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Issue No.07 - July (2012 vol.18)
pp: 1125-1134
Oscar Kin-Chung Au , The City University of Hong Kong, Hong Kong
Youyi Zheng , The Hong Kong University of Science and Technology, Hong Kong
Menglin Chen , The Hong Kong University of Science and Technology, Hong Kong
Pengfei Xu , The Hong Kong University of Science and Technology, Hong Kong
Chiew-Lan Tai , The Hong Kong University of Science and Technology, Hong Kong
ABSTRACT
This paper presents a simple and efficient automatic mesh segmentation algorithm that solely exploits the shape concavity information. The method locates concave creases and seams using a set of concavity-sensitive scalar fields. These fields are computed by solving a Laplacian system with a novel concavity-sensitive weighting scheme. Isolines sampled from the concavity-aware fields naturally gather at concave seams, serving as good cutting boundary candidates. In addition, the fields provide sufficient information allowing efficient evaluation of the candidate cuts. We perform a summarization of all field gradient magnitudes to define a score for each isoline and employ a score-based greedy algorithm to select the best cuts. Extensive experiments and quantitative analysis have shown that the quality of our segmentations are better than or comparable with existing state-of-the-art more complex approaches.
INDEX TERMS
Concavity-aware field, mesh segmentation, isolines.
CITATION
Oscar Kin-Chung Au, Youyi Zheng, Menglin Chen, Pengfei Xu, Chiew-Lan Tai, "Mesh Segmentation with Concavity-Aware Fields", IEEE Transactions on Visualization & Computer Graphics, vol.18, no. 7, pp. 1125-1134, July 2012, doi:10.1109/TVCG.2011.131
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