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Average Dice ratios of the 24 patients obtained by using 1) the conventional label propagation strategy with intensity patch-based representation [31], [32], 2) label propagation with the proposed discriminant patch-based representation (DisPatch) in the feature space, 3) discriminant patch-based representation with sparse label propagation (Sparse + DisPatch), and 4) the proposed method by further enforcing the hierarchical labeling strategy.
