Multilevel Image Segmentation Based on an Improved Firefly Algorithm

Table 6

Stability of the four methods.

Test images		DPSO		HDE		FA		IFA
			std		std		std		std
Lena	2	1993.285	0.067	1993.294	0	1993.294	0	1993.294	0
	3	2162.955	0.098	2162.923	0.371	2162.980	0	2162.980	0
	4	2228.640	1.977	2229.134	1.293	2229.132	0.633	2229.137	0.633
	5	2253.548	0.618	2252.909	2.887	2252.070	3.977	2253.659	0.402
Cameraman	2	3650.334	0.012	3650.335	0	3650.335	0	3650.335	0
	3	3725.571	0.604	3725.711	0.027	3725.714		3725.715	0
	4	3780.562	0.367	3780.643	0.708	3780.640	0.214	3780.673
	5	3811.808	0.531	3810.690	1.072	3810.155	2.903	3811.754	1.353
Baboon	2	1712.177	0	1712.177	0	1712.177	0	1712.177	0
	3	1805.266	1.131	1805.381	0.465	1805.494	0.199	1805.536	0
	4	1858.116	1.985	1858.413	0.842	1858.409	0.196	1858.477
	5	1887.642	1.801	1885.519	1.726	1885.272	4.185	1887.956	0.674
Peppers	2	2532.321	0	2532.321	0	2532.321	0		0
	3	2703.459	0.672	2703.408	0.827	2703.572	0	2703.571
	4	2766.232	1.396	2766.137	1.869	2766.417	0.171	2766.455
	5	2810.306	1.777	2808.751	1.802	2810.659	0.296	2810.840
QFN1	2	8639.842	0	8639.842	0	8639.842	0	8639.842	0
	3	8712.645	0.268	8712.658		8712.685		8712.686	0
	4	8744.050	0.364	8742.127		8744.149		8744.160
	5	8759.312	0.147	8759.139		8759.179	0.247	8759.340
QFN2	2	9863.972	0	9863.964		9863.972	0	9863.972	0
	3	9925.368	0.115	9925.385		9925.391		9925.391
	4	9953.760	0.210	9953.812	0.844	9953.825		9953.833
	5	9967.785	0.179	9967.803	0.917	9967.682	0.213	9967.851
QFN3	2	9303.764	0	9303.764	0	9303.764	0	9303.764	0
	3	9376.479	0.050			9376.489		9376.491
	4	9408.861	0.088	9408.356	0.239	9408.849	0.131	9408.903
	5	9425.208	0.255	9425.117	0.685	9425.128	0.283	9425.270