A Weighted Two-Level Bregman Method with Dictionary Updating for Nonconvex MR Image Reconstruction

Algorithm 2

WTBMDU.

(1) Initialization: , , , , ,

(2) While For do

(3)    

(4)    While do

(5)    While stop criterion not satisfied (loop in ) do

(6)     

(7)     If Reweighted

(8)      

(9)     ElseIf Reweighted

(10)      

(11)      End (If)

(12)    End (While)

(13)    , , ,

(14)    update by frequency interpolation using ,

     and

(15)    

(16)    End (While)

(17)    

(18) End (While)