| Summary: | 碩士 === 國立台灣工業技術學院 === 機械工程技術研究所 === 85 === Reverse engineering is widely applied at the initial stage
ofproduct development, particularly in case of products that are
highly style- or vision-motivated. It starts with transforming
the surface of an object, either a clay model or a physical
product, into a series of point coordinates. The point data
then become input into a CAD system and, based on the techniques
of curve- and surface-fitting, a geometric model, in the form of
surface or solid, for the product is built. It follows in
immediate sequence to analyze and modify geometry of the part
until an optimum model emerges.
The very first step in overall reverse engineering is to
acquire point data. The fineness and correctness of the data
significantly affects the quality of the final CAD model.
Therefore, it is highly in question as how to acquire better-
structured point-data or how to adjust and edit them. This
thesisattempts to apply the concept of minimum energy to control
the curvature of curves, so as to smooth curve segments off
convex orconcave shapes and to achieve a well-furnished curve.
It is even probable to further control curves* curvature in
order to obtain sspecial curves in need.
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