Normal Inverse Gaussian Model-Based Image Denoising in the NSCT Domain

Table 3

Image quality metrics for image Barbara following denoising by BM3D and the proposed method.

	σ	2	5	10	15	20	25	30	35	50	75	100	Average
SSIM	BM3D	0.9970	0.9891	0.9767	0.9650	0.9530	0.9406	0.9272	0.9123	0.8706	0.8013	0.7364	0.9154
	Proposed	0.9971	0.9899	0.9771	0.9644	0.9517	0.9391	0.9264	0.9140	0.8773	0.8204	0.7695	0.9206
FSIM	BM3D	0.9983	0.9932	0.9840	0.9757	0.9676	0.9600	0.9526	0.9446	0.9244	0.8917	0.8618	0.9504
	Proposed	0.9983	0.9932	0.9836	0.9741	0.9652	0.9569	0.9491	0.9418	0.9217	0.8933	0.8697	0.9497
SSF	BM3D	0.9997	0.9987	0.9965	0.9943	0.9921	0.9899	0.9876	0.9851	0.9787	0.9675	0.9553	0.9859
	Proposed	0.9997	0.9988	0.9966	0.9943	0.9920	0.9896	0.9874	0.9852	0.9786	0.9678	0.9569	0.9861

Bold number indicates best performing method in separate column for each image quality metrics.