A Multiplicative Noise Removal Approach Based on Partial Differential Equation Model

Table 1

PSNR values obtained with difference filters (template 3 × 3).

Noise level	PSNR(dB) for Lena/vegetables image
	Noisy image	Average filter	Median filter	TV filter	MNRATV
0.05	13.73/13.67	22.08/22.15	23.66/23.56	25.06/25.26	25.47/26.04
0.10	11.40/11.39	19.71/19.74	21.32/21.25	22.48/22.48	23.81/24.14
0.15	10.25/1024	18.36/18.46	19.85/19.80	20.64/20.74	22.64/22.92
0.20	9.54/9.52	17.46/17.50	18.78/18.66	19.44/19.40	21.74/21.78
0.25	9.05/9.05	16.84/16.87	17.96/17.83	18.54/18.56	21.05/21.12
0.30	8.69/8.68	16.40/16.49	17.29/17.16	17.86/17.85	20.46/20.51
0.35	8.42/8.40	16.02/15.98	16.67/16.62	17.29/17.33	19.93/20.02
0.40	8.19/8.20	15.68/15.71	16.24/16.40	16.86/16.90	19.56/19.62