Recent Development of Dual-Dictionary Learning Approach in Medical Image Analysis and Reconstruction

Figure 3

(a) CT image; (b) corresponding MRI image; (c) the first-order gradient of CT; (d) the first-order gradient of MRI; (e) CT and MRI images subtraction; (f) gradient images subtraction. (a) and (b) are obtained from Visible Human Project  http://www.nlm.nih.gov/research/visible/visible_gallery.html.

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