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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 Português
Relevância na Pesquisa
17.074757%
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.

VEPersonal uma infra-estrutura para geração e manutenção de ambientes virtuais adaptativos

Salerno de Aquino, Marcus; César Frery Orgambide, Alejandro (Orientador)
Fonte: Universidade Federal de Pernambuco Publicador: Universidade Federal de Pernambuco
Tipo: Outros
Português
Relevância na Pesquisa
17.074757%
Os avanços das técnicas de Realidade Virtual têm contribuído para que os Ambientes Virtuais se tornem mais dinâmicos e mais realistas. Além disso, essas técnicas são importantes para tornar tais sistemas mais próximos da realidade dos usuários. Técnicas para geração de ambientes virtuais que se adaptam ao perfil do usuário têm sido desenvolvidas, incorporando procedimentos de acompanhamento de ações e modificando o ambiente em função deste comportamento. Esta tese apresenta o sistema VEPersonal (Personalized Virtual Environment), uma infra-estrutura para gerenciamento de componentes de realidade virtual, que permite adaptar ambientes virtuais, em tempo real, em função do nível de conhecimento do usuário ou de suas necessidades. Tais componentes são armazenados em um SGBD com suporte a XML para permitir a reutilização na construção de novos mundos virtuais. Cada objeto do mundo pode conter vários níveis de informação que são apresentados ao usuário de acordo com o seu nível de conhecimento ou a sua capacidade de aprendizado. Uma sociedade de agentes monitora as ações do usuário, calcula as atualizações necessárias e determina quais objetos e qual o nível de detalhes devem ser apresentados ao mundo virtual do usuário corrente. Um modelo do usuário e um modelo do ambiente mantêm informações atualizadas sobre o perfil do usuário e o ambiente utilizado...

A dynamic three-dimensional network visualization program for integration into cyberciege and other network visualization scenarios

Coomes, Donald E.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xvi, 117 p. : ill. (chiefly col.) ;
Português
Relevância na Pesquisa
17.852792%
Detailed information and intellectual understanding of a network's topology and vulnerabilities is invaluable to better securing computer networks. Network protocol analyzers and intrusion detection systems can provide this additional information. In particular, game-based trainers, such as CyberCIEGE, have been shown to improve the level of training and understanding of network security professionals. This thesis' objective is to enhance these applications by developing NTAV3D, or, Network Topology and Attack Visualizer (Three Dimensional). NTAV3D is a tool that displays network topology, vulnerabilities, and attacks in an interactive, three dimensional environment. This augments the design and gameplay of CyberCIEGE by increasing gameplayer interaction and data display. Additionally, NTAV3D can be expanded to provide this capability to network analysis and intrusion detection tools. Furthermore, NTAV3D expands on ideas and results from related work of the best ways to visualize network topology, vulnerabilities, and attacks. NTAV3D was created using open-source software technologies including Xj3D, X3D, Java, and XML. It is also one of the first applications to be built with only the Xj3D toolkit. Therefore, the development process allowed evaluation of these technologies...

3D visualization of an invariant display strategy for hyperspecteral imagery; Three-dimensional visualization of an invariant display strategy for hyperspecteral imagery

Kim, Kang Suk
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xvi, 88 p. : ill. (some col.)
Português
Relevância na Pesquisa
28.260332%
Approved for public release, distribution is unlimited; Spectral Imagery provides multi-dimensional data, which are difficult to display in standard three-color image formats. Tyo, et al. (2001) propose an invariant display strategy to address this problem. This approach is to mimic the dynamics of human perception. The dimensionality of the data are reduced by using a Principal Component (PC) transformation, and then displayed by making used of a Hue, Saturation, and Value (HSV) display transform. This study addresses the PC transformation strategy , looks for a global eigenvector via 3D visualization of HSV color space information, and examines the suggested algorithm to provide the most intuitive display. The user interface created in this thesis is capable of computing the necessary implementation of the proposed strategy, viewing selected Region of Interest (ROI) in HSV color space model in 3D, and viewing the 2D resultant image. A demonstration application uses Java language including Java2D, Xj3D Player, Document Object Model (DOM) Application Program Interfaces (API), and Extensible 3D Language (X3D). The Java2D API enables the user to load imagery, process data, and render results in a two-dimensional (2D) view. Xj3D and DOM APIs are introduced to visualize Tyo's invariant display strategy in three-dimensional (3D) views and then to save results as X3D scenes. These techniques appear to be inherently valuable and can serve as the basis for further research. Through this thesis...