Table 2. The performance of each kind of textural features.

Textural features	Sensitivity	Specificity	Youden	AUC	Accuracy	Precision	F
Correlation	0.69	0.55	0.24	0.63	0.65	0.82	0.75
Cluster tendency	0.81	0.29	0.10	0.53*	0.68	0.77	0.79
Difference-entropy	0.63	0.52	0.15	0.58	0.60	0.80	0.70
Difference-mean	0.67	0.48	0.15	0.57	0.63	0.79	0.73
Energy	0.81	0.38	0.19	0.60	0.70	0.80	0.80
Entropy	0.66	0.55	0.21	0.62	0.63	0.81	0.73
Homogeneity	0.73	0.45	0.18	0.59	0.66	0.80	0.76
IDM	0.66	0.54	0.19	0.60	0.63	0.81	0.73
Inertia	0.67	0.57	0.24	0.63	0.65	0.82	0.74
Mean	0.68	0.43	0.11	0.53*	0.62	0.78	0.73
MP	0.68	0.54	0.21	0.61	0.64	0.81	0.74
SD	0.53	0.62	0.15	0.59	0.55	0.81	0.64
Sum-mean	0.82	0.29	0.10	0.52*	0.68	0.77	0.80
Sum-entropy	0.58	0.62	0.19	0.63	0.59	0.82	0.68

Abbreviation used: AUC, the least area under the curve; IDM, Inverse difference moment; MP, Maximum probability; SD, Standard deviation; F, F_measure;

*P>0.05.