Tomographic X ray data of a lotus root filled with attenuating objects
This is the documentation of the tomographic X ray data of a lotus root, filled with four different attenuating objects, of different sizes. Data are available at this http URL, and can be freely used for scientific purposes with appropriate references to them, and to this document in http:/arxiv.org/arXiv. The data set consists of (1) the X ray sinogram of a single 2D slice of the lotus root with two different resolutions and (2) the corresponding measurement matrices modeling the linear operation of the X ray transform. Each of these sinograms was obtained from a measured 360 projection fan beam sinogram by down sampling and taking logarithms. The original (measured) sinogram is also provided in its original form and resolution.