20.500.12556/DiRROS-21000 Direct reconstruction of wet foam from sparse-view, dynamic X-ray CT scans X-ray imaging of wet foam dynamics with a high temporal resolution (e.g., 3D videos with a 10 Hz frame rate) requires fast rotation of either the foam sample or the X-ray gantry. This, however, strongly limits the number of X-ray projections per rotation that can be acquired. As a result, conventional computed tomography reconstruction methods generate 3D images with severe undersampling artefacts, complicating subsequent foam analysis. Herein, BubSub, a novel tomographic reconstruction approach that reconstructs a 4D (3D plus time) dynamic image of wet foam bubbles from sparse-view X-ray projections by leveraging prior knowledge about the evolving foam structure, is introduced. BubSub adapts a collection of subdivision surfaces with spherical topology to represent liquid–gas interfaces of foam bubbles. Estimation of bubble positions and shapes at each time point is achieved by minimizing the projection distance in relation to the measured projections. BubSub operates efficiently with minimal memory usage, exhibits robustness against noise, and provides accurate reconstructions, even when the available projections are limited, as evidenced by various experiments using both simulated and real wet foam X-ray data. redki pogledi dinamika pene rentgenska mikrotomografija tomografska rekonstrukcija sparse views foam dynamics X-ray microtomography tomographic reconstruction true false true Wiley-VCH Angleški jezik Ni določen © 2024 The Author(s) Neznano 2024-12-16 13:13:03 2024-12-16 13:51:35 2024-12-17 03:36:28 0000-00-00 00:00:00 2024 0 0 str. 1-10 issueǂ 23, [article no.] 2400957 Vol. 26 Dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-09-05 621.38 1527-2648 218167811 https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202400957 1 1ac4f145-bba7-11ef-ba3f-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=29718 RAZ_Renders_Jens_2024.pdf RAZ_Renders_Jens_2024.pdf 1 639C8C0B60BC36D585AAA55B45E80F93 0adb4a244c61a73019808b84cd4104a952518752a488088defb1c5b2e3efa472 a48683a2-bba9-11ef-ba3f-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=29719 Zavod za gradbeništvo Slovenije 0 0 0