Browsing by Author "Lupinetti, Katia"

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    A 3D CAD Assembly Benchmark
    (The Eurographics Association, 2019) Lupinetti, Katia; Giannini, Franca; monti, marina; PERNOT, Jean-Philippe; Biasotti, Silvia and Lavoué, Guillaume and Veltkamp, Remco
    Evaluating the effectiveness of the systems for the retrieval of 3D assembly models is not trivial. CAD assembly models can be considered similar according to different criteria and at different levels (i.e. globally or partially). Indeed, besides the shape criterion, CAD assembly models have further characteristic elements, such as the mutual position of parts, or the type of connecting joint. Thus, when retrieving 3D models, these characteristics can match in the entire model (globally) or just in local subparts (partially). The available 3D model repositories do not include complex CAD assembly models and, generally, they are suitable to evaluate one characteristic at a time and neglecting important properties in the evaluation of assembly similarity. In this paper, we present a benchmark for the evaluation of content-retrieval systems of 3D assembly models. A crucial feature of this benchmark regards its ability to consider the various aspects characterizing the models of mechanical assemblies.
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    Assembly Retrieval Results Inspection in Immersive Environment
    (The Eurographics Association, 2019) Lupinetti, Katia; Bonino, Brigida; Giannini, Franca; monti, marina; Fusiello, Andrea and Bimber, Oliver
    This poster presents a research aimed at supporting the browsing through the results of an assembly retrieval system by exploiting Virtual Reality technologies. To support the users' understanding during the assessing of the similarities of 3D assembly models, the proposed system exploits the three-dimensionality of the space to locate the retrieved models distributing them according to their dissimilarity to the model used as query. It also allows the users to interact with assemblies through voice and gesture commands, which resemble gestures well-established in touch user interfaces. Through them, users can see correspondences between assemblies, disassemble and re-assemble 3D digital models, such that it is possible a better inspection of the assembly components that is the first step for the development of systems allowing for their modifications and combinations.