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An approach of creating parametric solid models from scanned point cloud

Marazaki Ilektra

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Year 2014
Type of Item Diploma Work
Bibliographic Citation Ilektra Marazaki, "An approach of creating parametric solid models from scanned point cloud", Diploma Work, School of Production Engineering and Management, Technical University of Crete, Chania, Greece, 2014
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The aim of this thesis is the parametric reconfiguration of natural three-dimensional objects, using reverse engineering methods, in order to accurately reconstruct the geometric characteristics of an object so the user could exploit data with the help of three-dimensional software packages (CAD). Despite the fact that the process of converting point data into models of NURB surfaces has been automated, the creation of parametric solid models from point data can’t be fully automated. This is because, despite the technical challenges that arise in the implementation, the standard design intent embodied in the point data should be recovered and held in parametric solid model. Modeling decisions should be taken by the designer in order to recover the standard design intentions. However, designers should be relieved from the time-consuming handling of huge numbers of point data and the construction of primitive geometric entities. Therefore, the ideal scenario involves software tools which will settle the automated time-consuming tasks, such as managing the cloud points, the triangulation process, etc., and offer exceptional opportunities to enable the designer to fully recover, using interactive methods the initial design intent.The procedure followed, involves the selection and scanning of three dimensional objects, the cloud point acquisition procedure and the optimization of data points using the Next Engine Scanner and the Scan-Studio HD program. Moreover, further processing of the polygonal mesh is implemented through the Geomagic Studio 12 program and exported in a CAD program, to create a parametric solid model by parametric exchange program of three-dimensional CAD software (SolidWorks). This process has resulted in the integration of the design intent of the object, in the process of transition from an existing physical object in a three dimensional digital model, in order to create an editable and verifiable model based on standard features. This process produces a complete native CAD model that captures both the original shape of the object and the design intent of the designer. 

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