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Abstract: Vehicle cover panel surface is a kind of complicated 3D
free surface. The surface under the primary inertia axes coordinate
system is proposed. Under the proposed coordinate system, the surface
equation will keep invariant when the surface is translated or rotated.
After extracting the surface’s outline projection curve and section
curves, the curve’s feature vectors with a reformed invariant moment
method are calculated. At last, the similarity between two surfaces is
figured out based on the similarity between the section curves.
Key words: Intelligent CAD CBR Surface style recognition
Invariant moment
CLC No: TG335.81
国家杰出青年科学基金(10125208)、国家自然科学重点项目基金(19832020)和教育部重点科技攻关课题(99034)资助项目.
Received 20020830, received in revised form 20021028
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