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Title of tutorial: Designing immersive VR systems: From bits to bolts

Title of tutorial: Designing immersive VR systems: From bits...

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IEEE Annual International Symposium Virtual Reality

作者： Luciano P. Soares Joaquim A. Jorge José Miguel Salles Dias Alberto Raposo Bruno R. de Araújo Leonel Valbom Filipe Gaspar Tecgraf - Computer Graphics Technology Group Pontifical Catholic University of Rio de Janeiro Instituto Superior Técnico ISCTE IUL MLDC - Microsoft Language Development Center Escola Superior Gallaecia

Immersive 3D Virtual Environments (VE) have become affordable for many research centers. However, a complete solution needs several integration steps to be fully operational. Some of these steps are difficult to accomplish and require an uncommon combination of different skills. This tutorial presents the most recent techniques developed to address this problem, from displays to software tools. The hardware in a typical VR installations combines projectors, screens, speakers, computers, tracking and I/O devices. The tutorial will discuss hardware options, explaining their advantages and disadvantages. We will cover design decisions from basic software and hardware design, through user tracking, multimodal human-computer interfaces and acoustic rendering, to how to administrate the whole solution. Additionally, we will provide an introduction to existing tracking technologies, explaining how the most common devices work, while focusing on infrared optical tracking. Finally, we briefly cover integration software and middleware developed for most VE settings.

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A collaborative VR visualization environment for offshore engineering projects

A collaborative VR visualization environment for offshore en...

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10th International Conference on Virtual Reality Continuum and Its Applications in Industry, VRCAI'11

作者： DosSantos, Ismael H.F. Soares, Luciano P. Carvalho, Felipe Raposo, Alberto CENPES - Petrobras Research Center Rio de Janeiro Brazil Tecgraf - Computer Graphics Technology Group Pontifical Catholic University Rio de Janeiro Brazil

ISBN: (纸本)9781450310604

The current way of designing industrial plants relies on the communication among experts in the field, and on tools that allow the simulation of the site. Virtual reality (VR) tools are used to visualize and interact with complex 3D environments in real time, and several engineering simulations employ VR to foresee the results of complex industrial operations. The research project described here presents a collaborative engineering environment (CEE) that integrates VR techniques into a system where the execution of different sequences of engineering simulations is modeled as scientific workflows. The focus of this research is on the oil & gas industry, particularly offshore engineering, where the project of a new production unit is a lengthy and expensive process and usually is conducted by different specialists who are geographically distributed. Among the integrated engineering simulations are those involving structural calculus, hydrodynamics, naval engineering with mooring systems, meteo-oceanography, and others. The main objective is to improve the users' interpretation capacity and skills while providing visualization tools for a better understanding of the results. © 2011 ACM.

关键词： Virtual reality

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Didactic games system: Fifteen years of development in military simulation

Didactic games system: Fifteen years of development in milit...

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6th International North-American Conference on Intelligent Games and Simulation 2011, Game-On 'NA 2009 and 3rd International North American Simulation technology Conference, NASTEC 2011

作者： De Oliveira Lyrio, Gustavo Henrique Soares De Beauclair Seixas, Roberto PUC-Rio-Pontifical Catholic University TECGRAF-Computer Graphics Technology Group Rua Marques de Säo Vicente 225 22453-900 Rio de Janeiro RJ Brazil IMPA-National Institute for Pure and Applied Mathematics Estrada Dona Castorina 110 22460-320 Rio de Janeiro RJ Brazil

ISBN: (纸本)9789077381656

This work has the goal of presenting the author's experience through the last fifteen years developing military simulation games for the Brazilian Marine Corps. Starting from the birth of the idea of a didactic training game, we pass through the problems found and the solutions adopted to nowadays, where the system covers all kinds of attributions that a Brazilian Marine officer could receive.

关键词： Circuit simulation

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A game system approach for training and evaluation: Two sides of the same coin

A game system approach for training and evaluation: Two side...

