An Alternating Direction Method for Mixed Gaussian Plus Impulse Noise Removal

Table 1

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

Type	Image	Level	MNID-ADMM		Cai-TP		HADMM
			PSNR	Time	PSNR	Time	PSNR	Time
	Lena		30.6	15.8	30.2	117.6	30.5	7.9
Salt and pepper	Einstein	70%	31.9	15.1	29.7	111.9	31.7	7.9
	Cameraman		27.7	14.0	26.7	132.6	27.4	7.8
	Boat		28.8	14.8	28.0	111.9	28.6	7.6
	Lena		33.0	27.1	28.0	158.9	32.4	6.2
Random valued noise	Einstein	55%	34.5	26.2	27.4	132.4	34.2	5.5
	Cameraman		30.5	24.8	24.8	172.7	30.2	5.9
	Boat		31.7	24.6	26.1	128.3	31.0	5.8