Página 1 dos resultados de 79 itens digitais encontrados em 0.001 segundos

Grand Prix race teams : mundo virtual multiutilizador de corridas de automóveis

Cardoso, Vitor; Cardoso, Catarina; Sorensen, Mogens
Fonte: Universidade Aberta Publicador: Universidade Aberta
Tipo: Artigo de Revista Científica
Publicado em //2006 POR
Relevância na Pesquisa
27.59%
Grand Prix é um mundo virtual em ambiente 3D multiutilizador de corridas de automóveis. Criado inicialmente para demonstrar as potencialidades destas tecnologias aos estudantes de Informática e motivar a realização de projectos e investigação em realidade virtual, foi concebido em VRML/X3D, é visualizado num navegador Internet (browser) e está disponível on-line, via Web. A acção passa-se numa pista de corridas de automóveis com 3.7 km onde os visitantes escolhem um carro e se desafiam uns aos outros ou aos 2 carros robot sempre disponíveis para qualquer desafio.; Grand Prix is a 3D Multi-user Car Racing World. Initially created to demonstrate the technology’s potential to students and motivate investigation on virtual reality, conceived in VRML/X3D and navigated trough a browser (+plug-in) is available on-line, via Web. The action takes place is a race track with 3.7 km where visitors pick cars and challenge one another, participating in races, or against the 2 robot cars always ready for a defy.

Um roteiro para a criação de programa computacional dedicado à geração de pré-projeto arquitetônico de habitações sociais: realimentação de modelo a partir de avaliações pós-ocupação; A roadmap for the creation of dedicated software the generation of pre-architectural project of social housing: feedback model from Post-Occupancy Evaluations

Ferreira, Marcelo de Paula
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 17/04/2009 PT
Relevância na Pesquisa
27.79%
Habitar ambientes dimensionados a partir de estudos antropométricos e Avaliações Pós-Ocupação (APOs) dos aspectos funcionais é conseqüência de processos de projeto arquitetônico a serem consolidados. A tecnologia tem permitido obter um maior controle sobre todas as fases da produção de edificações, sendo a fase de pré-projeto decisiva para o efetivo sucesso de um empreendimento. A presente pesquisa objetiva o desenvolvimento de um roteiro para a elaboração de um programa computacional de Projeto e Desenho Arquitetônico Auxiliado por Computador (CAADD - Computer Aided Architectural Design and Drafting) que contribua para o trabalho do arquiteto nas análises geométricas de dimensionamento funcional de edificações habitacionais sociais multi-familiares, no momento do pré-projeto, considerando as especificidades do conjunto de variáveis envolvidas em cada situação de projeto. Ao escolher as alternativas de composição de Programa de Necessidades no sistema, este geraria maquetes eletrônicas (modelo digital) a partir dos parâmetros definidos no próprio programa. Os volumes abstraídos em meio digital são tratados genericamente no sistema como objetos volumétricos (mobiliário, eletrodomésticos, peças sanitárias...

Museus virtuais

Flores, Rui Pedro Pelica Santos
Fonte: Universidade de Lisboa Publicador: Universidade de Lisboa
Tipo: Dissertação de Mestrado
Publicado em //2012 POR
Relevância na Pesquisa
27.59%
Trabalho de projecto de mestrado em Engenharia Informática (Sistemas de Informação), apresentado à Universidade de Lisboa, através da Faculdade de Ciências, 2012; Para os museus e galerias de arte a divulgação das suas exposições através da Web é importante, quer para atrair visitantes, quer para a difusão de património artístico e cultural. Idealmente pretende-se que a experiência de visitar virtualmente uma exposição, através de modelos virtuais, seja a mais aproximada possível de uma visita ao espaço físico real. O desenvolvimento de ferramentas para a criação de exposições virtuais, através de modelos tridimensionais, além de possibilitar a divulgação das exposições, permite ainda auxiliar a concepção e montagem da própria exposição. Existia já uma aplicação elaborada no âmbito da equipa de investigação em que este projecto se integra, Virtual Exhibition Builder, que recorre a modelos tridimensionais em X3D. Existe agora uma maior aposta em aplicações Web baseadas em modelos tridimensionais, contribuindo, para isso, o recente boom das aplicações 3D na Web, através de novas tecnologias, como WebGL. O principal objectivo deste projecto foi o desenvolvimento de uma ferramenta para auxiliar os técnicos de museus...

