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检索条件"机构=Institute of Computer Graphics and Visualization"

共 148 条记录，以下是61-70 订阅

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Development of distributed multimedia virtual environment with multichannel visualization of multimedia data by graphic accelerators 23

Development of distributed multimedia virtual environment wi...

引用

23rd International Conference on computer graphics and Vision, GraphiCon 2013

作者： Morozov, Boris B. Dolgovesov, Boris S. Mazurok, Boris S. Gorodilov, Mikhail A. Software Systems for Computer Graphics Laboratory Institute of Automation and Electrometry SB RAS Russia Synthesizing Visualization Systems Laboratory Institute of Automation and Electrometry SB RAS Russia Institute of Automation and Electrometry SB RAS Russia

ISBN: (纸本)9785804414024

An approach to the development of technical solutions for the creating of a real-time Distributed Multimedia Virtual Environment is described. The main objective of the environment - control the formation and delivery of multimedia content from multiple sources to multiple recipients. © 23rd International Conference on computer graphics and Vision, GraphiCon 2013 - Conference Proceedings. All rights reserved.

关键词： Virtual reality

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Graph-based combinations of fragment descriptors for improved 3D object retrieval 12

Graph-based combinations of fragment descriptors for improve...

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3rd ACM Multimedia Systems Conference, MMSys'12

作者： Schreck, Tobias Scherer, Maximilian Walter, Michael Bustos, Benjamin Yoon, Sang Min Kuijper, Arjan Data Analysis and Visualization Group University of Konstanz Germany Interactive Graphics Systems Technische Universität Darmstadt Germany KDW+PRISMA Department of Computer Science University of Chile Chile Yonsei Institute of Convergence Technology Yonsei University Korea Republic of Fraunhofer Institute for Computer Graphics Research Darmstadt Germany

ISBN: (纸本)9781450311311

3D Object Retrieval is an important field of research with many application possibilities. One of the main goals in this research is the development of discriminative methods for similarity search. The descriptor-based approach to date has seen a lot of research attention, with many different extraction algorithms proposed. In previous work, we have introduced a simple but effective scheme for 3D model retrieval based on a spatially fixed combination of 3D object fragment descriptors. In this work, we propose a novel flexible combination scheme based on finding the best matching fragment descriptors to use in the combination. By an exhaustive experimental evaluation on established benchmark data we show the capability of the new combination scheme to provide improved retrieval effectiveness. The method is proposed as a versatile and inexpensive method to enhance the effectiveness of a given global 3D descriptor approach. © 2012 ACM.

关键词： Self organizing maps

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Simulator sickness and presence in a high field-of-view virtual environment

Simulator sickness and presence in a high field-of-view virt...

引用

Conference on Human Factors in Computing Systems

作者： Seay, A. Fleming Krum, David M. Hodges, Larry Ribarsky, William Human Computer Interaction Institute Carnegie Mellon University Pittsburgh PA 15213 United States Graphics Visualization/Usability C. Georgia Institute of Technology Atlanta GA 30332-0170 United States

ISBN: (纸本)1581134541

The effect of field-of-view, display type and user role on the experience of simulator sickness and presence in users of a virtual environment was investigated. A PC based assessment instrument was created to administer the Presence, Immersive Tendencies and Simulator Sickness questionnaires. The field-of-view was found to be the major determinant of both simulator sickness and presence.

关键词： Virtual reality

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Interaction Analysis: An Algorithm for Interaction Prediction and Activity Recognition in Adaptive Systems

Interaction Analysis: An Algorithm for Interaction Predictio...

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2010 IEEE International Conference on Intelligent Computing and Intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

作者： Christian Stab Kawa Nazemi Dieter W.Fellner 3D Knowledge Worlds and Semantics Visualization Fraunhofer Institute for Computer Graphics Research 3D Knowledge Worlds and Semantics Visualization Fraunhofer Institute for Computer Graphics Research

Predictive statistical models are used in the area of adaptive user interfaces to model user behavior and to infer user information from interaction events in an implicit and non-intrusive way. This information constitutes the basis for tailoring the user interface to the needs of the individual user. Consequently, the user analysis process should model the user with information, which can be used in various systems to recognize user activities, intentions and roles to accomplish an adequate adaptation to the given user and his current task. In this paper we present the improved prediction algorithm KO*/19, which is able to recognize, beside interaction predictions, behavioral patterns for recognizing user activities. By means of this extension, the evaluation shows that the KO*/19Algorithm improves the Mean Prediction Rank more than 19％ compared to other well-established prediction algorithms.

关键词： Predictive Statistical Model Activity Recognition User Modeling Adaptive User Interfaces

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1 Course description

1 Course description

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ACM SIGGRAPH 2007 - International Conference on computer graphics and Interactive Techniques

作者： Kasik, Dave Gobbetti, Enrico Marton, Fabio Manocha, Dinesh Yoon, Sung-Eui Correa, Wagner Bruderlin, Beat Stephens, Abe Slusallek, Philipp Dietrich, Andreas Quilez, Iñigo Boeing Enterprise Visualization China Italy Department of Computer Science University of North Carolina Chapel Hill United States Lawrence Livermore National Laboratory United States Visualization Systems Group United States United States Department of Computer Science Technical University of Ilmenau Germany University of Utah's SCI Institute United States Department of Computer Graphics and Digital Media Saarland University Germany Computer Graphics Group Saarland University Germany

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Search and retrieval in CAD databases a user-centric state-of-the-art overview 12

Search and retrieval in CAD databases a user-centric state-o...

