Research Article

An Alternating Direction Method for Mixed Gaussian Plus Impulse Noise Removal

Table 3

The PSNR (dB) and computing time (seconds) for the restoration results by MNID-ADMM, Cai-TP, and HADMM for blurred images contaminated by Gaussian noise ( ) plus salt-and-pepper noise. The blurring kernel is the out-of-focus kernel of radius 3.

Type Image Level MNID-ADMM Cai-TP HADMM
PSNRTime PSNRTime PSNRTime

Gaussian + salt and pepper Einstein 27.412.4 26.829.6 27.24.1
Cameraman 50% 25.112.5 24.624.6 25.1 3.4
Boat 25.712.9 25.418.4 25.5 3.4

Gaussian + salt and pepper Einstein 26.613.8 26.129.8 26.24.7
Cameraman 70% 24.513.8 24.022.6 24.44.1
Boat 25.113.4 24.919.2 25.04.3