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12th International Conference on Intelligent Games and Simulation, GAME-ON 2011

作者： de Moraes, Claudio Coreixas de Vasconcelos Campos, Daniel de Beauclair Seixas, Roberto Day, Michael Aaron Naval Postgraduate School - NPS University Circle Monterey CA 93943 United States Computer Graphics Technology Group TECGRAF Pontificia Universidade Catolica do Rio de Janeiro PUC-Rio Rua Marques de Sao Vicente 255 Rio de Janeiro RJ Brazil Institute of Pure and Applied Mathematics IMPA Estrada Dona Castorina 110 Rio de Janeiro RJ Brazil

ISBN: (纸本)9789077381649

Imagine yourself trying to interpret a theoretical sequence of actions for a given task from a procedures manual. The task implies doing a mental simulation of the spatial representation of all the theoretical actions. Visualizing complex spatial tasks is hard;practicing them in real life for the first time is even more complicated and many times involves correction via feedback from an instructor. We found that two systems that are under development as research projects that can be matched to improve instruction for cognitively complex tasks. Our objective in this paper is an attempt to combine a command and control system and a game-based ship simulator which will create an architecture for a powerful Live Virtual (LV) simulation system. Using this framework, we can bridge the gap between practical and theoretical instruction by providing instantaneous feedback to the instructor and After Action Review (AAR) to the student. © 2011 EUROSIS-ETI.

关键词： Serious games

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Real-time warfare simulation goes web 2.0

Real-time warfare simulation goes web 2.0

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5th International North-American Conference on Intelligent Games and Simulation, Game-On 'NA 2009

作者： De Oliveira Lyrio, Gustavo Henrique Soares De Beauclair Seixas, Roberto Institute of Pure and Applied Mathematics - IMPA Estrada Dona Castorina 110 Rio de Janeiro RJ 22460-320 Brazil Computer Graphics Technology Group - TECGRAF Pontifcia Universidade Catlica Do Rio de Janeiro PUC-Rio Rua Marqus de So Vicente 255 Rio de Janeiro RJ 22453-900 Brazil

This work presents the authors' experience in the process of developing a massive real time multi-player for military tactical online training simulations, and how some web 2.0 applications provide helpful tools t... 详细信息

关键词： Serious games

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GPU-accelerated Adaptively Sampled Distance Fields

GPU-accelerated Adaptively Sampled Distance Fields

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IEEE International Conference on Shape Modeling and Applications

作者： Bastos, Thiago Celes, Waldemar Tecgraf - Computer Graphics Technology Group Department of Computer Science PUC-Rio Brazil

ISBN: (纸本)9781424422609

Adaptively Sampled Distance Fields (ADFs) are volumetric shape representations that support a broad range of applications in the areas of computer graphics, computer vision and physics. ADFs are especially beneficial for representing shapes with features at very diverse scales. In this paper, we propose a strategy to represent and reconstruct ADFs on modem graphics hardware (GPUs). We employ a 3D hashing scheme to store the underlying data structure and try to balance the tradeoff between memory requirements and reconstruction efficiency. To render ADFs on GPU, we use a general-purpose ray-casting technique based on sphere tracing, which guarantees the reconstruction of fine details. We also present a way to overcome the C-1 discontinuities inherent to ADFs and efficiently reconstruct smooth surface normals across cell boundaries. The effectiveness of our proposal is demonstrated for isosurface rendering and morphing.

关键词： ADFs GPU algorithms implicit surface rendering

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GPU-accelerated Adaptively Sampled Distance Fields

GPU-accelerated Adaptively Sampled Distance Fields

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International Conference on Shape Modeling and Applications

作者： Thiago Bastos Waldemar Celes Department of Computer Science Tecgraf Computer Graphics Technology Group Brazil

Adaptively Sampled Distance Fields (ADFs) are volumetric shape representations that support a broad range of applications in the areas of computer graphics, computer vision and physics. ADFs are especially beneficial for representing shapes with features at very diverse scales. In this paper, we propose a strategy to represent and reconstruct ADFs on modern graphics hardware (GPUs). We employ a 3D hashing scheme to store the underlying data structure and try to balance the tradeoff between memory requirements and reconstruction efficiency. To render ADFs on GPU, we use a general-purpose ray-casting technique based on sphere tracing, which guarantees the reconstruction of fine details. We also present a way to overcome the Cl discontinuities inherent to ADFs and efficiently reconstruct smooth surface normals across cell boundaries. The effectiveness of our proposal is demonstrated for isosurface rendering and morphing.

