Total Variation for 2D tomography

A quick Matlab Live Script tutorial using the library flexBox https://github.com/HendrikMuenster/flexBox by Hendrik Dirks. The Matrix for the Radon transform in the plane is made using AIRToolsII https://github.com/jakobsj/AIRToolsII Download the Matlab live script (.mlx) file from https://personalpages.manchester.ac.uk/staff/bill.lionheart/IPtut/ For more video lectures on 2D TV regularization using MATLAB see Samuli Siltanen's course https://www2.helsinki.fi/en/unitube/video/8ce15ee5-22f2-4c61-8016-a92665986c1a , also the excellent courses at DTU such as Jakob Sauer Jørgensen's https://www.coursera.org/lecture/cinemaxe/regularization-jakob-sauer-jorgensen-M6vyB introduction to advanced tomography. For an for more on the optimization problem one needs to solve for TV, the discretization of the x-ray computed tomography problem, and the idea of regularization so our book Hansen, Per Christian, Jakob Jorgensen, and William RB Lionheart, eds. Computed Tomography: Algorithms, Insight, and Just Enough Theory. Society for Industrial and Applied Mathematics, 2021. https://bookstore.siam.org/FA18