Browsing by Author "Dias, Filipe"

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    A Graph-Matching Approach to Sketch-Based Modeling
    (The Eurographics Association, 2021) Dias, Filipe; Jorge, Joaquim; Lopes, Adriano
    Automobile designers, when creatively designing a vehicle, have to bind by several shape constraints while also exploring new concepts. A natural and unhindered modelling environment for a designer to start modelling in is thus desired. We present our ongoing modelling system, AutoMake, that enables calligraphic modelling of a simple 3D object that resembles the body shape of a car. Our system provides an innovative way to recognize 3D objects by matching sketches against templates stored in a database, indexed by multiple edge graphs based on various views. Our approach enables users to specify a bounding box providing perspective and size information about model. The user next sketches a model that is matched against a template, using a multidimensional indexing structure.
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    Task Analysis and Scenario-Based Design of Calligraphic Interfaces
    (The Eurographics Association, 2021) Dias, Filipe; Fonseca, Manuel; Jorge, Joaquim; Marcos, Adérito and Mendonça, Ana and Leitão, Miguel and Costa, António and Jorge, Joaquim
    The great functionality of today's CAD systems enables the manufacturing of very complex models. Yet, great part of this power is unusable, early in the design process. As well, we have found two different approaches in two different car designers that surprisingly lead to the same long time in development. In this paper we identify the reasons for these problems, and propose a solution that bridges the different worlds of conceptual and geometric models, using the affordability of the calligraphic interface. Creating a prototype by drawing it allows impossible situations to be immediately identified and corrected, without further communication overheads, certifying that emotional drawing ideas correspond to the designer's intents.