set1/image00a

Method	Time (sec)	F-measure %	PSNR (dB)	NRM (10^-2)	IND
Otsu	0.00593	23.091	6.570	46.188	-0.244
Chang	0.01658	43.771	11.855	20.140	0.224
Niblack	1.04380	67.690	21.119	6.934	0.512
Sauvola	1.04060	26.833	22.337	42.252	0.155
Bernsen	0.89380	44.807	12.770	20.546	0.192
Rahul	1.69060	95.838	45.614	2.790	0.917
Gatos	2.67200	55.336	24.757	29.992	0.258
Kim	61.82800	45.937	13.085	19.512	0.213
Valizadeh	4.75000	82.956	30.405	6.250	0.675