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    A Virtual Collaborative Learning Environment
    (The Eurographics Association, 2022) Ficheman, Irene Karaguilla; Lopes, Roseli de Deus; Krüger, Susana Ester; Xavier Pueyo; Manuel Próspero dos Santos; Luiz Velho
    This paper presents a virtual learning environment developed for music education and includes both individual and collaborative interactive environments. This learning environment is a music composition edutainment software, which is being developed in collaboration between the University of São Paulo, Laboratório de Sistemas Integráveis (LSI) da Escola Politécnica da Universidade de São Paulo (USP) and the São Paulo State Orchestra, Coordenadoria de Programas Educacionais da Orquestra Sinfónica do Estado de São Paulo (OSESP). Recent research in music education as well as new computer and telecommunication technologies are being applied in arder to offer creative virtual learning environments to the students and offer pedagogical toais to the teachers.
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    Powering Multiprojection lmmersive Environments with Clusters of Commodity Computers
    (The Eurographics Association, 2022) Soares, Luciano Pereira; Cabral, Márcio Calixto; Bressan, Paulo Alexandre; Lopes, Roseli de Deus; Zuffo, Marcelo Knörich; Xavier Pueyo; Manuel Próspero dos Santos; Luiz Velho
    Multiprojection lmmersive Environments are used in many fields such as science, engineering and art. Virtual Reality (VR) oriented systems have been powered traditionally by high-end graphics workstations or supercomputers but recently, clusters of commodity computers (PCs, Macintoshes, low cost workstations) have become a practical alternative. The advantages of a commodity cluster include low cost, flexibility, access to technology, and performance scalability. ln this paper we describe the family of graphics clusters developed to power Multiprojection lmmersive Environments. Design issues and results are presented considering the CAVERNA DigitalTM, the first five-sided cubic Multiprojection lmmersive Environment implemented in South America.
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    Towards Fully Reconfígurable Multimedia Platforms
    (The Eurographics Association, 2022) Poz, Marco A. S. Dai; Leitão, Ricardo B. Vidigal; Faria, Regis Rossi Alves; Lopes, Roseli de Deus; Zuffo, Marcelo Knörich; Xavier Pueyo; Manuel Próspero dos Santos; Luiz Velho
    This paper describes a novel approach to implement multimedia access platforms: reconfigurable oriented codesign. Nowadays we observe a rapid and mutant evolution of multimedia standards and its de facto adoption into many consumer electronics, such as audiolvideo appliances, digital set-top boxes for TV access networks, mobile technologies and portable digital assistants (PDAs). Among the disadvantages of current multimedia access platforms, we can mention the relative high cost, the very short obsolescence cycles, the communication and computational performance limitations, the large sizes of software components, and system architectures that do not match future multimedia standards requirements. To overcome these, we propose the use of a reconfigurable computing architecture to implement a family of multimedia access platforms. As an example, we present an implementation of a multimedia access platform that runs a web browser (HTML 3.2 compatible) over a 32-bit RISC microprocessor, described using less than 256 Kbytes of data to represent software and hardware components on a FPGA (Field Programmable Gate Array).