Dataset Open Access

Tomographic X-ray data of a walnut

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

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 arxiv.org/abs/1502.04064. See also www.fips.fi/dataset.php.

Files (195.8 MB)
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Data164.mat
md5:71600ad279ef231eaaa269d78c447b85
33.2 MB Download
Data328.mat
md5:4172c77195df57e4c289b9f0f2440b82
135.8 MB Download
Data82.mat
md5:5698942708300bc34b87931c6d91f6b6
8.1 MB Download
Documentation_v1.pdf
md5:d6da2e6ade614f073e065d9add0b809e
5.2 MB Download
example.m
md5:32b784dc5a30b9dcad534a232dd1b5ac
1.1 kB Download
FullSizeSinograms.mat
md5:b1743cd69d3027c50ad5501373ead2b0
3.9 MB Download
GroundTruthReconstruction.mat
md5:4730bc6421133b71b755fbd892a8e515
9.7 MB Download
MD5SUMS
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349 Bytes Download
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