Version 2022.1.0

Note

The changelog is available at https://gitlab.esrf.fr/tomotools/nabu/-/blob/master/CHANGELOG.md

Highlights

This section highlights some of the available features.

Full-field pipelines can now work without GPU

In some cases, it’s useful to run a reconstruction without GPU. Both “chunked and “full-radio” pipelines now support CPU-only reconstruction. Of course, overall processing will be slower, especially reconstruction.

Many of pipeline steps using the numpy backend are multi-threaded by default.

New FBP filters

In the pipeline, the filtered backprojection (FBP) reconstruction method can now use other filter than the default ramlak. Possible values are: shepp-logan, cosine, hamming, hann, tukey, lanczos.

Changes

Configuration file

Some usability improvements:

  • rotation_axis_position is now set to sliding-window by default. In half tomography, the option side="right" is automatically set.

  • overwrite_results is set to True by default.

  • padding_mode is set to edges for FBP by default.

Fixes

  • Reconstruction was sometimes stuck at “Allocating recs”. Nabu now avoids allocating more than 17 GB memory to prevent (py)cuda to freeze.

  • Speed-up partial files write by omitting metadata in them. The metadata is kept only for the final master file.

  • Fix cuda FBP scale factor