| Summary: | 碩士 === 國立中央大學 === 機械工程研究所 === 91 === ABSTRACT
Computer aid design (CAD) and Computer aid Manufacture (CAM) are extensively used in industry. At first we should use 3D scanning (the measurement and modeling of shape and other visual properties) to modeling a physical model into triangular model in reverse engineering, then construct a surface model from triangular model, and this thesis has a goal to discuss several methods to deal with triangular mesh, and accelerates step in turning triangular model to surface model. Therefore designing a data structure at first to process triangular mesh easily, and use this data structure to smooth triangular mesh, detect holes and patch holes in triangular model.
This thesis includes data structure, smooth, hole-detecting, hole-filling and decimation in triangular model. Use graphic node to build dynamic mesh data structure. and using this data structure to process triangular mesh. In smooth mesh, use mesh vertex projection to accomplish an intention. Using mesh edges to accomplish mesh hole-detecting. Use ear-cutting to do triangulation for hole-filling and take mesh normal difference to do mesh decimation.
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