Sparse-Representation-Based Direct Minimum 𝐿^𝑝-Norm Algorithm for MRI Phase Unwrapping

Figure 3

A 257×257 noisy phase dataset with shear, (a) its wrapped phase, and (b) its residue distribution including 150 residues. Unwrapped phase image using the (c) SDM𝐿^𝑃, (d) conventional minimum 𝐿^𝑝-norm, (e) PUMA, and (f) PHUN methods.

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