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

Table 10

DWT-PCA-based texture features of IWOA-based segmented image.

Features	Images
	SegImg 1	SegImg 2	SegImg 3	SegImg 4	SegImg 5	SegImg 6	SegImg 7	SegImg 8
Contrast	0.1197	0.1020	0.1387	0.1217	0.1202	0.0932	0.1172	0.1503
Correlation	0.9778	0.8647	0.9669	0.9660	0.6612	0.9736	0.8898	0.8059
Homogeneity	0.9733	0.9739	0.9740	0.9733	0.9746	0.9702	0.9716	0.9774
Mean	0.00151	0.00087	0.00252	0.00210	0.00202	0.00115	0.00178	0.0018
Std. deviation	0.06017	0.06018	0.06014	0.06015	0.06016	0.06018	0.06016	0.06016
Variance	0.003621	0.003622	0.003623	0.00362	0.00362	0.003619	0.003621	0.003624
Entropy	2.140	2.6620	1.5241	1.8340	2.3087	2.7367	2.3822	1.0632
Energy	0.9012	0.9018	0.9068	0.9001	0.9060	0.8855	0.8946	0.9204
Smoothness	0.9659	0.9424	0.9792	0.9752	0.9743	0.9557	0.9710	0.9714
Kurtosis	26.65	23.53	31.46	27.60	31.62	17.14	29.79	43.02
Skewness	1.7083	1.3639	2.2488	1.7548	2.1902	0.9658	1.8319	2.5913
IDM	1.3841	1.7791	−0.5052	1.425	2.790	−0.3163	1.2450	0.6260
Features	SegImg 9	SegImg 10	SegImg 11	SegImg 12	SegImg 13	SegImg 14	SegImg 15	Avg.
Contrast	0.1145	0.1112	0.0779	0.0827	0.0883	0.0825	0.0860	0.107073
Correlation	0.9853	0.9534	0.9543	0.9500	0.9186	0.9355	0.9454	0.91656
Homogeneity	0.9740	0.9726	0.9710	0.9710	0.9719	0.9711	0.9702	0.972673
Mean	0.00092	0.00151	0.00071	0.00122	0.00093	0.00137	0.00152	0.001462
Std. deviation	0.06018	0.06017	0.06019	0.06018	0.06018	0.06017	0.06017	0.060169
Variance	0.003621	0.003622	0.003618	0.003618	0.003618	0.003614	0.003619	0.00362
Entropy	2.3972	2.1250	3.1821	3.0411	2.9107	3.2324	3.1900	2.448627
Energy	0.90291	0.89888	0.88843	0.88816	0.89214	0.89083	0.88684	0.897639
Smoothness	0.9454	0.9660	0.9306	0.9582	0.9459	0.9625	0.9662	0.96066
Kurtosis	24.34	24.79	7.80	10.36	15.01	9.05	9.58	22.116
Skewness	1.5156	1.5021	0.3749	0.5657	0.7329	0.6256	0.6490	1.37472
IDM	1.2370	1.7377	−0.0899	0.6499	0.7130	1.2152	−0.6299	0.884047