A Novel Imperialist Competitive Algorithm for Multithreshold Image Segmentation

Table 6

The maximum values of Ostu’s objective values.

Example	ICA	PSO	GWO	TLBO	Example	ICA	PSO	GWO	TLBO
Test1_2	1961.817	1961.817	1961.790	1961.817	Test6_2	2976.191	2976.191	2976.191	2976.191
3	2128.308	2128.308	2128.308	2128.308	3	3145.463	3145.463	3145.463	3145.463
4	2191.870	2191.870	2190.602	2191.870	4	3216.403	3216.403	3215.399	3216.271
5	2217.799	2217.799	2209.967	2217.726	5	3255.995	3255.995	3238.241	3255.908
Test2_2	1948.719	1948.719	1948.719	1948.719	Test7_2	7209.906	7209.906	7208.633	7209.906
3	2024.834	2024.834	2024.834	2024.834	3	7531.419	7531.419	7531.235	7531.419
4	2070.077	2070.077	2066.278	2070.057	4	7617.718	7617.718	7602.299	7617.682
5	2096.139	2096.139	2075.997	2095.610	5	7666.598	7666.598	7662.395	7666.079
Test3_2	1549.083	1549.083	1549.052	1549.083	Test8_2	5068.434	5068.434	5068.434	5068.434
3	1639.532	1639.532	1639.532	1639.532	3	5232.919	5232.919	5232.833	5232.919
4	1693.195	1693.195	1692.378	1693.195	4	5310.356	5310.356	5309.691	5310.265
5	1719.057	1719.057	1718.145	1718.883	5	5349.222	5349.222	5346.560	5349.043
Test4_2	2532.321	2532.321	2532.321	2532.321	Test9_2	1665.411	1665.411	1665.411	1665.411
3	2703.572	2703.572	2703.374	2703.572	3	1746.197	1746.197	1745.604	1746.197
4	2766.459	2766.459	2765.768	2766.371	4	1797.124	1797.124	1797.098	1797.015
5	2810.842	2810.842	2809.046	2810.694	5	1823.625	1823.625	1821.739	1823.002
Test5_2	2947.502	2947.502	2947.502	2947.502	Test10_2	2551.975	2551.975	2551.975	2551.975
3	3126.855	3126.855	3126.467	3126.855	3	2784.227	2784.227	2784.227	2784.227
4	3208.810	3208.810	3208.694	3208.694	4	2869.431	2869.431	2869.415	2869.431
5	3254.797	3254.797	3248.700	3254.562	5	2916.273	2916.273	2915.191	2916.087