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Multiresolution methods applied to a diffusion-weighted image (b=500): a) the original size 256×256; b) compressed image (64×64) at different levels. c) For compression 2D biorthogonal spline wavelets were used. d(h)j, d(v)j and d(d)j respectively are detail components corresponding to vertical, horizontal, and diagonal. aj, is the approximation (coarse) component at decomposition level. Data from 147
