Tomographic X-ray data of a walnut

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dc.contributor.affiliationUniversity of Helsinki - Hämäläinen, Keijo
dc.contributor.affiliationAalto University - Harhanen, Lauri
dc.contributor.affiliationUniversity of Helsinki - Kallonen, Aki
dc.contributor.affiliationUniversity of Helsinki - Kujanpää, Antti
dc.contributor.affiliationUniversity of Helsinki - Niemi, Esa
dc.contributor.affiliationUniversity of Helsinki - Siltanen, Samuli
dc.contributor.authorHämäläinen, Keijo
dc.contributor.authorHarhanen, Lauri
dc.contributor.authorKallonen, Aki
dc.contributor.authorKujanpää, Antti
dc.contributor.authorNiemi, Esa
dc.contributor.authorSiltanen, Samuli
dc.date.accessioned2025-03-24T15:11:13Z
dc.date.issued2015-02-11
dc.date.issued2015-02-11
dc.descriptionThis is an open-access dataset of tomographic X-ray data of a walnut. The dataset consists of the X-ray sinogram of a single 2D slice of the walnut with three different resolutions and the corresponding measurement matrices modeling the linear operation of the X-ray transform. Each of these sinograms was obtained from a measured 120-projection fan-beam sinogram by down-sampling and taking logarithms. The original (measured) sinogram is also provided in its original form and resolution. In addition, a larger set of 1200 projections of the same walnut was measured and a high-resolution filtered back-projection reconstruction was computed from this data; both the sinogram and the FBP reconstruction are included in the dataset, the latter serving as a ground truth reconstruction. Documentation of the dataset is available at arxiv.org/abs/1502.04064. See also www.fips.fi/dataset.php.
dc.identifierhttps://doi.org/10.5281/zenodo.1254206
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/9026
dc.rightsOpen
dc.rights.licensecc-by-4.0
dc.subjectX-ray
dc.subjectRadon transform
dc.subjectinverse problem
dc.titleTomographic X-ray data of a walnut
dc.typedataset
dc.typedataset

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