Tese de Mestrado. Tecnologia Multimédia. Faculdade de Engenharia. Universidade do Porto. 2007

Made available in DSpace on 2016-06-02T19:05:33Z (GMT). No. of bitstreams: 1 2407.pdf: 1338607 bytes, checksum: f6463704ee2c6b822e0fcb6f5c087cf0 (MD5) Previous issue date: 2005-05-31 / Financiadora de Estudos e Projetos / 3D Collaborative Virtual Environments (CVE) applications have been impelled mainly by the computer games industry, military and industrial training and product design development. However, most of the existing systems are focused on specific tasks and have a supporting structure, which is closely tight to the application. As a consequence, a change in the application usually means a change in the supporting structure too, making it difficult and expensive to develop new or to extend existing CVEs. This work presents a novel approach to building and extending CVEs through the integration of interactive non-linear stories and Virtual Reality. With this approach, CVEs applications are composed as non-linear stories which can be changed either completely or partly, making it easier for developers to build and/or extend CVEs applications, such as highly dynamic marketing campaigns to 3D virtual shops, customized training courses, educational and entertainment games, etc. To allow the description of the CVE through interactive non-linear stories was developed a description language based on XML, named VEML. The use of a VEML for building a CVE application can facilitate the communication among the different professionals involved in the building of complex VE applications. / Ambientes Virtuais Colaborativos (AVCs) Tridimensionais têm sido desenvolvidos principalmente pelas indústrias de jogos de computador, treinamento militar e industrial e desenvolvimento de protótipos. Entretanto, muitos dos sistemas existentes são focados em aplicações específicas e tem uma arquitetura de suporte intimamente ligada à aplicação. Como conseqüência disto, alterações na aplicação geralmente implicam em alterações nesta arquitetura de suporte também, tornando difícil e custoso desenvolver-se ou estender AVCs existentes. Este trabalho apresenta uma nova abordagem para construção e extensão de AVCs através da integração de estórias interativas não lineares e Realidade Virtual. Com esta abordagem, as aplicações de AVCs são especificadas como estórias não lineares que podem ser alteradas parcial ou completamente, tornando fácil aos desenvolvedores construir ou estender aplicações de AVCs, tais como campanhas dinâmicas de shoppings virtuais, cursos padronizados de treinamento, jogos educacionais e de entretenimento, etc. Para permitir a descrição de AVCs como estórias não lineares foi desenvolvido uma linguagem de descrição baseada em XML, chamada VEML. O uso do VEML para construção de AVCs pode facilitar a comunicação entre os diferentes profissionais envolvidos na construção de aplicações complexas de AVC.

Orientador: Milton Terumitsu Sogabe / Banca: Mirian Celeste Ferreira Dias Martins / Banca: Lúcio Agra / ABSTRACT: The idea of this paper is to propose an art study possibility helped by the computer connected to the web, using communication technologies and virtual reality simulation, checking on VRML language as a tool for creation, by simulation, of environments in 3D virtual reality to study some particular art aspects such as the 3D perception and putting together the main results, obtained from many different researches on the usage of VRML and its educational application, aiming to achieve the dimension of this possibility. I intend, as the main objective of the research, to study the VRML language as a support tool to optimize the construction on the art knowlegment. This proposal has, as the idea of an application, the development of a bigger concept comprehension in art's studies and still the learning of arts, on distance learning, through the experiences in art appreciation and sensorial involvement using virtual reality by the VRML language to promote the simulation e reproduction of visual master pieces in virtual reality and so on. This proposal doesn't intend to be an idea on the replacement of teachers and tutors on teaching and learning of virtual arts, quite the opposite, the idea is to offer access to materials in a different way and to a bigger number of people, through the anytime / anywhere possibilities of learning that are available on the distance learning digital technologies by the using of computers connected to the web, called e-learning. Basically, the paper is divided in three parts. 1. To propose the art study couting n the computer, communication techonologies and virtual reality simulation, 2. To research the VRML language as a tool to create the environment in virtual reality to study the 3D representation, and. 3. To put together the results already otained in many researches about the usage of VRML language its educational applicability, to get tlhe dimension of this proposal. / Mestre

Made available in DSpace on 2014-06-11T19:22:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-03-28Bitstream added on 2014-06-13T19:27:56Z : No. of bitstreams: 1 ralha_jlfs_me_ia.pdf: 4593338 bytes, checksum: eb5cc0fb4a2864d102a098931929ade3 (MD5) / The idea of this paper is to propose an art study possibility helped by the computer connected to the web, using communication technologies and virtual reality simulation, checking on VRML language as a tool for creation, by simulation, of environments in 3D virtual reality to study some particular art aspects such as the 3D perception and putting together the main results, obtained from many different researches on the usage of VRML and its educational application, aiming to achieve the dimension of this possibility. I intend, as the main objective of the research, to study the VRML language as a support tool to optimize the construction on the art knowlegment. This proposal has, as the idea of an application, the development of a bigger concept comprehension in art's studies and still the learning of arts, on distance learning, through the experiences in art appreciation and sensorial involvement using virtual reality by the VRML language to promote the simulation e reproduction of visual master pieces in virtual reality and so on. This proposal doesn't intend to be an idea on the replacement of teachers and tutors on teaching and learning of virtual arts, quite the opposite, the idea is to offer access to materials in a different way and to a bigger number of people, through the anytime / anywhere possibilities of learning that are available on the distance learning digital technologies by the using of computers connected to the web, called e-learning. Basically, the paper is divided in three parts. 1. To propose the art study couting n the computer, communication techonologies and virtual reality simulation, 2. To research the VRML language as a tool to create the environment in virtual reality to study the 3D representation, and. 3. To put together the results already otained in many researches about the usage of VRML language its educational applicability, to get tlhe dimension of this proposal.