Details

Autor(en) / Beteiligte

• Jidesh, P.
• Holla, Shivaram

Titel

Non-local total bounded variation scheme for multiple-coil magnetic resonance image restoration

Ist Teil von

• Multidimensional systems and signal processing, 2018-10, Vol.29 (4), p.1427-1448

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this paper, we design a variational model for restoring multiple-coil magnetic resonance images (MRI) corrupted by non-central Chi distributed noise. The energy functional corresponding to the restoration problem is derived using the maximum a posteriori (MAP) estimator. Optimizing this functional yields the solution, which corresponds to the restored version of the image. The non-local total bounded variation prior is being used as the regularization term in the functional derived using the MAP estimation process. Further, the split-Bregman iteration scheme is being followed for fast numerical computation of the model. The results are compared with the state of the art MRI restoration models using visual representations and statistical measures.