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Issue No. 06 - June (2005 vol. 27)
ISSN: 0162-8828
pp: 851-860
T. Lim , Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK
H. Medellin , Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK
C. Torres-Sanchez , Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK
J.R. Corney , Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK
J.M. Ritchie , Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK
J.B.C. Davies , Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK
ABSTRACT
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.
INDEX TERMS
Spline, Geometry, Machining, Computer aided manufacturing, Solid modeling, CADCAM, Partitioning algorithms, Surface topography, Surface reconstruction, Pattern recognition
CITATION

T. Lim, H. Medellin, C. Torres-Sanchez, J. Corney, J. Ritchie and J. Davies, "Edge-based identification of DP-features on free-form solids," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 27, no. 6, pp. 851-860, .
doi:10.1109/TPAMI.2005.118
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