Adaptive Graph-Based Total Variation for Tomographic Reconstructions Mahmood, Faisal ; Shahid, Nauman ; Skoglund, Ulf ; Vandergheynst, Pierre Abstract Publication: IEEE Signal Processing Letters Pub Date: May 2018 DOI: 10.1109/LSP.2018.2816582 Bibcode: 2018ISPL...25..700M