. Author manuscript; available in PMC: 2018 Jan 30.
Published in final edited form as: Pattern Recognit Lett. 2016 Dec 19;86:76–81. doi: 10.1016/j.patrec.2016.12.012
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).