@inproceedings{FrikelBorgJorgensenetal., author = {Frikel, J{\"u}rgen and Borg, Leise and J{\o}rgensen, Jakob Sauer and Quinto, Eric Todd}, title = {Singular artifacts in incomplete data x-ray tomography}, series = {Tomographic Inverse Problems: Theory and Applications; 27.01. - 02.02.2019}, booktitle = {Tomographic Inverse Problems: Theory and Applications; 27.01. - 02.02.2019}, editor = {Burger, Martin and Hahn, Bernadette and Quinto, Eric Todd}, issn = {1660-8941}, doi = {10.4171/OWR/2019/4}, pages = {295 -- 297}, language = {en} } @inproceedings{BorgJorgensenFrikeletal., author = {Borg, Leise and J{\o}rgensen, Jakob Sauer and Frikel, J{\"u}rgen and Quinto, Eric Todd and Sporring, Jon}, title = {Reducing artifacts from varying projection truncations}, series = {3rd International Conference on Tomography of Materials and Structures, Lund, Sweden, 26-30 June 2017, ICTMS2017-65-1}, booktitle = {3rd International Conference on Tomography of Materials and Structures, Lund, Sweden, 26-30 June 2017, ICTMS2017-65-1}, abstract = {We study samples with full and partial occlusion causing streak artifacts, and propose two mod-ifications of filtered backprojection for artifact removal. Data is obtained by the SPring-8 synchrotron using a monochromatic parallel-beam scan [1]. Thresholding in the sinogram segments the metal, resulting in edges on which we apply 1) a smooth transition, or 2) a Dirichlet boundary condition.}, language = {en} }