New methods for MRI denoising based on sparseness and self-similarity
Keywords: VBM; voxel-based morphometry; PCA; principal component analysis; DCT; discrete cosine transform; NLM; nonlocal means; ODCT3D; oracle-based 3D discrete cosine transform filter; RI-NLM3D; rotationally invariant nonlocal means filter; PRI-NLM3D; prefiltered