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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: Comput Med Imaging Graph. 2014 Jan 25;38(4):306–314. doi: 10.1016/j.compmedimag.2014.01.002

Figure 1.

Figure 1

Illustration of the difference between the bidirectional correspondence and the unidirectional correspondence using two examples.