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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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Towards process-oriented Information visualization for supporting users

Towards process-oriented Information Visualization for suppo...

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International Conference on Interactive Collaborative Learning (ICL)

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

Nowadays daily office work consists of dealing with big numbers of data and data sources, and furthermore of working with complex computer programs. In consequence many users have problems to use such programs effective and efficient. In particular beginners have significant problems to use the programs correctly due to complex functionality and interaction options. To avoid this overload of the user, the Information visualization community has recently developed some approaches that aim to support the users. Unfortunately, these approaches are limited to one special aspect, and sometimes they are just appropriate for one special task. Thus, in this paper we introduce a process-oriented user-supporting approach. It allows selecting adequate supporting techniques in correlation to a performed process and activity to guide the user and help him to solve his task. Furthermore, we show the benefits of designing programs and applications, which implement process definitions for the existing tasks to provide the user with better process orientation. This guides the user through difficult and complex processes.

关键词： Data visualization Semantics Visual analytics Keyboards computers Concrete

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A scalable repository infrastructure for CH digital object management

A scalable repository infrastructure for CH digital object m...

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2012 18th International Conference on Virtual Systems and Multimedia: Virtual Systems in the Information Society, VSMM 2012

作者： Pan, X. Schiffer, T. Schröttner, M. Havemann, S. Hecher, M. Berndt, R. Fellner, D.W. Institute of Computer Graphics and Knowledge Visualization Graz University of Technology Inffeldgasse 16c 8010 Graz Austria Fraunhofer Austria Research Visual Computing Inffeldgasse 16c 8010 Graz Austria

ISBN: (纸本)9781467325653

In recent decades, researchers of archaeological 3D digitalization found that the collection and archive of processing intermediate data are extremely tiresome tasks. They need large of man power and material resources, even though, mistakes can be raised and break the whole working chain. The traditional documentation of digitalization process is also a pending challenge, although, the ISO standard CIDOC-CRM (ISO 21127:2006) has been introduced to the archaeologists and museum professionals since years, but there are still some obvious gaps between practice and theory: (1) How to connect the discrete archaeologists, museums, CH research institutions, and the public? (2) How to ensure the integrity of whole digitalization process and simplify the process? (3) How to maximize the usability of the public digital objects in CH community? (4) How to long term preserve the huge amount of datasets? (5) How to present and disseminate the digital object to the public? This paper presents an operational and optimal infrastructure that realizes not only a distributed storage system, but also a content management system. This infrastructure works as a backbone of whole digitalization process, provides a complete solution suite for archaeologists, museum professionals, museum visitors, and IT technicians. © 2012 IEEE.

关键词： Digital storage

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Using gameplay semantics to procedurally generate player-matching game worlds 12

Using gameplay semantics to procedurally generate player-mat...

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

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

ISBN: (纸本)9781450314473

The use of procedural content generation to support adaptive games is starting to gain momentum in current research. However, there are still many open issues to tackle, namely the reusability of methodologies. Our research focuses on reusable and generic methods for linking the procedural generation of 3D game worlds with gameplay, as measured by player modelling techniques. As the interface for that link, we propose the use of gameplay semantics, a knowledge representation technique that allows our case-based generator to match content to player models. We present and discuss the implementation of our proposed method in an existing game, Stunt Playground. Gameplay semantics is created by designers in a generic way and is then used to procedurally generate player-matching Stunt Playground game worlds, both at the design and game stage. Current results show that our approach can automatically create such adaptive game content, thus effectively bridging game world designers, procedural generation and gameplay.

关键词： semantics adaptive game worlds procedural content generation

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CFD simulation of liquid-liquid extraction columns and visualization of eulerian datasets

CFD simulation of liquid-liquid extraction columns and visua...

