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. 2017 Oct 2;17(10):2262. doi: 10.3390/s17102262

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Measurement of distances between feature vectors of points in different regions and with different $k_{1}$ and $k_{2}$ neighborhood support. (a) PFH con $k_{1} = 15$ , $k_{2} = 45$ ; (b) PFH $k_{1} = 30$ , $k_{2} = 60$ ; (c) PFH $k_{1} = 45$ , $k_{2} = 75$ ; (d) FPFH $k_{1} = 15$ , $k_{2} = 45$ ; (e) FPFH $k_{1} = 30$ , $k_{2} = 60$ ; (f) FPFH $k_{1} = 45$ , $k_{2} = 75$ ; (g) MPFH $k_{1} = 15$ , $k_{2} = 45$ ; (g) MPFH $k_{1} = 30$ , $k_{2} = 60$ and (i) MPFH $k_{1} = 45$ , $k_{2} = 75$ .

Measurement of distances between feature vectors of points in different regions and with different $k_{1}$ and $k_{2}$ neighborhood support. (a) PFH con $k_{1} = 15$ , $k_{2} = 45$ ; (b) PFH $k_{1} = 30$ , $k_{2} = 60$ ; (c) PFH $k_{1} = 45$ , $k_{2} = 75$ ; (d) FPFH $k_{1} = 15$ , $k_{2} = 45$ ; (e) FPFH $k_{1} = 30$ , $k_{2} = 60$ ; (f) FPFH $k_{1} = 45$ , $k_{2} = 75$ ; (g) MPFH $k_{1} = 15$ , $k_{2} = 45$ ; (g) MPFH $k_{1} = 30$ , $k_{2} = 60$ and (i) MPFH $k_{1} = 45$ , $k_{2} = 75$ .