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. Author manuscript; available in PMC: 2015 Aug 6.
Published in final edited form as: Inf Process Med Imaging. 2015;24:411–423. doi: 10.1007/978-3-319-19992-4_32

Fig. 2.

Fig. 2

(a) Wasserstein distance matrix encoded in a gray image. The distance is normalized from 0 to 1, where 0 indicates black and 1 indicates white. The results show that, mostly, two surfaces in the same class induce smaller Wasserstein distance, yet two surfaces in different classes induce larger Wasserstein distance. (b) Cross-validation curve.