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Research software . Software . 2021

Gratopy 0.1

Kristian Bredies; Richard Huber;
Open Access
Published: 23 Aug 2021
Publisher: Zenodo
Abstract
The gratopy (Graz accelerated tomographic projections for Python) toolbox is a Python3 software package for the efficient and high-quality computation of Radon transforms, fanbeam transforms as well as the associated backprojections. The included operators are based on pixel-driven projection methods which were shown to possess favorable approximation properties. The toolbox offers a powerful parallel OpenCL/GPU implementation which admits high execution speed and allows for seamless integration into PyOpenCL. Gratopy can efficiently be combined with other PyOpenCL code and is well-suited for the development of iterative tomographic reconstruction approaches, in particular, for those involving optimization algorithms. Highlights Easy-to-use tomographic projection toolbox. High-quality 2D projection operators. Fast projection due to custom OpenCL/GPU implementation. Seamless integration into PyOpenCL. Basic iterative reconstruction schemes included (Landweber, CG, total variation). Comprehensive documentation, tests and example code.
Subjects

Radon transform, fanbeam transform, pixel-driven projection methods, computed tomography, image reconstruction

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