projections and a 3D cell movement representation. For the first time, this visualization allows biologists to exhaustively assess similarities and differences in division patterns and cell migration on the scale of an entire organism. For validation, we applied our method on a synthetic dataset and two real datasets including zebrafish periods from blastula stage to early epiboly and growing zebrafish tail. We show that our method succeeds in detecting similarities based on shape and cell-movement based features.

关键词： Trajectory Data visualization Shape Vectors Embryo Couplings

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Interactive quality inspection of measured deviations in sheet metal assemblies 2

Interactive quality inspection of measured deviations in she...

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2nd International Conference of the DFG International Research Training Group 2057 - Physical Modeling for Virtual Manufacturing, iPMVM 2020

作者： Claus, Felix Hagen, Hans Leonhardt, Viktor Leitte, Heike Hamann, Bernd Computer Graphics and HCI Lab Computer Science Department Technische Universität Kaiserslautern Germany Scientific Visualization Lab Computer Science Department Technische Universität Kaiserslautern Germany Visual Information Analysis Computer Science Department Technische Universität Kaiserslautern Germany Department of Computer Science University of California DavisCA95616 United States

ISBN: (纸本)9783959771832

We present an exploratory data analysis approach for finite element (FE) simulations to interactively inspect measured deviations in sheet metals arising in automotive applications. Exterior car body parts consist of large visible surfaces, and strict tolerances must be met by them to satisfy both aesthetic requirements and quality performance requirements. To fulfill quality requirements like gap and flushness, exterior vehicle components have adjustable mechanical boundaries. These boundaries are used to influence the shape and position of a sheet metal part relative to its chassis. We introduce a method that supports an inspection engineer with an interactive framework that makes possible a detailed analysis of measured sheet metal deviation fields generated from 3D scans. An engineer can interactively change boundary conditions and obtains the resulting deviation field in real-time. Thus, it is possible to determine viable and desirable adjustments efficiently, leading to time and cost savings in the assembly process. © Felix Claus, Hans Hagen, Viktor Leonhardt, Heike Leitte, and Bernd Hamann.

关键词： Inspection

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Implicit Surface Modeling Suitable for Inside/Outside Tests with Radial Basis Functions

Implicit Surface Modeling Suitable for Inside/Outside Tests ...

引用

2007 10th IEEE International Conferences on computer Aided Design and computer graphics(CAD/graphics 2007)

作者： Vaclav Skala Centre of Computer Graphics and Data Visualization Department of Computer Science and EngineeringUniversity of West BohemiaPlzenCzech Republic30614

We describe a method for computing an implicit function that represents a surface by its zero level set,given a set of points scattered over the surface and associated with surface normal *** implicit function is defined as a linear combination of compactly supported radial basis *** method is suitable for testing whether a given point is interior or exterior to the surface,previously only associated with globally supported or globally regularized radial basis *** use a two-level interpolation *** the coarse scale interpolation,we set basis function centers by a grid that covers the enlarged bounding box of the given point set and compute their signed distances to the underlying surface using local quadratic approximations of the nearest surface *** a fitting to the residual errors on the surface points and additional off-surface points is performed with fine scale basis *** final function is the sum of the two intermediate functions and is a good approximation of the signed distance field to the surface in the bounding *** of surface reconstruction and set operations between shapes are provided.

关键词： Implicit Surface Modeling Suitable for Inside/Outside Tests with Radial Basis Functions

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Computational steering for patient-specific implant planning in orthopedics

Computational steering for patient-specific implant planning...

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1st Eurographics Workshop on Visual Computing and Biomedicine, EG VCBM 2008

作者： Dick, Christian Georgii, Joachim Burgkart, Rainer Westermann, Rüdiger Computer Graphics and Visualization Group Technische Universität München Germany Klinik u. Poliklinik für Orthopädie Sportorthopädie Klinikum Rechts der Isar Technische Universität München Germany

ISBN: (纸本)9783905674132

Fast and reliable methods for predicting and monitoring in-vivo bone strength are of great importance for hip joint replacement. To avoid adaptive remodeling with cortical thinning and increased porosity of the bone due to stress shielding, in a preoperative planning process the optimal implant design, size, and position has to be determined. This process involves interactive implant positioning within the bone as well as simulation and visualization of the stress within bone and implant due to exerting forces. In this paper, we present a prototype of such a visual analysis tool, which, to our best knowledge, provides the first computational steering environment for optimal implant selection and positioning. This prototype considers patient-specific biomechanical properties of the bone to select the optimal implant design, size, and position according to the prediction of individual load transfer from the implant to the bone. We have developed a fast and stable multigrid finite-element solver for hexahedral elements, which enables interactive simulation of the stress distribution within the bone and the implant. By utilizing a real-time GPU-method to detect elements that are covered by the moving implant, we can automatically generate computational models from patient-specific CT scans in real-time, and we can instantly feed these models into the simulation process. Hardware-accelerated volume ray-casting, which is extended by a new method to accurately visualize sub-hexahedron implant boundaries, provides a new quality of orthopedic surgery planning. © The Eurographics Association 2008.

