Feature extraction of concave and convex regions and their intersections

@article{Lentz1993FeatureEO,
  title={Feature extraction of concave and convex regions and their intersections},
  author={David H. Lentz and Robert Sowerby},
  journal={Computer-Aided Design},
  year={1993},
  volume={25},
  pages={421-437}
}
A feature representation for sheet-metal parts is briefly reviewed. The properties of general concave and convex regions of a sheet-metal component, with some types of intersections of such regions, are considered. An algorithm for the extraction of such regions from a CAO B-rep model is then outlined. An order of creation of the regions during processing is also determined in most cases. Some application examples are outlined. 

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