Table 1.

Performance of DRIVE Database—RGB and enhanced green channel input image

Image	RGB image (%)			Enhanced green channel (%)
	Sensitivity	Specificity	Accuracy	Sensitivity	Specificity	Accuracy
1	82.46	96.90	95.84	77.67	97.69	95.90
2	81.99	95.81	94.74	76.78	97.95	95.78
3	88.61	96.13	95.58	82.86	97.89	96.48
4	84.64	96.30	95.51	72.23	98.13	95.75
5	86.64	95.52	94.99	66.84	98.41	95.45
6	86.12	95.19	94.64	68.51	98.79	95.84
7	79.39	96.15	94.98	69.62	98.17	95.56
8	81.92	95.89	95.09	61.05	98.71	95.47
9	84.38	95.70	95.16	57.87	99.11	95.77
10	80.70	96.74	95.71	71.48	97.98	95.80
11	77.82	96.57	95.18	89.85	97.36	96.69
12	82.72	96.54	95.64	67.87	98.40	95.77
13	84.24	95.08	94.41	72.19	98.22	95.67
14	76.11	97.12	95.63	73.35	97.62	95.65
15	72.91	97.52	95.89	76.72	97.62	95.93
16	84.33	96.60	95.75	70.04	98.49	95.92
17	81.58	95.97	95.15	74.02	98.65	96.04
18	79.78	96.87	95.80	70.68	98.21	96.03
19	81.59	97.40	96.26	84.55	98.02	96.90
20	79.73	97.14	96.13	73.12	98.24	96.39
Average	81.88	96.36	95.40	72.87	98.18	95.94