VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Compressed sensing MRI using discrete nonseparable shearlet transform and FISTA
    Pejoski, Slavche ; Kafedziski, Venceslav ; Gleich, Dušan
    We propose a new compressed sensing MRI approach that uses the discrete nonseparable shearlet transform (DNST) as a sparsifying transform and the fast iterative soft thresholding algorithm (FISTA) ... for reconstruction. FISTA has a simple design and has shown good convergence behavior. The DNST transform has excellent localization properties within the space domain and excellent directional selectivity. We utilize the frequency representation of the DNST canonical dual filters to obtain a memory efficient modified FISTA based algorithm with a simple and efficient way of calculating the update, tuned to the non tight frame DNST transform. The proposed approach shows improved performance and similar execution time when compared with other state of the art reconstruction approaches.
    Vir: IEEE signal processing letters. - ISSN 1070-9908 (Vol. 22, no. 10, 2015, str. 1566-1570)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2015
    Jezik - angleški
    COBISS.SI-ID - 18778390

vir: IEEE signal processing letters. - ISSN 1070-9908 (Vol. 22, no. 10, 2015, str. 1566-1570)
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