Modified Discrete Grey Wolf Optimizer Algorithm for Multilevel Image Thresholding

Table 6

MEAN metrics of MTEMO, DE, ABC, GWO, and MDGWO.

Image		MTEMO	DE	ABC	GWO	MDGWO
Camerman	2	17.584	12.4212	17.7638	14.634	17.471
	3	21.976	17.3764	22.3059	21.107	21.919
	4	26.586	21.7520	26.8409	24.927	27.480
	5	30.506	26.2505	30.8328	30.436	30.548
Lena	2	17.831	12.7730	17.8139	17.809	18.396
	3	22.120	17.6428	22.0832	22.074	22.856
	4	25.999	21.8784	26.0615	25.318	26.447
	5	29.787	25.7311	29.9664	29.252	30.381
Baboon	2	17.625	12.7333	17.6760	17.679	18.619
	3	22.269	17.5005	22.1276	22.129	22.949
	4	26.688	21.9010	26.3912	26.194	26.900
	5	30.800	25.9681	30.3464	30.067	30.076
Butterfly	2	16.681	12.5796	17.4205	17.425	17.723
	3	21.242	17.2545	22.2209	21.585	22.498
	4	25.179	22.0176	26.3794	25.267	26.190
	5	28.611	26.1795	30.6533	29.492	29.899
Maize	2	18.631	13.3566	18.6316	18.604	19.542
	3	23.565	18.4245	23.2496	22.941	23.939
	4	27.529	22.9813	27.3931	26.936	27.842
	5	31.535	27.1709	31.2127	31.023	30.694
Sea Star	2	18.754	13.4104	18.7295	18.321	19.587
	3	23.323	18.5516	23.2738	23.245	23.901
	4	27.582	23.0719	27.5057	27.136	28.210
	5	31.562	27.2551	31.4919	31.167	31.958
Smiling Girl	2	17.334	12.3892	17.3129	17.136	18.035
	3	21.904	17.1339	21.8601	21.253	21.980
	4	26.040	21.6541	25.9904	25.050	26.597
	5	30.089	25.7130	30.0225	29.870	30.574
Surfer	2	18.339	13.0786	18.3393	18.283	18.869
	3	23.231	18.1492	23.2889	23.243	24.135
	4	27.863	23.0548	27.8017	27.275	27.447
	5	31.823	27.4979	31.7335	31.384	31.325