Table 4: Statistical parameters for exudates detection process by the proposed FCLA method for different threshold values of image binarization when .

	τ=30			τ=60			τ=90
	ς=0.3	ς=0.6	ς=0.9	ς=0.3	ς=0.6	ς=0.9	ς=0.3	ς=0.6	ς=0.9
Sensitivity	~85%	~88%	~87%	~87%	~91%	~91%	~95%	~99%	~97%
Specificity	~96%	~97%	~94%	~98%	~99%	~99%	~99%	~99.9%	~99.6%
Accuracy	~87%	~91%	~89%	~89%	~95%	~94%	~97%	~99%	~98%
Average	~89.3%	~92%	~90%	~91.3%	~95%	~94.7%	~97%	~99.3%	~98.2%