Edge-based identification of DP-features on freeform solids

T.C. Lim, H. Medellin, C. Torres-Sanchez, J.R. Corney, J.M. Ritchie, J.B.C. Davies

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)851-860
Number of pages10
JournalIEEE Transactions on Pattern Analysis and Machine Intelligence
Issue number6
Publication statusPublished - 2005


  • Three-Dimensional geometric feature recognition
  • geometric modeling
  • CAD
  • CAM
  • CAPP


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