Hi Dibakar Pal .Thanks for your reply. I have seen these links. I am writing a review paper about MRI denoising methods in Transform domain. I want to know can I group BM3D papaers in Transform domain? Thanks
Yes, but you should consider BM4D instead of BM3D for volumetric MRI denoising. Both of them perform denoising on the wavelet transform domain after collaborative grouping. BM4D also uses a variance stabilizing transformation to transform Rician noise into gaussian noise before the denoising step. Check https://www.cs.tut.fi/~foi/GCF-BM3D/#ref_softwareBM4D