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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： Hlawitschka, Mark W. Chen, Fang Bart, Hans-Jörg Hamann, Bernd Department of Separation Science and Technology University of Kaiserslautern Germany Computer Graphics and HCI Group University of Kaiserslautern Germany CS Department Institute for Data Analysis and Visualization University of California Davis United States 2 University of Kaiserslautern Germany

ISBN: (纸本)9783939897460

In this joint work, a complete framework for modeling, simulating and visualizing multiphase fluid flow within an extraction column is presented. We first present a volume-of-fluid simulation, which is able to predict the surface of the droplets during coalescence. However, a fast and efficient model is needed for the simulation of a liquid-liquid extraction column due to the high number of occurring droplets. To simulate the velocity and droplet size in a DN32 extraction column, a coupled computational fluid dynamic-population balance model solver is used. The simulation is analyzed using path-line based visualization techniques. A novel semi-automatic re-seeding technique for droplet path-line integration is proposed. With our technique, path-lines of fluid droplets can be re-initialized after contact with the stirring devices. The droplet breakage is captured, allowing the engineer to improve the design of liquid-liquid columns layout.

关键词： Computational fluid dynamics

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Designing Semantic Game Worlds 12

Designing Semantic Game Worlds

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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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A scalable repository infrastructure for CH digital object management

A scalable repository infrastructure for CH digital object m...

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International Conference on Virtual Systems and MultiMedia

作者： X. Pan T. Schiffer M. Schröttner S. Havemann M. Hecher R. Berndt D. W. Fellner Institute of Computer Graphics and Knowledge Visualization Graz University of Technology Graz Austria Fraunhofer Austria Research Visual Computing Graz Austria

关键词： Solid modeling Databases Servers Semantics Data models Usability System analysis and design

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Viargo - A generic virtual reality interaction library

Viargo - A generic virtual reality interaction library

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Workshop on Software Engineering and Architectures for Realtime Interactive Systems (SEARIS)

作者： Dimitar Valkov Benjamin Bolte Gerd Bruder Frank Steinicke Visualization and Computer Graphics (VisCG) Research Group University of Münster Germany Immersive Media Group (IMG) University of Würzburg Germany

Traditionally, interaction techniques for virtual reality applications are implemented in a proprietary way on specific target platforms, e. g., requiring specific hardware, physics or rendering libraries, which withholds reusability and portability. Though hardware abstraction layers for numerous devices are provided by multiple virtual reality libraries, they are usually tightly bound to a particular rendering environment. In this paper we introduce Viargo - a generic virtual reality interaction library, which serves as additional software layer that is independent from the application and its linked libraries, i. e., a once developed interaction technique, such as walking with a head-mounted display or multi-touch interaction, can be ported to different hard- or software environments with minimal code adaptation. We describe the underlying concepts and present examples on how to integrate Viargo in different graphics engines, thus extending proprietary graphics libraries with a few lines of code to easy-to-use virtual reality engines.

关键词： Engines Rendering (computer graphics) Cameras Libraries Hardware Synchronization

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Collaborative Factory Planning in Virtual Reality

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Procedia CIRP 2012年 3卷 317-322页

作者： N. Menck X. Yang C. Weidig P. Winkes C. Lauer H. Hagen B. Hamann J.C. Aurich Institute for Manufacturing Technology and Production Systems (FBK) 67653 Kaiserslautern Germany Computer Graphics and HCI Group 67653 Kaiserslautern Germany Institute for Data Analysis and Visualization (IDAV) Davis 95616-8562 USA

The competitive development and optimization of manufacturing systems challenge the collaboration and innovation of enterprises. Different information, thinking, and points of view have to be exchanged across engineering, decision-making, and executive levels safely and effectively. The Virtual Reality (VR) technologies provide the users advanced Human-computer-Interfaces for designing, analyzing, and optimizing complex manufacturing systems. The objective of this paper is to describe a VR-based approach that allows the simultaneous visualization, investigation, and analysis for factory planning. This gives global entities a competitive advantage when conducting business.

关键词： Distance Collaboration Factory Planning Virtual Reality

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