Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Jens Renders"'
Publikováno v:
SoftwareX, Vol 24, Iss , Pp 101524- (2023)
Image warping is a popular tool for modeling deformation and motion in digital images. Inversion of such models requires two related operators: adjoint and differentiated image warping. Many applications rely on these operators, often through ad hoc
Externí odkaz:
https://doaj.org/article/7312ee37b3b54a7ca77be28e4c6955df
Publikováno v:
Proceedings of the Society of Photo-optical Instrumentation Engineers
X-ray based inspection often relies on triangular meshes, for example to inspect objects that were manufactured from CAD models. In this work, we present three complementary implementations of X-ray mesh projectors, obtained by adapting state-of-the-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f58b608dac9c9bd1303aa8e39d66396
https://doi.org/10.1117/12.2633448
https://doi.org/10.1117/12.2633448
Publikováno v:
Medical physics
Purpose Adjoint image warping is an important tool to solve image reconstruction problems that warp the unknown image in the forward model. This includes four-dimensional computed tomography (4D-CT) models in which images are compared against recorde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfe58257da8aa56f672a7175af90956c
https://doi.org/10.1002/mp.14765
https://doi.org/10.1002/mp.14765
Publikováno v:
IEEE transactions on computational imaging
IEEE Transactions on Computational Imaging
IEEE Transactions on Computational Imaging
Most lab-based X-ray sources are polychromatic, making the imaging process follow a non-linear model. However, widespread reconstruction algorithms, such as filtered back projection and the simultaneous iterative reconstruction technique, assume the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d78f4dfa0ac022a6ada8ac003afeed08
https://doi.org/10.1109/tci.2021.3133226
https://doi.org/10.1109/tci.2021.3133226
Publikováno v:
Proceedings of the Society of Photo-optical Instrumentation Engineers
Edge illumination is a phase sensitive X-ray imaging technique, compatible with lab-based X-ray sources. Phase information can be retrieved by displacing two masks relative to each other with the object positioned in between. Phase retrieval then all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe9696e82cc8fd1654e23c2d9930d98d
https://repository.uantwerpen.be/docstore/d:irua:16605
https://repository.uantwerpen.be/docstore/d:irua:16605
An accelerated motion-compensated iterative reconstruction technique for dynamic computed tomography
Publikováno v:
Proceedings of the Society of Photo-optical Instrumentation Engineers
This work presents an efficient technique for simultaneously reconstructing an image of a moving object from X-ray projections along with estimating the motion parameters. Current state-of-the-art iterative methods rely on objective functions that co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1efece6e9ee2bedb7c2375977ab2a66
https://hdl.handle.net/10067/1944210151162165141
https://hdl.handle.net/10067/1944210151162165141
Publikováno v:
2021 International Conference on 3D Vision (3DV), 1-3 December, 2021, London, United Kingdom
Due to the rapid nucleation and bubble deformation processes that occur during a foam formation process, 4D-CT scans can only record a small number of X-ray projections per rotation. Current dynamic CT imaging methods compute a series of 3D images, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::433208641b4fb890bab422c65ebd99cb
https://doi.org/10.1109/3dv53792.2021.00138
https://doi.org/10.1109/3dv53792.2021.00138
Autor:
Tim Elberfeld, Björn De Samber, Zhihua Liang, Jens Renders, Yves Maris, Jan Sijbers, Nathanael Six, Jan De Beenhouwer, Jonathan Sanctorum
Publikováno v:
Optics express
Laboratory based X-ray micro-CT is a non-destructive testing method that enables three dimensional visualization and analysis of the internal and external morphology of samples. Although a wide variety of commercial scanners exist, most of them are l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0304f04e227feb745c21f951509956a9
https://repository.uantwerpen.be/docstore/d:irua:4603
https://repository.uantwerpen.be/docstore/d:irua:4603
Publikováno v:
Proceedings
ICIP
ICIP
Most lab-based X-ray sources are polychromatic, making the acquisition follow a non-linear model. However, widespread reconstruction algorithms, such as FBP and SIRT, assume the reconstruction to be a linear problem, leading to artefacts in the recon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::142e372376a00cf610b5309ed0e9d6cb
https://hdl.handle.net/10067/1753610151162165141
https://hdl.handle.net/10067/1753610151162165141
Publikováno v:
University of Antwerp
The 6th International Conference on Image Formation in X-Ray Computed Tomography, 3-7 August, 2020, Regensburg, Germany
The 6th International Conference on Image Formation in X-Ray Computed Tomography, 3-7 August, 2020, Regensburg, Germany
In 4D-CT, a 4D image (3D+time) needs to be reconstructed from projection data of a moving object. A simple approach is to acquire a number of consecutive 3D-CT scans (called subscans) and to then reconstruct them separately. When the object is moving
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::1ef0cd0a01a9c46eef71dda1bc9ad71e
https://hdl.handle.net/10067/1754080151162165141
https://hdl.handle.net/10067/1754080151162165141
