Mri reconstruction with analysis sparse regularization under impulsive noise
24th European Signal Processing Conference, EUSIPCO 2016, Budapest, Macaristan, 28 Ağustos - 02 Eylül 2016, cilt.2016-November, ss.538-541, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 2016-November
- Doi Numarası: 10.1109/eusipco.2016.7760306
- Basıldığı Şehir: Budapest
- Basıldığı Ülke: Macaristan
- Sayfa Sayıları: ss.538-541
- Anahtar Kelimeler: Magnetic resonance, image reconstruction, compressed sensing, analysis sparsity, impulsive noise
- Kırklareli Üniversitesi Adresli: Evet
Özet
We will be considering analysis sparsity based regularization for Magnetic Resonance Imaging reconstruction. The analysis sparsity regularization is based on the recently introduced Transform Learning framework, which has reduced complexity regarding other sparse regularization methods. We will formulate a variational reconstruction problem which utilizes the analysis sparsity regularization together with an ℓ1norm based data fidelity term. The use of the non-smooth data fidelity term results in robustness against outliers and impulsive noise in the observed data. The resulting algorithm with the ℓ1observation fidelity showcases enhanced performance under impulsive observation noise when compared to a similar algorithm utilizing the conventional quadratic error term.