Blood Vessel Extraction in Color Retinal Fundus Images with Enhancement Filtering and Unsupervised Classification

Table 2

The obtained average results from STARE and DRIVE databases in whole image (cluster size is 3).

	TPR	SPE	ACC
STARE images
Gabor filter + FCM	75.38	96.83	95.18
Gauss filter + FCM	59.20	97.07	94.16
Frangi filter + FCM	57.62	98.79	95.71
Gabor filter + K-means	68.69	98.16	95.94
Gauss filter + K-means	70.24	97.09	95.16
Frangi filter + K-means	58.98	98.63	95.67
DRIVE images
Gabor filter + FCM	67.76	98.59	95.87
Gauss filter + FCM	74.29	97.02	95.00
Frangi filter + FCM	69.27	98.39	95.82
Gabor filter + K-means	61.02	99.05	95.71
Gauss filter + K-means	61.79	98.75	95.50
Frangi filter + K-means	68.83	98.43	95.83