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Proceedings Paper

Robust sharp features infer from point clouds
Author(s): Juming Cao; Slam Wushour; Xinhui Yao; NaiQian Li; Jin Liang; Xinhe Liang; Jianwei Liu
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Paper Abstract

A novel sharp features extraction method is proposed in this paper. First, we calculate the displacement between the point and its local weighted average position and we label the point with salient this value as the candidate sharp feature points and we estimate the normal direction of those candidate sharp feature points by means of local PCA methods. Then we refine the normal estimated by inferring the orientation of the points near the candidate sharp feature region and bilateral filtering in the normal field of point clouds. At last we project the displacement between point and its local weighted average position along the direction of normal .We use value of this projection as the criteria of whether a point can be labeled as sharp feature. The extracted discrete sharp feature points are represented in the form of piecewised B-Spline lines. Experiment on both real scanner point clouds and synthesized point clouds show that our method of sharp features extraction are simple to be implemented and efficient for both space and time overhead as well as it robust to the noise ,outlier and un even sample witch are inherent in the point clouds.

Paper Details

Date Published: 21 June 2011
PDF: 9 pages
Proc. SPIE 8085, Videometrics, Range Imaging, and Applications XI, 808510 (21 June 2011); doi: 10.1117/12.890881
Show Author Affiliations
Juming Cao, Xi'an Jiaotong Univ. (China)
Slam Wushour, Xi'an Jiaotong Univ. (China)
Xinhui Yao, Baoji Univ. of Arts and Sciences (China)
NaiQian Li, Baoji Univ. of Arts and Sciences (China)
Jin Liang, Xi'an Jiaotong Univ. (China)
Xinhe Liang, Xi'an Jiaotong Univ. (China)
Jianwei Liu, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 8085:
Videometrics, Range Imaging, and Applications XI
Fabio Remondino; Mark R. Shortis, Editor(s)

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