Computational Imaging -- Centrum Wiskunde & Informatica
Published February 11, 2021 | Version v1
Dataset Open

A CT dataset of a small wooden block

Authors/Creators

  • 1. Centrum Wiskunde & Informatica

Contributors

Work package leader:

  • 1. Centrum Wiskunde & Informatica

Description

Summary

This submission contains a tomographic dataset of a small wooden block.

The data is made available as part of [Bossema et al., 2021].  

Apparatus

The dataset is acquired using the custom-built and highly flexible CT scanner, FleX-ray Laboratory, developed by TESCAN-XRE, located at CWI in Amsterdam. This apparatus consists of a cone-beam microfocus X-ray point source that projects polychromatic X-rays onto a 1944-by-1536 pixels, 14-bit, flat detector panel. Full details can be found in [Coban 2020].

 

Sample Information

The sample is small wooden block of conifer wood (10x12x3cm).
 

Experimental Plan

The data in this submission was collected to compare CT reconstructions to reconstructions obtained using a line trajectory (LT) scanning method (see Zenodo dataset 10.5281/zenodo.4541555) (see Figure 5 in [Bossema et al, 2021]).

The dataset consists of a CT dataset containing 2915 projections.

All raw data (i.e. no corrections) is made available in .tif format.

List of Contents

The content of the submission is given below.

  • CT_flat: 2915 projections

Each data folder contains:

  • dark-field (or closed-shutter) image, di000000.tif,
  • flat-field (or open-shutter) image before acquisition, io000000.tif, and after acquisition, io000001.tif,
  • raw (unprocessed or uncorrected) projections, scan_*.tif,
  • scan settings.txt, a text file with scanner metadata in more human readable format, and
  • script_executed.txt, the text file containing the list of commands the apparatus has executed.

Additional Links

These datasets are produced by the Computational Imaging group at Centrum Wiskunde & Informatica (CI-CWI). For any relevant Python/MATLAB scripts for the FleX-ray datasets, we refer the reader to our group's GitHub page.

 

Contact Details

For more information or guidance in using these datasets, please get in touch with 

  • bossema [at] cwi.nl

 

Acknowledgments

The authors would like to acknowledge the funding from the Netherlands Organisation for Scientific Research (NWO), project numbers 341-60-001, 639.073.506 and 628.007.033 and Netherlands Institute for Conservation, Art and Science (NICAS).

 

 

Files

CT_flat.zip

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Additional details

References

  • Francien G.Bossema, Marta Domínguez-Delmás, Willem Jan Palenstijn, Alexander Kostenko, Jan Dorscheid, Sophia Bethany Coban, Erma Hermens and K. Joost Batenburg, Line trajectory X-ray tomography: a novel method for dendrochronology of large historical wooden objects, Nat. Sci. Rep., 2021 [submitted]
  • S. B. Coban, F. Lucka, W. J. Palenstijn, D. Van Loo, and K. J. Batenburg, Explorative imaging and its implementation at the FleX-ray Laboratory, J. Imaging, vol. 6, no. 18, 2020, doi: 10.3390/jimaging6040018.