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. 2012 Mar 15;12(3):3627–3640. doi: 10.3390/s120303627

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© 2012 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 1. — Finger-vein image acquisition system. (a) NIR light transillumination. (b) A homemade finger-vein imaging device. (c) ROI extraction proposed in [4].