Extraction of Visual Language and Development of a Shape Design System with the Visual Language

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(1)Extraction of Visual Language and an Automatic Fairing SystemWe analyzed a lot of curves drawn by designers, extracted visual language, and systematized the visual language. We proposed a method for measuring a clay model of a car using a non-contact type 3D measuring equipment, and a method for extracting visual language from the measurement data. We also proposed a method for constructing whole shape using the combination of the elements of the visual language. On the bases of these results, a prototype of a system for creating curves using the visual language was proposed. This system gives curves intended by designer in a short time, and it was clarified that this system was a good tool for reverse engineering.(2)Optimum Segmentation of CurvesWe proposed a method for segmenting a complex curve automatically by considering the segmentation problem as a problem of determining good knots of a spline. In order to treat data with cusps or jump, we improved the method so that we can treat multiple knots. The method was applied for a problem that obtains a curve model from measurement data of a clay model of a car, and a good result was obtained. We also survey many methods of data fitting, and discussed them in a survey paper.(3)Extraction of a Cognitive Geometry and its Application for PrimitivesWe analyzed face structure of primitives and polyhedrons, and we systematized the extracted polyhedrons as a visual language.(4)Measurement of a 3D Object and its 3D modelingWe measured shape and texture of a stuffed specimen of a Japanese wolf preserved at Wakayama University using a non-contact type 3D measuring equipment. Using the data, a 3D digital model of the stuffed specimen was made, and a virtual museum of Japanese wolf was constructed.