Table 3.

The fitness values of the algorithms on the benchmark images.

Level	Image	AEO	EO	HHO	ChOA	SSA
2	Airplane	0.2298	0.2299	0.2299	0.2727	0.2299
	Barbara	0.0252	0.0277	0.0325	0.0707	0.0285
	Cameraman	0.4196	0.4184	0.4194	0.4741	0.4191
	Chelsea	0.2930	0.2935	0.2931	0.3782	0.2932
	Coffee	0.7046	0.7054	0.7049	0.7969	0.7049
	Livingroom	0.5071	0.5076	0.5072	0.6008	0.5073
	Mandrill	0.2958	0.2964	0.2967	0.3601	0.2965
	Monarch	0.3592	0.3580	0.3563	0.4362	0.3561
	Peppers	0.5083	0.5085	0.5087	0.5668	0.5085
3	Airplane	0.2298	0.2301	0.2299	0.2770	0.2299
	Barbara	0.0276	0.0252	0.0286	0.0715	0.0282
	Cameraman	0.4192	0.4185	0.4193	0.4903	0.4190
	Chelsea	0.2930	0.2934	0.2933	0.3508	0.2932
	Coffee	0.7046	0.7051	0.7049	0.7859	0.7049
	Livingroom	0.5071	0.5077	0.5071	0.5638	0.5072
	Mandrill	0.2958	0.2963	0.2961	0.3868	0.2961
	Monarch	0.3592	0.3566	0.3648	0.4199	0.3602
	Peppers	0.5083	0.5084	0.5083	0.5684	0.5083
4	Airplane	0.2298	0.2301	0.2344	0.2703	0.2314
	Barbara	0.0309	0.0297	0.0358	0.0669	0.0321
	Cameraman	0.4191	0.4194	0.4187	0.4606	0.4192
	Chelsea	0.2930	0.2935	0.2931	0.3962	0.2932
	Coffee	0.7046	0.7051	0.7049	0.8135	0.7049
	Livingroom	0.5071	0.5076	0.5072	0.5569	0.5072
	Mandrill	0.2958	0.2962	0.3009	0.3860	0.2976
	Monarch	0.3592	0.3595	0.3577	0.4167	0.3576
	Peppers	0.5083	0.5086	0.5113	0.5796	0.5094
5	Airplane	0.2298	0.2300	0.2301	0.4224	0.2301
	Barbara	0.0270	0.0262	0.0316	0.0607	0.0283
	Cameraman	0.4196	0.4192	0.4190	0.4591	0.4197
	Chelsea	0.2930	0.2939	0.2945	0.3761	0.2941
	Coffee	0.7046	0.7052	0.7052	0.7661	0.7052
	Livingroom	0.5071	0.5075	0.5071	0.5963	0.5072
	Mandrill	0.2958	0.2963	0.2961	0.4242	0.2961
	Monarch	0.3577	0.3579	0.3572	0.4378	0.3571
	Peppers	0.5083	0.5085	0.5129	0.6182	0.5099

Significant values are in bold.