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. 2012 Jul 30;12(8):10228–10247. doi: 10.3390/s120810228

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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 8. — (a) First image of the pair; (b) second image of the pair rotated 21° counterclockwise, scaled 1.02 times the size of the original image and shifted 20 pixels in both the x and the y directions.