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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Med Image Anal. 2014 Feb 17;18(3):542–554. doi: 10.1016/j.media.2014.02.003

Figure 6.

Figure 6

First three eigenvectors for cortical (top) and periventricular (bottom) patches. Leftmost, sample image patch from the training set; from left to right, the most significant eigenvectors in order of significance. The eigenvectors for the cortical patches explain 32.5, 7.5 and 5.9 % of the total variation, those for the periventricular patches explain 34.9, 11.2 and 6.3 % of the total variation. The colormap is stretched to the min. and max. values of each eigenvector for visualization purposes.