“…Menzel et al (2011) and Lee et al (2012) constructed the PDF of diffusion while considering it to be sparse in the wavelet domain and to have small total variation. In addition, adaptive dictionaries (Bilgic et al, 2012(Bilgic et al, , 2013 with symmetry and positivity considerations (Gramfort, Poupon, & Descoteaux, 2014) have also been chosen as the sparse domain, significantly reducing the DSI acquisition time. In addition, adaptive dictionaries (Bilgic et al, 2012(Bilgic et al, , 2013 with symmetry and positivity considerations (Gramfort, Poupon, & Descoteaux, 2014) have also been chosen as the sparse domain, significantly reducing the DSI acquisition time.…”