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Abstract: The
pure copying in reverse engineering (RE) has already been adapted to the
developing market no longer. The integration of RE and rapid prototyping
(RP) is gradually closed daily with the development of the compute
technique. The innovation of RE techniques is required during the
process of product’s designing and manufacturing. The synthetical
optimization is put forward: the scatter points got after scanning and
cicrcularities are triangulated, and the format of stereo lithography
file (STL) is created, the 2D optimization is realized with the method
of the least right and the method of the least internal angle becoming
maximum based on the specialty of the mesh and combined the peculiarity
of the circularity partition. The 3D optimization is fulfilled with
points adding according to the specialty of the mesh, and then the
deformation of the trian-gles after mapping onto 3D is avoided. With the
Boolean operation, the STL format of new product model is formed by
arbitrarily the entity’s integration and arbitrarily truncating of
entity. The 3D optimization is realized by shape control and other
treatments of new product model, therefore, the time and the cost of new
product development is reduced.
Key words: Reverse engineering (RE)
Rapid prototyping (RP)
Stereo lithography file(STL)
Mesh optimization
Boolean operation
CLC No: TB22
国家863计划(2002AA414110)和上海市“十五”重点科技攻关(021111126)资助项目. Received 20051104, received in revised form 20060706
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