Retinal Fundus Image Enhancement Using the Normalized Convolution and Noise Removing

Table 2

The comparison of CII and r with different methods on the images shown in Figure 8.

Image	Evaluation measures	HE	CLAHE	Method in [7]	Method in [9]	The proposed method
1st in column (a)	CII	2.3105	2.3252	3.8081	2.2630	5.9076
		0.5391	0.6264	0.2012	0.6401	0.2267
2nd in column (a)	CII	3.0113	3.0059	4.6100	4.5377	7.5447
		0.5418	0.5454	0.2979	0.7148	0.2582
3rd in column (a)	CII	2.2450	3.0392	4.8968	4.7682	7.9369
		0.5412	0.4865	0.2004	0.6378	0.2514