关键词： Bone

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A model for the visualization exploration process

A model for the visualization exploration process

引用

VIS 2002, IEEE Visualisation 2002

作者： Jankun-Kelly, T.J. Ma, Kwan-Liu Gertz, Michael Visualization and Graphics Res. Grp. Center for IPIC University of California Davis CA 95616 United States Database and Information Syst. Group Computer Science Department University of California Davis CA 95616 United States

The current state of the art in visualization research places a strong emphasis on different techniques to derive insight from disparate types of data. However, little work has investigated the visualization process itself. The information content of the visualization process-the results, history, and relationships between those results-is addressed by this work. A characterization of the visualization process is discussed, leading to a general model of the visualization exploration process. The model, based upon a new parameter derivation calculus, can be used for automated reporting, analysis, or visualized directly. An XML-based language for expressing visualization sessions using the model is also described. These sessions can then be shared and reused by collaborators. The model, along with the XML representation, provides an effective means to utilize the information within the visualization process to further data exploration.

关键词： visualization

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Smart 3D visualizations in clinical applications

引用

3rd International Symposium on Smart graphics, SG 2003

作者： Preim, Bernhard Peitgen, Heinz-Otto Institute for Simulation and Graphics Department for Computer Science Otto-von-Guericke-University of Magdeburg Universitaetsplatz 2 Magdeburg39106 Germany Center for Medical Diagnosic Systems and Visualization Universitaetsallee 29 Bremen28359 Germany

ISBN: (纸本)3540405577

We discuss techniques for the visualization of medical volume data dedicated for their clinical use. We describe the need for rapid dynamic interaction facilities with such visualizations and discuss emphasis techniques in more detail. Another crucial aspect of medical visualization is the integration of 2d and 3d visualizations. In order to organize this discussion, we introduce 6 „Golden"rules for medical visualizations. © Springer-Verlag Berlin Heidelberg 2003.

关键词： visualization

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Interactive Physics-Based Deformation for Virtual Worlds

Interactive Physics-Based Deformation for Virtual Worlds

引用

International Conference on Cyberworlds

作者： Andreas Riffnaller-Schiefer Ursula H. Augsdörfer Dieter W. Fellner Institute of Computer Graphics and Knowledge Visualization Graz University of Technology Austria Fraunhofer IGD TU Darmstadt Germany

When creating immersive interactive virtual worlds, it is important to not only provide plausible visuals, but also to allow the user to interact with the virtual scene in a natural way. While rigid-body physics simulations are widely used to provide basic interaction, realistic soft-body deformations of virtual objects are challenging and therefore typically not *** present a client-server architecture for interactive physics-based deformation, which makes it possible to add physically accurate response to interaction to any virtual environment. The architecture is highly flexible, can be used from any web enabled client, and facilitates synchronization of computed deformations across multiple users and devices.

关键词： Computational modeling Mathematical model Solid modeling Strain Geometry computer architecture Servers

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Animating horse gaits and transitions

Animating horse gaits and transitions

引用

8th Theory and Practice of computer graphics Conference, TPCG 2010

作者： Murphy, J.E. Carr, H. O'Neill, M. Imaging Visualisation and Graphics Group School of Computer Science and Informatics University College Dublin Ireland Visualization and Virtual Reality Group School of Computing University of Leeds United Kingdom Natural Computing Research and Applications Group School of Computer Science and Informatics University College Dublin Ireland

ISBN: (纸本)9783905673753

Animations of horses are commonly used for entertainment purposes. A realistic animated model must move with a gait appropriate to its velocity. We present a kinematic animation system in which a horse model moves using gaits and transitions based on predictions from Dynamic Similarity theory. A Genetic Programming technique is used to evolve gait motion with dynamically adjustable limb extent. The system is controlled in real-time using a MIDI controller system based around the model's Froude number. We were successful in producing high quality animations of the horse's natural gaits and transitions. © The Eurographics Association 2010.

关键词： Genetic algorithms

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An interface for sketching 3D curves 99

An interface for sketching 3D curves

引用

Proceedings of the 1999 symposium on Interactive 3D graphics

作者： Jonathan M. Cohen Lee Markosian Robert C. Zeleznik John F. Hughes Ronen Barzel Brown University Site of the NSF Science and Technology Center for Computer Graphics and Scientific Visualization Providence RI PIXAR

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