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OpenRecon is an open-source software library for image reconstruction.

As of 2016-11-29, this project may now be found at

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  • **Scan geometries** -- forward projection and reconstruction in the following modes: Parallel-beam, and Fan-beam (with equispaced detectors). Support for fan-beam geometry (with detectors arranged in an arc) is being added, and will be completed in future releases
  • **Reconstruction algorithms**: Analytic reconstruction (Filtered back-projection), Iterative reconstruction (SART, SIRT, OS-SART)
  • **Image filtering** (used as regularization steps within the iterative reconstruction process): TV-minimization by gradient descent, Soft-threshold filtering
  • Additionally, the projection angles can be spaced in any fashion (i.e. they do not have to be linearly spaced).
  • Can handle center shift (i.e. when the mid-line of the fan-beam is shifted from the center of rotation by a certain amount ) which is especially common in micro-CT and fixed source-detector configurations (e.g. in Xradia MicroXCT and Xradia NanoXCT scanners).
  • 1st open-source software library that supports compressive-sensing based reconstruction algorithms for x-ray computed tomography (including micro- and nano-CT), electron microscopy, and various other applications.


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