Figure 2
From: A class of hyperbolic-parabolic coupled systems applied to image restoration
Artificial heavily noised image. (pic 1) Original noise-free image. (pic 2) Heavily noised image with \(\mathrm{SNR}=2.25\). (pic 3) Image restored by the present model with \(\tau=0.21\), \(\lambda =21\), \(K=7\), \(\sigma=1.2\), and 662 iterations, \(\mathrm{SNR}=10.30\). (pic 4) Image restored by (1.1)-(1.2), (1.2) with \(\tau=0.3\), \(\lambda=21\), \(K=7\), and 5,151 iterations, \(\mathrm{SNR}=9.06\).