Portuguese Meeting on Computer Graphics 2006
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Browsing Portuguese Meeting on Computer Graphics 2006 by Author "Fonseca, Manuel J."
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Item Above and Beyond: Outer Space as a Metaphor for Document Browsing and Visualization(The Eurographics Association, 2021) Gonçalves, Daniel P.; Bilo, Luís; Gonçalves, Daniel; Fonseca, Manuel J.; Jorge, Joaquim A.; Chambel, Teresa and Nunes, Nuno and Romao, Teresa and Creissac Campos, JoséCurrently, any ordinary user has hundreds or even thousands of electronic documents stored on his computer. Usually, those documents are archived using an hierarchically-organized file system, making their retrieval at a later time a difficult task. In this paper we present a novel approach for document browsing and visualization based on the Outer Space metaphor. While users ”travel” from galaxies to planets and their satellites, the search criteria become narrower eventually allowing users to find their documents. With our approach, users can find a specific file in no more than four clicks. We developed a preliminary prototype, using a user centered approach, through the development of low-fidelity prototypes and heuristic evaluations.Item Interior Design Tool for Common Users(The Eurographics Association, 2021) Ferreira, Alfredo; Medeiros, Roberto; Barreto, Rui; Fonseca, Manuel J.; Jorge, Joaquim A.; Chambel, Teresa and Nunes, Nuno and Romao, Teresa and Creissac Campos, JoséUntil recently, computer simulation of interior decoration was reserved to architects and other highly skilled professionals, because existing tools require technical knowledge on computer aided design. During the last years, several easy-to-use tools for home planning and interior design have been released. These tools intend to allow users, without specific skills, to create their virtual house, decorate it and navigate in the resulting scenery. In this paper we present three of these applications and describe task analysis using them. As a result of this experiment, we identify user requirements for this kind of tools, along with positive and negative aspects, providing good insights and directions for future work.Item JavaSketchIt2 – Using Relational Adjacency Grammars for Visual Syntax Parsing(The Eurographics Association, 2021) Pereira, Filipe M. Garcia; Fonseca, Manuel J.; Jorge, Joaquim A.; Chambel, Teresa and Nunes, Nuno and Romao, Teresa and Creissac Campos, JoséThis paper presents a project which expands on JavaSketchit [8], which parsed sketches of user interfaces, iden- tifying gestures by using CALI [6], and then used topological relations and relational constraints [4] to recog- nize pairs of gestures as widgets in a Java graphical user interface. JavaSketchit was able to export the func- tional source code for the prototype in Java. Our approach allows users to write down their own visual lan- guage and removes the existing limitation of one pair of gestures per widget. The resulting parser became ap- plicable in different contexts besides designing user interfaces. The result is a functional implementation of a parser designed to handle Relational Adjacency Grammars customized by the user..Item Multi-Modal Painter: Pintar Usando as Mãos e Fala(The Eurographics Association, 2021) Cerejo, Mariana; Santos, José; Ferreira, Alfredo; Fonseca, Manuel J.; Jorge, Joaquim A.; Chambel, Teresa and Nunes, Nuno and Romao, Teresa and Creissac Campos, JoséNos últimos anos várias equipas de investigação têm vindo a desenvolver um novo paradigma de interacção entre humanos e computadores, procurando reduzir ou eliminar totalmente a necessidade de manuseamento de dispositivos físicos para controlar a máquina. O trabalho aqui apresentado foca a integração de reconhecimento de gestos e fala para controlo de aplicações. Para validarmos esta integração desenvolvemos uma aplicação multi-modal que consiste numa ferramenta de desenho 2D. Com esta aplicação o utilizador pode desenhar e pintar utilizando apenas gestos e comandos de fala.