Variable-Order Fractional Diffusion Model-Based Medical Image Denoising

Table 1

The PSNR and MSE values obtained by applying different test images.

Models					Avg. PSNR	MSE	Iterations (sec)
OCT-retina image ( and )
Integer-order diffusion	31.97	36.5	34.05	31.45	33.49	0.99	0.69
Fractional-order diffusion	38.14	39.95	35.27	34.81	37.04	0.67	0.67
Proposed model	41.04	44.63	44.05	41.29	42.75	0.44	0.53
MRI-brain image ( and )
Integer-order diffusion	24.19	24.16	24.19	24.15	24.17	0.75	0.68
Fractional-order diffusion	36.14	36.18	36.19	36.15	36.17	0.25	0.66
Proposed model	43.50	43.73	43.84	44.13	43.8	0.15	0.50
CT-lung image ( and )
Integer-order diffusion	26.72	25.69	24.97	25.73	25.78	0.27	0.66
Fractional-order diffusion	36.49	37.19	37.11	36.55	36.84	0.21	0.64
Proposed model	44.09	44.57	44.50	44.29	44.36	0.19	0.54
X-ray-spider image ( and )
Integer-order diffusion	30.89	32.72	32.75	32.26	32.15	0.35	0.66
Fractional-order diffusion	40.30	41.06	41.07	41.01	40.86	0.31	0.62
Proposed model	44.13	44.03	44.01	43.99	44.04	0.24	0.56