Fig. 2From: Local sparsity enhanced compressed sensing magnetic resonance imaging in uniform discrete curvelet domainDictionary training. (a) MR T2wBrain_slice_27, (b) real part lowpass UDCT sub-band coefficients for DL, (c) initial dictionary from 8×8 sized coefficient patches and (d) trained dictionary of 64×100. Dictionary atoms are represented using 2 coefficients eachBack to article page