This code applies the BM4D reconstruction algorithm originally developed from [1] and applies it to a spiral acquisition [2] sampled on non-cartesian coordinates. Some of the code developed by [1] is used in the simulation, so it has to be downloaded and added to the path.
Implemented in MATLAB R2018b.
[1] M. Maggioni, A. Foi, "Nonlocal Transform-Domain Denoising of Volumetric Data With Groupwise Adaptive Variance Estimation", Proc. SPIE Electronic Imaging 2012, San Francisco, CA, USA, Jan. 2012. Code used: https://webpages.tuni.fi/foi/GCF-BM3D/index.html (BM4D LEGACY VERSION)
[2] Glover. Magnetic Resonance in Medicine. 1999 https://doi.org/10.1002/(SICI)1522-2594(199908)42:2%3C412::AID-MRM25%3E3.0.CO;2-U