A Novel Imperialist Competitive Algorithm for Multithreshold Image Segmentation

Table 4

The maximum values of Kapur’s objective values.

Example	ICA	PSO	GWO	TLBO	Example	ICA	PSO	GWO	TLBO
Test1_2	12.3466	12.3466	12.3463	12.3466	Test6_2	12.6616	12.6616	12.6616	12.6616
3	15.3183	15.3183	15.3183	15.3183	3	15.8436	15.8436	15.8431	15.8436
4	18.0123	18.0123	17.9996	18.0109	4	18.6570	18.6570	18.6481	18.6545
5	20.6095	20.6095	20.6008	20.6078	5	21.4315	21.4315	21.3996	21.4295
Test2_2	12.2115	12.2115	12.2115	12.2115	Test7_2	12.9606	12.9606	12.9605	12.9606
3	15.5039	15.5039	15.4997	15.5039	3	16.2204	16.2204	16.2198	16.2204
4	18.3121	18.3121	18.3072	18.3110	4	19.3650	19.3650	19.3181	19.3645
5	20.9088	20.9088	20.4932	20.9088	5	22.1924	22.1924	21.9295	22.1899
Test3_2	12.2178	12.2178	12.2178	12.2178	Test8_2	11.2873	11.2873	11.2873	11.2873
3	15.2792	15.2792	15.2750	15.2792	3	14.1185	14.1185	14.1148	14.1185
4	18.1267	18.1267	18.1216	18.1267	4	16.7098	16.7098	16.7087	16.7090
5	20.7896	20.7896	20.7226	20.7890	5	19.7066	19.7066	19.5136	19.7055
Test4_2	12.6346	12.6346	12.6346	12.6346	Test9_2	12.6390	12.6390	12.6390	12.6390
3	15.6887	15.6887	15.6887	15.6887	3	15.5952	15.5952	15.5952	15.5950
4	18.5394	18.5394	18.4917	18.5387	4	18.5295	18.5295	18.5183	18.5292
5	21.2818	21.2818	21.0860	21.2746	5	21.1922	21.1922	21.1899	21.1853
Test5_2	12.6357	12.6357	12.6355	12.6357	Test10_2	12.9682	12.9682	12.9682	12.9682
3	15.8115	15.8115	15.8075	15.8115	3	16.1254	16.1254	16.1145	16.1254
4	18.7441	18.7441	18.6589	18.7362	4	19.0579	19.0579	19.0300	19.0576
5	21.6195	21.6195	21.5462	21.6057	5	21.8090	21.8090	21.8043	21.8050