Creating and Assembling Virtual Exhibitions from Existing X3D Models

Gomes, Jorge; Carmo, Maria Beatriz; Cláudio, Ana Paula
Fonte: Universidade de Lisboa Publicador: Universidade de Lisboa
Tipo: Relatório
Publicado em 04/10/2011 ENG
Relevância na Pesquisa
37.59%
Reviewed by Ana Paula Afonso; Virtual visits on the Web are an important means to publicize a museum collection and attract visitors. Software applications for building virtual exhibitions, in addition to being tools to create content for virtual visits, may help the staff of a museum to conceive and mount exhibitions. This report presents the Virtual Exhibition Builder, an interactive software tool aimed at the creation of virtual exhibitions, given a 3D model of the physical environment of the museum described in an X3D file, and information about the artworks. The development of this tool involves inputs proposed by museum experts.

Extensible 3D (X3D) Earth Technical Requirements Workshop summary report

Brutzman, Don; Sadagic, Amela; Norbraten, Terry
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Relevância na Pesquisa
28.15%
Approved for public release, distribution unlimited; The initial X3D Earth Technical Requirement Workshop called together leading researchers, developers and industry experts to determine a broad set of technical requirements that will be necessary to construct an X3D Earth. This workshop was held 14-15 November 2006 at the Naval Postgraduate School (NPS) in Monterey, California, USA. The main goal in the creation of an Extensible 3D (X3D) Earth will be achieved by Web3D Consortium members who are preparing to build a standards-based suite of software tools usable by governments, industry, scientists, academia and the general public. X3D mappings of world terrain, cartography and imagery will be made available for use in any scene, making it easy to geospatially reference and share X3D models. Open standards, the Web architecture, utilization of the Extensible Markup Language (XML) and open protocols will be leveraged throughout. Both commercial and open-source software codebases will be able to utilize these best practices and contribute to these shared assets. The goal of this technical requirements workshop was for participants to identify and prioritize the technical requirements, available capabilities, open challenges and strategic partnerships needed for a Web3D working group to execute this ambitious project. Emphasis was placed on extensibly adapting existing resources and in cooperation towards achieving shared goals...

Using XML/HTTP to store, serve and annotate tactical scenarios for X3D operational visualization and anti-terrorist training

Mnif, Khaled
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Relevância na Pesquisa
27.79%
Approved for public release, distribution unlimited; Adopting Extensible Markup Language (XML) and Hypertext Transfer Protocol (HTTP) are key steps to accommodate the evolution of Internet technologies. While HTTP is already a proven standard communication protocol responsible for the rapid expansion of the World Wide Web, XML provides general mechanisms for determining validatable documents and addresses several deficiencies of HTML regarding diverse document structure and content. XML and HTTP together provide many of the essential capabilities associated with database engines. The Modeling, Virtual Environments and Simulation (MOVES) Institute of the Naval Postgraduate School (NPS) is continuing to build a database of 3D tactical scenarios and using X3D and VRML tools. The configuration parameters and statistical results of these scenarios are XML documents. For a better understanding and usability of these results by the end users, a Webbased application stores and manipulates these XML document. This thesis develops a server-side application that can store, serve, and annotate tactical scenarios for X3D operational visualization and anti-terrorist training by using XML and HTTP technologies. The experimental demonstration for this work is the prototypical Anti-Terrorism/Force Protection (AT/FP) simulation model developed by Lieutenant James W. Harney...

Extensible 3D (X3D) graphics clouds for geographic information systems

Murphy, Darren W.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Relevância na Pesquisa
27.79%
This research evaluates the production of three dimensional (3D) clouds for geospatial viewing programs such as Google Earth, NASA World Wind, and X3D Earth. This thesis took advantage of iso-standard X3D graphics and X3D Edit in conjunction with manually produced image textures to represent 3D clouds. While a 3D geospatial viewing might never completely characterize the current state of the atmosphere, a sufficiently realistic virtual 3D rendering can be created to present current sky coverage given adequate satellite and model data. Various visualization demonstration results are presented that can be rendered and navigated in real time. Further research and development is needed to match a cloud typing model output with a particular method of 3D cloud production. Data-driven adaptation and production of cloud models for web-based delivery is an achievable capability given continued research and development.

