A Novel Boundary Extraction Algorithm on Triangular Meshes of STL Model

Yu Hui Peng; Cheng Hui Gao

doi:10.4028/www.scientific.net/AMR.97-101.2929

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101A Novel Boundary Extraction Algorithm on...

A Novel Boundary Extraction Algorithm on Triangular Meshes of STL Model

Abstract:

The generation of boundaries from the triangular meshes of CAD object is very important for successful surface segmentation and subdivision. Considering the characteristics of non-uniformity, sparseness and known facet normal for STL model, which is generated by a CAD system, a new and efficient approach for extracting boundaries on STL model is presented in this paper. Boundaries are classified into sharp feature edge and non-sharp feature edge embedded in the filleting and transitive region. The former is detected based on dihedral edge angle (angle between facets), while the latter is identified by analyzing intrinsic region properties of triangular facets distribution without curvature estimation. By means of unidirectional increment of feature edges, continuous region boundaries are generated. Successful examples are presented to illustrate the feasibility of the proposed algorithm.

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Periodical:

Advanced Materials Research (Volumes 97-101)

Pages:

2929-2934

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.97-101.2929

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Online since:

March 2010

Authors:

Yu Hui Peng, Cheng Hui Gao

Keywords:

Boundary Extraction, Feature Detection, STL Model, Triangular Mesh

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