关键词： Shape computer graphics Application software computer vision Physics Hardware Data structures Rendering (computer graphics) Surface reconstruction Proposals

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Using Lua as script language in games coded in Java

Using Lua as script language in games coded in Java

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4th International North-American Conference on Intelligent Games and Simulation, Game-On 'NA 2008

作者： De Oliveira Lyrio, Gustavo Henrique Soares De Beauclair Seixas, Roberto Institute of Pure and Applied Mathematics - IMPA Estrada Dona Castorina 110 Rio de Janeiro RJ 22460-320 Brazil Computer Graphics Technology Group - TECGRAF Catholic University of Rio de Janeiro - PUC-Rio Rua Marqus de So Vicente 255 Rio de Janeiro RJ 22453-900 Brazil

ISBN: (纸本)9789077381427

Lua is a programming language that has been well accepted by the game development community as a script language. That is because Lua offers a series of methods to allow the use of C functions inside Lua code and vice-versa. When developers choose to code a game in Java, apparently Lua is not an option anymore. The objective of this work is to show that Lua can also be used as script language for games coded in Java. For that developers just need to know the LuaJava library and a few tips.

关键词： Software design

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EnViron: An integrated VR tool for engineering projects

EnViron: An integrated VR tool for engineering projects

引用

International Conference on computer Supported Cooperative Work in Design

作者： Ismael H. F. dos Santos Alberto Raposo Luciano P. Soares Eduardo T. L. Corseuil Gustavo N. Wagner Paulo I. N. Santos Rodrigo de Toledo Marcelo Gattass Petrobras Research Centre-CENPES Rio de Janeiro Brazil Tecgraf-Computer Graphics Technology Group PUC-Rio-Pontifical Catholic University of Rio de Janeiro Rio de Janeiro Brazil

ISBN: (纸本)9781424416509

One of the main objectives in engineering departments of large industries is the implementation of integrated information systems to manage their projects' life cycle. EnViron (environment for virtual objects navigation) is an application motivated by the demand to use virtual reality (VR) in large industrial engineering models generated by CAD tools. EnViron's main goal is to offer 3D visualization resources for CAD models with enough realism to be used for virtual prototyping, collaborative design review, change management systems and training, among other activities.

关键词： Virtual reality Design automation Management training Management information systems Information management Project management Engineering management Navigation Industrial engineering Visualization

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Continuous interaction with TDK: Improving the user experience in terralib

Continuous interaction with TDK: Improving the user experien...

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9th Brazilian Symposium on GeoInformatics, GEOINFO 2007

作者： Metello, Marcelo De Sá Vera, Mário Lemos, Melissa Masiero, Leone Pereira De Carvalho, Marcelo Tilio Monteiro Tecgraf - Computer Graphics Technology Group Pontifical Catholic University of Rio de Janeiro Rua Marquês de São Vicente 225 Gávea Rio de Janeiro RJ 22453-900 Brazil

ISBN: (纸本)9788517000362

Historically, visual display has always played a very important role in GIS applications. However, visual exploration tools do not scale well when applied to huge spatial data sets. More recently, faster processing hardware and more sophisticated computer graphics has been used to improve user experience for geospatial data visualization. Some applications have recently introduced the concept that the user should be able to navigate through the data in a smooth and continuous way without being blocked waiting for data to be loaded, even if this means seeing incomplete data for some time. Google Earth and NASA World Wind are recent examples of this concept. This paper describes an architecture incorporated in the TDK (TerraLib Development Kit) open source API to provide support for applications that want this kind of user interaction with Terralib geographical data.

关键词： NASA

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