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12th International Joint Conference on computer Vision, Imaging and computer graphics Theory and Applications, VISIGRAPP 2017

作者： Schinko, Christoph Vosgien, Thomas Prante, Thorsten Schreck, Tobias Ullrich, Torsten Fraunhofer Austria Research GmbH Visual Computing Graz Graz Austria Institute of Computer Graphics and Knowledge Visualization Graz University of Technology Graz Austria V-Research GmbH Dornbirn Austria

ISBN: (纸本)9789897582240

This article presents a state-of-the-art overview on shape, information and design retrieval systems in the context of CAD engineering. In contrast to existing surveys, we classify the different approaches from a CAD application user point of view. As a consequence, we focus on features of surveyed techniques such as: Supported shape data types, handling of geometric invariances, support of metadata, supported query types, quality of retrieval results, and the availability of implementations. © 2017 by SCITEPRESS - Science and Technology Publications, Lda.

关键词： computer aided design

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Probabilistic state machines. Dialog management for inputs with uncertainty 92

Probabilistic state machines. Dialog management for inputs w...

引用

Proceedings of the ACM Symposium on User Interface Software and Technology

作者： Hudson, Scott Newell, Gary Graphics Visualization and Usability Center College of Computing Georgia Institute of Teehnology Atlanta 30332-0280 GA United States Department of Computer Science University of Arizona Tucson 85721 AZ United States

ISBN: (纸本)0897915496

Traditional models of input work on the assumption that inputs delivered to a system are fairly certain to have occurred as they are reported. However, a number of new input modalities, such as pen-based inputs, hand and body gesture inputs, and voice input, do not share this property. Inputs under these techniques are normally acquired by a process of recognition. As a result, each of these techniques makes mistakes and provides inputs which are approximate or uncertain. This paper considers some preliminry techniques for dialog management in the presence of this uncertainty. These techniques—including a new input model and a set of extended state machine abstractions—will explicitly model uncertainty and handle it as a normal and expected part of the input process.

关键词： Uncertainty analysis

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Modeling and visualizing the cultural heritage data set of Graz 01

Modeling and visualizing the cultural heritage data set of G...

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Proceedings of the 2001 conference on Virtual reality, archeology, and cultural heritage

作者： Christopher Zach Andreas Klaus Joachim Bauer Konrad Karner Markus Grabner VRVis Research Center for Virtual Reality and Visualization and Institute for Computer Graphics and Vision Graz Austria Institute for Computer Graphics and Vision Graz Austria

ISBN: (纸本)9781581134476

The inner city (Old Town) of Graz will be the European cultural capital in 2003. In this paper we present preliminary results on the reconstruction and visualization of this kind of cultural heritage data. Starting with a simple block model obtained by converting 2 1/2 dimensional GIS (geographic information system) data we focus on the image based modeling of the facades. Herein we illustrate a robust search for corresponding points to estimate the relative orientation between image ***, we outline our real-time rendering approach based on a LOD-R-tree concept. Special attention is paid on the LOD (level of detail) generation for historic buildings where two different ways working in 2D and 3D are explained. The visualization system is communicating asynchronously with a database system storing the LOD-R-tree data structure. This client-server configuration provides interactive navigation through the virtual scene and the scalability of a database management system.

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Feature-based visualization of dense integral line data

Feature-based visualization of dense integral line data

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International Research and Training Group 1131 Workshop on visualization of Large and Unstructured Data Sets: Applications in Geospatial Planning, Modeling and Engineering, VLUDS 2011

作者： Schröder, Simon Obermaier, Harald Garth, Christoph Joy, Kenneth I. Computer Graphics and HCI Group University of Kaiserslautern Germany Fraunhofer ITWM Kaiserslautern Germany Computational Topology Group University of Kaiserslautern Germany Institute for Data Analysis and Visualization University of California Davis United States

ISBN: (纸本)9783939897460

Feature-based visualization of flow fields has proven as an effective tool for flow analysis. While most flow visualization techniques operate on vector field data, our visualization techniques make use of a different simulation output: Particle Tracers. Our approach solely relies on integral lines that can be easily obtained from most simulation software. The task is the visualization of dense integral line data. We combine existing methods for streamline visualization, i. e. illumination, transparency, and halos, and add ambient occlusion for lines. But, this only solves one part of the problem: because of the high density of lines, visualization has to fight with occlusion, high frequency noise, and overlaps. As a solution we propose non-automated choices of transfer functions on curve properties that help highlighting important flow features like vortices or turbulent areas. These curve properties resemble some of the original flow properties. With the new combination of existing line drawing methods and the addition of ambient occlusion we improve the visualization of lines by adding better shape and depth cues. The intelligent use of transfer functions on curve properties reduces visual clutter and helps focusing on important features while still retaining context, as demonstrated in the examples given in this work.

关键词： Transfer functions

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Dynamic process support based on users' behavior

Dynamic process support based on users' behavior

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International Conference on Interactive Collaborative Learning (ICL)

作者： Dirk Burkhardt Kawa Nazemi Information Visualization and Visual Analytics Fraunhofer-Institute for Computer Graphics Research Darmstadt Germany

Nowadays there is a gap between the possibilities and the massively existing data on the one side and the user as main worker on the other side. In different scenarios e.g. search, exploration, analysis and policy-modeling a user has to deal with massive information, but for this work he usually gets a static designed system. So meanwhile data-driven work-processes are increasing in its complexity the support of the users who are working with these data is limited on basic features. Hence this paper describes a concept for a process-supporting approach, which includes relevant aspects of users' behaviors in support him to successfully finish also complex tasks. This will be achieved by a process-based guidance with an automatic tools selection for every process and activity on the one hand. And on the other hand the consideration of expert-level of a user to a single task and process. This expert-level will be classified during each task and process interaction and allow the automatically selection of optimal tools for a concrete task. In final the user gets for every task an automatically initialized user-interface with useful and required tools.

关键词： Data visualization Process control computers Adaptation models Software Context Business

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