X3D-Earth full globe coverage utilizing multiple datasets

Tourtelotte, Dale R.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Relevância na Pesquisa
28.02%
Approved for public release, distribution unlimited; U.S. Armed Forces are typically utilizing and paying for commercial proprietary licensed products to visualize geospatial scenes, which nevertheless are themselves derived from government-produced data. This is unsatisfactory. This thesis has developed an open-source, royalty-free method for generating full-coverage 3D globes using the Extensible 3D (X3D) Graphics International Standard. Specifically, this thesis designs and generates robust globe models developing an instance of full global coverage utilizing X3D-Earth. In order to show interoperability and "Mash up" capabilities, multiple formats are used, including DTED Level 0 and NGA-produced satellite imagery. Imagery and corresponding terrain datasets are preprocessed using image processing and terrain parsing software, creating the X3D-Earth quad-tree tiles into multiple level-of-detail (LOD) file archives. Finally, these pyramidal, locale scenes are grouped and connected to form an overall X3D-Earth globe. Preprocessing, processing and data storage are performed with the NPS Hamming Supercomputer. The result of this work is a methodology for generating X3D-Earth locales that is suitable for massive replication, optimization and reuse. Current results are promising and further work is warranted. The ultimate product is expected to further enable new tactical capabilities...

Beyond viewpoint: X3D camera nodes for digital cinematography

Weekley, Jeffrey D.; Brutzman, Don
Fonte: ACM Publicador: ACM
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
27.92%
The article of record as published may be located at http://dx.doi.org/10.1145/1559764.1559776; This paper describes four candidate X3D extension nodes: Camera, Shot, Movement and OffineRendering. An X3D lexicon for camera movements is defined so that individuals directing virtual cameras in X3D can directly apply terms that film directors and cinematographers understand. This approach greatly simplifies the technical tasks involved in crreating precise camera animations and setting up still images for digital photography. Further, candidate methods are examined for implementing Depth of Field for focus control. Moving beyond the typical clumsiness of Viewpoint control can enable authors to create compelling still and moving images from X3D scenes.

Video Requirements for Web-based Virtual Environments using extensible 3D (X3D) graphics

Brutzman, Don; Kolsch, Mathias
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
27.92%
Submitted to W3C Video on the Web Workshop; Real-time interactive 3D graphics and virtual environments typically include a variety of multimedia capabilities, including video. The Extensible 3D (X3D) Graphics is an ISO standard produced by the Web3D Consortium that defines 3D scenes using a scene-graph approach. Multiple X3D file formats and language encodings are available, with a primary emphasis on XML for maximum interoperability with the Web architecture. A large number of functional capabilities are needed and projected for the use of video together with Web-based virtual environments. This paper examines numerous functional requirements for the integrated use of Web-compatible video with 3D. Three areas of interest are identified: video usage within X3D scenes, linking video external to X3D scenes, and generation of 3D geometry from video.

X3D: Extensible 3D Graphics Standard

Daly, Leonard; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
27.59%
The article of record as published may be located at http://dx.doi.org/10.1109/MSP.2007.905889; Extensible 3D (X3D) is the open standard for Web-delivered three-dimensional (3D) graphics. It specifies a declarative geometry definition language, a run-time engine, and an application program interface (API) that provide an interactive, animated, real-time environment for 3D graphics. The X3D specification documents are freely available, the standard can be used without paying any royalties, and numerous implementations are available.

