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. Author manuscript; available in PMC: 2011 Jan 11.
Published in final edited form as: Med Image Comput Comput Assist Interv. 2010;13(Pt 2):570–577. doi: 10.1007/978-3-642-15745-5_70

Fig. 3.

Fig. 3

The evolution of the group mean image. Left panel shows several typical images from 18 elderly brains used in this experiment. In the right panel, the evolution of the conventional groupwise registration starting with a fuzzy mean (in blue box) and our method with a sharp mean (in red box) are displayed in the top and bottom rows, respectively.