Table 2.

Index evaluation results of different intensities of noise.

Evaluation index	$n$ = 150	$n$ = 300	$n$ = 450	$n$ = 600	$n$ = 750	$n$ = 900
PSNR($\text{dB}$)	16.0127	16.8549	17.8094	19.4697	19.3374	19.2137
SSIM	0.7053	0.6609	0.8283	0.8567	0.8635	0.8498
UV	46%	51%	70%	82%	78%	73%