Dataset Open Access

Tomographic X-ray data of a walnut

Hämäläinen, Keijo; Harhanen, Lauri; Kallonen, Aki; Kujanpää, Antti; Niemi, Esa; Siltanen, Samuli

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<oai_dc:dc xmlns:dc="" xmlns:oai_dc="" xmlns:xsi="" xsi:schemaLocation="">
  <dc:creator>Hämäläinen, Keijo</dc:creator>
  <dc:creator>Harhanen, Lauri</dc:creator>
  <dc:creator>Kallonen, Aki</dc:creator>
  <dc:creator>Kujanpää, Antti</dc:creator>
  <dc:creator>Niemi, Esa</dc:creator>
  <dc:creator>Siltanen, Samuli</dc:creator>
  <dc:description>This 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 See also</dc:description>
  <dc:subject>Radon transform</dc:subject>
  <dc:subject>inverse problem</dc:subject>
  <dc:title>Tomographic X-ray data of a walnut</dc:title>
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