Anisotropic total variation minimization approach in in-line phase-contrast tomography and its application to correction of ring artifacts
Ji Dong-Jiang1, 2, Qu Gang-Rong1, 3, †, Hu Chun-Hong4, Liu Bao-Dong5, 6, 7, Jian Jian-Bo8, Guo Xiao-Kun9
       

Reconstructed images using different methods for comparison (a) SART, (b) SART-isotropic TV, (c) SART-anisotropic TV, and the corresponding difference images for (d) the difference between SART and SART, (e) the difference between SART and isotropic TV, and (f) the difference between SART and anisotropic TV.