Table 2.

Performance measurement based on overlapping areas between the proposed approach and other segmentation approaches on the DIARETDB0 database and DRISHTI-GS database.

	Average overlapping ratio (DIARETDB0) (%)	Accuracy rate (DIARETDB0) (%)	Average overlapping ratio (DRISHTI-GS) (%)	Accuracy rate (DRISHTI-GS) (%)
Hough [31]	61.42	89.60	60.55	88.10
MRS [35]	61.96	90.80	60.81	88.60
GVF [36]	63.66	92.80	61.86	91.30
CV [37]	55.15	86.10	55.15	85.30
LIF [28]	63.89	93.10	63.02	91.70
LSACM [38]	64.24	93.90	63.91	93.50
Ours (LIFO)	66.59	96.30	65.61	96.10
Normal	67.33	98.40	66.25	98.90
Abnormal	65.53	95.90	64.87	94.90