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Graph."],"published-print":{"date-parts":[[2018,8,31]]},"abstract":"<jats:p>X-ray computed tomography (CT) is a valuable tool for analyzing objects with interesting internal structure or complex geometries that are not accessible with optical means. Unfortunately, tomographic reconstruction of complex shapes requires a multitude (often hundreds or thousands) of projections from different viewpoints. Such a large number of projections can only be acquired in a time-sequential fashion. This significantly limits the ability to use x-ray tomography for either objects that undergo uncontrolled shape change at the time scale of a scan, or else for analyzing dynamic phenomena, where the motion itself is under investigation.<\/jats:p>\n          <jats:p>In this work, we present a non-parametric space-time tomographic method for tackling such dynamic settings. Through a combination of a new CT image acquisition strategy, a space-time tomographic image formation model, and an alternating, multi-scale solver, we achieve a general approach that can be used to analyze a wide range of dynamic phenomena. We demonstrate our method with extensive experiments on both real and simulated data.<\/jats:p>","DOI":"10.1145\/3197517.3201298","type":"journal-article","created":{"date-parts":[[2018,7,31]],"date-time":"2018-07-31T15:56:23Z","timestamp":1533052583000},"page":"1-14","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":40,"title":["Space-time tomography for continuously deforming objects"],"prefix":"10.1145","volume":"37","author":[{"given":"Guangming","family":"Zang","sequence":"first","affiliation":[{"name":"King Abdullah University of Science And Technology, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ramzi","family":"Idoughi","sequence":"additional","affiliation":[{"name":"King Abdullah University of Science And Technology, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ran","family":"Tao","sequence":"additional","affiliation":[{"name":"King Abdullah University of Science And Technology, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gilles","family":"Lubineau","sequence":"additional","affiliation":[{"name":"King Abdullah University of Science And Technology, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Wonka","sequence":"additional","affiliation":[{"name":"King Abdullah University of Science And Technology, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wolfgang","family":"Heidrich","sequence":"additional","affiliation":[{"name":"King Abdullah University of Science And Technology, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2018,7,30]]},"reference":[{"key":"e_1_2_2_1_1","volume-title":"TRex: A Tomography Reconstruction Proximal Framework for Robust Sparse View X-Ray Applications. arXiv preprint arXiv:1606.03601","author":"Aly Mohamed","year":"2016"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/016173468400600107"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/1409060.1409085"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF02323555"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/1360612.1360698"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1137\/16M1084183"},{"key":"e_1_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10851-010-0251-1"},{"key":"e_1_2_2_8_1","doi-asserted-by":"publisher","DOI":"10.1109\/TMI.2011.2172951"},{"key":"e_1_2_2_9_1","volume-title":"Proceedings of MEDICON 2001","author":"Chlewicki W","year":"2001"},{"key":"e_1_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1145\/1360612.1360697"},{"key":"e_1_2_2_11_1","doi-asserted-by":"publisher","DOI":"10.1109\/TMI.2006.889743"},{"key":"e_1_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.1145\/2897824.2925969"},{"key":"e_1_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00348-006-0212-z"},{"key":"e_1_2_2_14_1","doi-asserted-by":"publisher","DOI":"10.1364\/JOSAA.1.000612"},{"key":"e_1_2_2_15_1","doi-asserted-by":"publisher","DOI":"10.5201\/ipol.2012.g-tvd"},{"key":"e_1_2_2_16_1","doi-asserted-by":"publisher","DOI":"10.1145\/2601097.2601147"},{"key":"e_1_2_2_17_1","doi-asserted-by":"publisher","DOI":"10.1145\/2185520.2185548"},{"key":"e_1_2_2_18_1","doi-asserted-by":"publisher","DOI":"10.1109\/TPAMI.2007.1056"},{"key":"e_1_2_2_19_1","doi-asserted-by":"crossref","unstructured":"Gabor T. 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