Method comparison. Segmentation results were obtained by DDLS, SRC, and the patch-based method for the subjects from the ADNI data set, with the best-case, median, and worst-case Dice coefficient results depicted. Abbreviations: ADNI, Alzheimer’s Disease Neuroimaging Initiative; DDLS, discriminative dictionary learning for segmentation; SRC, sparse representation classification. Figure adapted from Reference 76 with permission from Elsevier.