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. 2011 Feb 24;11(3):2319–2333. doi: 10.3390/s110302319

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© 2011 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 license (http://creativecommons.org/licenses/by/3.0/).

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Figure 6. — Example of simple binarization method. (a) Filtered finger image, (b) histogram of image in (a) and an automatically determined threshold, and (c) a resulting image after binarization using the threshold.