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Edge-based identification of DP-features on free-form solids

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6 Author(s)
Lim, T. ; Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK ; Medellin, H. ; Torres-Sanchez, C. ; Corney, J.R.
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Numerous applications in mechanical CAD/CAM need robust algorithms for the identification of protrusion and depression features (DP-features) on geometric models with free-form (B-spline) surfaces. This paper reports a partitioning algorithm that first identifies the boundary edges of DP-features and then creates a surface patch to cover the depressions or isolate the protrusions. The novelty of the method lies in the use of tangent continuity between edge segments to identify DP-feature boundaries that cross multiple faces and geometries.

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:27 ,  Issue: 6 )