Best Practices and Workflows for Producing Video-Based Classroom Content; Case Study: Producing X3D for Web Authors

Malnick, Jeff; Brutzman, Don; Weekley, Jeffrey
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Relevância na Pesquisa
27.92%
3. ABSTRACT Introduction to Extensible 3D (X3D) Graphics (MV3204) and Advanced X3D Graphics (MV4205) are a pair of well-established courses with a custom textbook, an X3D example archive, annotated slide-sets, and the X3D-Edit authoring tool. This case study reports on lessons learned from producing 62 sessions totaling over 37 hours of video instruction. Topics include how to prepare and present video sessions for each lesson, recording and production techniques, building a video website, and teaching to remote students while recording. Most importantly we show the feasibility and repeatability of recording classroom video sessions with minimal post-production requirements, thus reducing video-production labor costs significantly. We also demonstrate the ability to use open-standard and open-source NPS-produced software to create a satisfactory course website. This report summarizes the entire production software to create a satisfactory course website. This report summarizes the entire production process ranging from proper preparation of course materials to pre-production, classroom presentation, speaker recording, screen capture, digital production, and post-production of video sessions. Detailed workflow diagrams...

Integration of X3D Geospatial in a Data Driven Web Application

McCann, Michael; Yoo, Byounghyun; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
37.59%
The Monterey Bay Aquarium Research Institute designed the Spatial Temporal Oceanographic Query System (STOQS) [MBARI 2014] to create new capabilities for scientists to gain insight from their data. STOQS employs open standards and is a 100% free and open source project. It includes a web-based graphical user interface where X3D Geospatial has been integrated to enable 3D geospatial data visualization.

X3D Distributed Interactive Simulation (DIS) Implementation and Run-Time Discovery of New Entities using X3DOM

McGregor, Don; Harder, Byron; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
37.92%
New capabilities in web browser JavaScript implementations including networking, improved graphics performance, and improved speed allow the implementation of Networked Virtual Environments (NVEs) inside the web browser. An NVE can be written in JavaScript, which enables deployment in the enterprise entirely from a web server without the use of browser plugins. We discuss one implementation of this idea using X3DOM, an opensource implementation of the X3D standard written in JavaScript. The Open-DIS library for the IEEE Distributed Interactive Simulation (DIS) network protocol is used to create a partial implementation of the X3D standard’s DIS profile. Mechanisms for using the X3D DIS Profile DISEntityTypeMapping and DISEntityManager to enable run-time discovery and launching of new entities are discussed. Measurements of the capabilities and performance aspects of Websockets for network transport demonstrate excellent results.

Computer Graphics Teaching Support using X3D: Extensible 3D Graphics for Web Authors

Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
27.79%
X3D is the ISO-standard scene-graph language for interactive 3D graphics on the Web. A new course is available for teaching the fundamentals of 3D graphics using Extensible 3D (X3D). Resources include a detailed textbook, an authoring tool, hundreds of example scenes, and detailed slidesets covering each chapter. The published book is commercially available, while all other course-module resources are provided online free under open-source licenses. Numerous other commercial and open resources are available for X3D, which also serves as an interchange format. The supported course has been taught for many years, successfully introducing masters’ students to the principles and techniques of 3D graphics without requiring programming experience. This course is now ready for undergraduate use. Expressing 3D graphics modeling within the domain of Extensible Markup Language (XML) for the Web is novel and has the potential to open up computer graphics to many new practitioners. This combined resource is intended broadly support computer graphics education and 3D skills for web authors.

Savage Modeling and Analysis Language (SMAL) metadata for tactical simulations and X3D visualizations

Rauch, Travis M.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xxvi, 264 p. : col. ill. ;
Relevância na Pesquisa
28.02%
Visualizing operations environments in three dimensions (3D) supports the warfighters' ability to make rapid, well-informed decisions by presenting complex systems in a naturalistic, integrated display format. Unfortunately, constructing these environments is a time-consuming task requiring specific expertise not typically available in the command center. The future use of 3D visualization in military operations depends on the ability of personnel with minimal graphics experience to create virtual environments quickly and accurately by leveraging data-driven customization of content from model archives with the data available in the command center. Practical 3D visualization depends on standardized scene autogeneration. The Extensible 3D (X3D) Graphics family of specifications is approved by the International Standards Organization (ISO) as the Web-based format for the interchange and rendering of 3D scenes. Previous work has demonstrated that an archive of X3D scenes, such as the Scenario Authoring and Visualization for Advanced Graphical Environments (SAVAGE) library, can be used to autogenerate sophisticated 3D tactical environments. Assembling and making sense of the data necessary to autogenerate a 3D environment requires context and good documentation...

