Multilevel Image Segmentation Based on an Improved Firefly Algorithm

Table 5

Computational time of the four methods.

Test images		Computational time (s)
		DPSO	HDE	FA	IFA
Lena	2	0.606	0.599	0.719	0.571
	3	0.865	0.734	1.312	0.761
	4	1.241	1.562	1.438	1.107
	5	1.566	1.799	1.753	1.327
Cameraman	2	0.633	0.704	0.761	0.548
	3	0.969	1.027	1.346	0.772
	4	1.337	1.302	1.592	1.134
	5	1.945	1.699	1.728	1.361
Baboon	2	0.599	0.513	0.799	0.574
	3	0.969	1.057	1.222	0.874
	4	1.292	1.322	1.377	0.989
	5	1.556	1.447	1.665	1.286
Peppers	2	0.677	0.628	0.816	0.609
	3	0.929	0.816	1.105	0.805
	4	1.026	0.973	1.389	0.894
	5	1.877	1.291	1.509	1.031
QFN1	2	0.469	0.448	0.611	0.439
	3	0.718	0.841	1.099	0.732
	4	1.021	1.157	1.251	0.991
	5	1.343	1.329	2.100	1.025
QFN2	2	0.386	0.653	0.756	0.531
	3	0.750	0.811	1.018	0.603
	4	0.933	1.125	1.355	1.037
	5	1.498	1.372	1.867	1.132
QFN3	2	0.487	0.779	0.881	0.571
	3	0.738	1.115	1.168	0.669
	4	1.045	1.503	1.618	0.850
	5	1.075	1.718	1.778	1.199