loading...
 This Article 
   
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
IEEE International Conference on Shape Modeling and Applications 2006 (SMI'06)
Segmenting Point Sets
Matsushima, Japan
June 14-June 16
ISBN: 0-7695-2591-1
Ichitaro Yamazaki, University of California, Davis, USA
Vijay Natarajan, University of California, Davis, USA
Zhaojun Bai, University of California, Davis, USA
Bernd Hamann, University of California, Davis, USA
Extracting features from point sets is becoming increasingly important for purposes like model classification, matching, and exploration. We introduce a technique for segmenting a point-sampled surface into distinct features without explicit construction of a mesh or other surface representation. Our approach achieves computational efficiency through a three-phase segmentation process. The first phase of the process uses a topological approach to define features and coarsens the input, resulting in a set of supernodes, each one representing a collection of input points. A graph cut is employed in the second phase to bisect the set of supernodes. Similarity between supernodes is computed as a weighted combination of geodesic distances and connectivity. Repeated application of the graph cut results in a hierarchical segmentation of the point input. In the last phase, a segmentation of the original point set is constructed by refining the segmentation of the supernodes based on their associated feature sizes.We apply our segmentation algorithm on laser-scanned models to evaluate its ability to capture geometric features in complex data sets.
Index Terms:
point sets, sampling, features, geodesic distance, normalized cut, spectral analysis, hierarchical segmentation.
Citation:
Ichitaro Yamazaki, Vijay Natarajan, Zhaojun Bai, Bernd Hamann, "Segmenting Point Sets," smi, pp.6, IEEE International Conference on Shape Modeling and Applications 2006 (SMI'06), 2006
Usage of this product signifies your acceptance of the Terms of Use.