Patch Similarity Modulus and Difference Curvature Based Fourth-Order Partial Differential Equation for Image Denoising

Table 2

The MAE, PSNR, and MSSIM values of various methods for Lena image at different noise levels.

Denoising methods
	MAE	PSNR/dB	MSSIM	MAE	PSNR/dB	MSSIM	MAE	PSNR/dB	MSSIM
Noisy image	7.9485	28.1560	0.6586	11.9441	24.6391	0.5173	15.9926	22.1030	0.4177
PM model	4.4802	32.1004	0.8791	5.7156	29.6271	0.8201	6.6985	28.1649	0.7824
YK model	4.5546	31.9244	0.8764	5.8983	29.5742	0.8193	6.9124	28.0922	0.7859
SGH model	4.0674	32.6232	0.9000	5.0498	30.8383	0.8676	5.9967	29.3215	0.8296
AFOD filter	4.0047	32.8565	0.9069	5.0549	30.8585	0.8698	6.0572	29.3669	0.8313
Proposed algorithm	3.7691	33.6100	0.9169	4.8358	31.2768	0.8769	5.7313	29.7595	0.8441