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. 2014 Apr 22;13:47. doi: 10.1186/1475-925X-13-47

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Copyright © 2014 Koprowski et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Graph of changes in the value of the criterion J as a function of Δm and Δn. Depending on the displacements of the points V₁ to V₅ (Δm and Δn), the value of the criterion J is calculated. One global minimum occurring for the displacements -18 and -3 pixels in the axis of rows and columns respectively is visible. This value provides information about the need to move the image of the patient so that it would better (with respect to the criterion J) match the pattern.