Promoting Spatial Data Use Via Open Architectures and X3D [video]

Tourtelotte, Dale R.; Brutzman, Don
Fonte: Monterey, California: Naval Postgraduate School. Publicador: Monterey, California: Naval Postgraduate School.
Tipo: Vídeo Formato: 406 MB. Duration: 00:29:23
EN_US
Relevância na Pesquisa
37.92%
In large measure, the vision of making it easier to create and use 3D spatial data has been achieved through The Extensible 3D (X3D) Earth project. This project created a standards-based 3D visualization infrastructure for visualizing all manner of real-world objects and information constructs in a geospatial context. The ability to archive models using stable commercial tools and noncommercial international standards ensures that 3D work can remain accessible and repeatable for many years to come. In this presentation we shall describe how we leveraged the NPS Supercomputer 'hamming' to defray the huge investment involved in the project through server-side preparation of content, interlocking/addressable URL schemes, ability to add new X3D Earth content, ability to efficiently mirror resources, streaming of relevant X3D Earth data, etc. over high-performance networks such as CENIC.

X3D Interoperability and X3D Progress, Common Problems versus Stable Growth [video]

Tourtelotte, Dale R.; Brutzman, Don
Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Tipo: Vídeo Formato: 406 MB. Duration: 00:29:23
Relevância na Pesquisa
38.02%
In large measure, the vision of making it easier to create and use 3D spatial data has been achieved through The Extensible 3D (X3D) Earth project. This project created a standards-based 3D visualization infrastructure for visualizing all manner of real-world objects and information constructs in a geospatial context. The ability to archive models using stable commercial tools and noncommercial international standards ensures that 3D work can remain accessible and repeatable for many years to come. In this presentation we shall describe how we leveraged the NPS Supercomputer 'hamming' to defray the huge investment involved in the project through server-side preparation of content, interlocking/addressable URL schemes, ability to add new X3D Earth content, ability to efficiently mirror resources, streaming of relevant X3D Earth data, etc. over high-performance networks such as CENIC.

Matlab and Simulink Creation and Animation of X3D in Web-Based Simulation

Cheng, YuanPin; Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
37.79%
The article of record as published may be located at http://dx.doi.org/10.1145/2775292.2778306; Matlab is a powerful tool to compute high-fidelity engineering model and plot the result in figures. Simulink implements Matlab .m source code into block diagrams and flow charts to execute the simulation. This project demonstrates how physics equations implemented in Simulink can animate X3D or VRML models, along with the methods to convert Matlab .fig format into an X3D object so we can apply it into Web-based animations.

Advanced Data Visualization in Astrophysics: the X3D Pathway

Vogt, F. P. A.; Owen, C. I.; Verdes-Montenegro, L.; Borthakur, S.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 09/10/2015
Relevância na Pesquisa
28.2%
Most modern astrophysical datasets are multi-dimensional; a characteristic that can nowadays generally be conserved and exploited scientifically during the data reduction/simulation and analysis cascades. Yet, the same multi-dimensional datasets are systematically cropped, sliced and/or projected to printable two-dimensional (2-D) diagrams at the publication stage. In this article, we introduce the concept of the "X3D pathway" as a mean of simplifying and easing the access to data visualization and publication via three-dimensional (3-D) diagrams. The X3D pathway exploits the facts that 1) the X3D 3-D file format lies at the center of a product tree that includes interactive HTML documents, 3-D printing, and high-end animations, and 2) all high-impact-factor & peer-reviewed journals in Astrophysics are now published (some exclusively) online. We argue that the X3D standard is an ideal vector for sharing multi-dimensional datasets, as it provides direct access to a range of different data visualization techniques, is fully-open source, and is a well defined ISO standard. Unlike other earlier propositions to publish multi-dimensional datasets via 3-D diagrams, the X3D pathway is not tied to specific software (prone to rapid and unexpected evolution)...