[Retracted] Efficient COVID-19 CT Scan Image Segmentation by Automatic Clustering Algorithm

Table 9

Comparison of average segmentation metrics of IWOA, WOA, SSA, and SCA.

Segmentation measures	Methods
	IWOA	WOA	SSA	SCA
Accuracy	0.9695	0.9309	0.9352	0.9016
Specificity	0.9912	0.9362	0.9477	0.8983
Precision	0.9403	0.7419	0.8234	0.7491
Sensitivity	0.8472	0.8007	0.8154	0.7676
F_measure	0.8890	0.7489	0.7820	0.7320
Gmean	0.9138	0.8595	0.8672	0.8199
SSIM	0.8691	0.7961	0.8217	0.7868

Bold entries represent the best value.