Tutorials
This series of tutorials should guide you through the use of the SPyRiT pipeline.
Each tutorial focuses on a specific submodule of the full pipeline.
Tutorial 1.a introduces the basics of measurement operators.
Tutorial 1.b introduces the splitting of measurement operators.
Tutorial 1.c introduces the 2d Hadamard transform with subsampling.
Tutorial 2 introduces the noise operators.
Tutorial 3 demonstrates pseudo-inverse reconstructions from Hadamard measurements.
Note
The Python script (.py) or Jupyter notebook (.ipynb) corresponding to each tutorial can be downloaded at the bottom of the page. The images used in these files can be found on GitHub.
The tutorials below will gradually be updated to be compatible with SPyRiT 3 (work in progress, in the meantime see SPyRiT 2.4.0).
Tutorial 3 uses a CNN to denoise the image if necessary
Tutorial 4 is used to train the CNN introduced in Tutorial 3
Tutorial 5 introduces a new type of measurement operator (‘split’) that simulates positive and negative measurements
Tutorial 6 uses a Denoised Completion Network with a trainable image denoiser to improve the results obtained in Tutorial 5
Tutorial 7 shows how to perform image reconstruction using a pretrained plug-and-play denoising network.
Tutorial 8 shows how to perform image reconstruction using a learnt proximal gradient descent.
Tutorial 9 explains motion simulation from an image, dynamic measurements and reconstruction.
Explore Bonus Tutorial if you want to go deeper into Spyrit’s capabilities
03. Pseudoinverse solution from linear measurements