February 11, 2015 Dataset Open Access

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

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  <identifier identifierType="DOI">10.5281/zenodo.1254206</identifier>
  <creators>
    <creator>
      <creatorName>Hämäläinen, Keijo</creatorName>
      <givenName>Keijo</givenName>
      <familyName>Hämäläinen</familyName>
      <affiliation>University of Helsinki</affiliation>
    </creator>
    <creator>
      <creatorName>Harhanen, Lauri</creatorName>
      <givenName>Lauri</givenName>
      <familyName>Harhanen</familyName>
      <affiliation>Aalto University</affiliation>
    </creator>
    <creator>
      <creatorName>Kallonen, Aki</creatorName>
      <givenName>Aki</givenName>
      <familyName>Kallonen</familyName>
      <affiliation>University of Helsinki</affiliation>
    </creator>
    <creator>
      <creatorName>Kujanpää, Antti</creatorName>
      <givenName>Antti</givenName>
      <familyName>Kujanpää</familyName>
      <affiliation>University of Helsinki</affiliation>
    </creator>
    <creator>
      <creatorName>Niemi, Esa</creatorName>
      <givenName>Esa</givenName>
      <familyName>Niemi</familyName>
      <affiliation>University of Helsinki</affiliation>
    </creator>
    <creator>
      <creatorName>Siltanen, Samuli</creatorName>
      <givenName>Samuli</givenName>
      <familyName>Siltanen</familyName>
      <affiliation>University of Helsinki</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Tomographic X-ray data of a walnut</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2015</publicationYear>
  <subjects>
    <subject>X-ray</subject>
    <subject>Radon transform</subject>
    <subject>inverse problem</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2015-02-11</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Dataset"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/1254206</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsDocumentedBy">https://arxiv.org/abs/1502.04064</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.1254205</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/fips</relatedIdentifier>
  </relatedIdentifiers>
  <version>1.0.0</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;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.&lt;/p&gt;

&lt;p&gt;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.&lt;/p&gt;

&lt;p&gt;Documentation of the dataset is available at &lt;a href="https://arxiv.org/abs/1502.04064"&gt;arxiv.org/abs/1502.04064&lt;/a&gt;. See also &lt;a href="https://www.fips.fi/dataset.php"&gt;www.fips.fi/dataset.php&lt;/a&gt;.&lt;/p&gt;</description>
  </descriptions>
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