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Lü Zhen
Ke Yinglin
Sun Qing
College of Mechanical and
Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Kelvin Wi
Huang Xiaoping
General Electric China
Technology Center, Shanghai 200233, China |
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METHOD TO EXTRACT BLEND
SURFACE FEATURE IN REVERSE
ENGINEERING*
Abstract: A new method of extraction of blend surface feature is presented. It contains two steps: segmentation and recovery of parametric representation of the blend. The segmentation separates the points in the blend region from the rest of the input point cloud with the processes of sampling point data, estimation of local surface curvature properties and comparison of maximum curvature values. The recovery of parametric representation generates a set of profile curves by marching throughout the blend and fitting cylinders. Compared with the existing approaches of blend surface feature extraction, the proposed method reduces the requirement of user interaction and is capable of extracting blend surface with either constant radius or variable radius. Application examples are presented to verify the proposed method.
Key words:
Reverse engineering Segmentation Blend surface Feature extraction |