Anisotropic total variation minimization approach in in-line phase-contrast tomography and its application to correction of ring artifacts

Ji Dong-Jiang^{1, 2}, Qu Gang-Rong^{1, 3, †}, Hu Chun-Hong⁴, Liu Bao-Dong^{5, 6, 7}, Jian Jian-Bo⁸, Guo Xiao-Kun⁹

(color online) Reconstructed images using different methods for comparison (a) SART, (b) SART-wavelet-FFT filter, (c) SART-anisotropic TV, and the corresponding magnified regions: (d) magnified ROI-I of SART, (e) magnified ROI-I of SART-wavelet-FFT filter, (f) magnified ROI-I of SART-anisotropic TV, (g) magnified ROI-II of SART, (h) magnified ROI-II of SART-wavelet-FFT filter, and (i) magnified ROI-II of SART-anisotropic TV.