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

Author

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

Author_Institution

Dept. of Mech. Eng., Heriot-Watt Univ., Edinburgh, UK

Volume

27

Issue

6

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

851

Lastpage

860

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.

Keywords

CAD/CAM; computational geometry; edge detection; mechanical engineering computing; splines (mathematics); B-spline surface; depression feature; edge based identification; free-form solids; geometric model; mechanical CAD/CAM; protrusion feature; CADCAM; Computer aided manufacturing; Geometry; Machining; Partitioning algorithms; Pattern recognition; Solid modeling; Spline; Surface reconstruction; Surface topography; CAD; CAM; CAPP.; Index Terms- Three-Dimensional geometric feature recognition; geometric modeling; Algorithms; Artificial Intelligence; Computer-Aided Design; Equipment Design; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Information Storage and Retrieval; Pattern Recognition, Automated;

fLanguage

English

Journal_Title

Pattern Analysis and Machine Intelligence, IEEE Transactions on

Publisher

ieee

ISSN

0162-8828

Type

jour

DOI

10.1109/TPAMI.2005.118

Filename

1424455