February 11, 2015 Dataset Open Access

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

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    <subfield code="a">&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;</subfield>
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