An NSCT Image Denoising Method Based on Genetic Algorithm to Optimize the Threshold

Table 2

Comparison of edge retention index.

Image number	The proposed method of this paper		Method of literature [8]/dB		Method of literature [9]/dB
	EPIH	EPIV	EPIH	EPIV	EPIH	EPIV
1	1.7579	1.6521	0.9752	1.3512	1.0521	0.7621
2	1.5274	1.4975	0.7451	1.2415	1.2154	0.7715
3	1.6325	1.7524	1.2516	1.3254	1.3214	0.9561
4	1.5742	1.5796	1.1577	1.2547	1.2514	0.7521
5	1.6355	1.6254	1.2354	1.1524	1.1752	1.1254
6	1.7422	1.7521	1.3521	0.9754	1.05275	0.0975
7	1.5746	1.6571	1.2745	1.2541	0.9752	1.1072
7	1.4752	1.5741	1.2514	0.9521	0.7542	1.1205
9	1.6125	1.7526	1.1975	1.1754	0.7572	1.2354
10	1.5975	1.5974	0.9452	1.2544	1.1352	1.0751