Performance Evaluation of Noise Reduction Filters for Color Images through Normalized Color Difference (NCD) Decomposition

Table 4

List of MSE_A, MSE_B, NCD_gau, and NCD_dis values (“House” image corrupted by Gaussian noise with 𝜎=20 and filtered by (2𝑁+1)×(2𝑁+1) vector mean operators).

𝑁	MSEA	MSEB	NCDgau (×10^2)	NCDdis (×10^2)
2	23.94	30.74	3.42	8.19
3	30.19	37.49	1.88	9.25
4	34.93	41.82	1.17	10.20
5	38.97	45.07	0.79	11.04