Journal of Applied Mathematics

Research Article

Multilevel Thresholding Segmentation Based on Harmony Search Optimization

Table 16

Comparisons between HSMA, GA, PSO, and BF, applied over the selected test images using Otsu’s method.


Image		HSMA			GA			PSO			BF
Image		PSNR	STD	Mean	PSNR	STD	Mean	PSNR	STD	Mean	PSNR	STD	Mean

Camera man	2	17.247		3651.9	17.048	0.0232	3604.5	17.033	0.0341	3598.3	17.058	0.0345	3590.9
	3	20.211		3727.4	17.573	0.1455	3678.3	19.219	0.2345	3662.7	20.035	0.2459	3657.5
	4	21.533		3782.4	20.523	0.2232	3781.5	21.254	0.3142	3777.4	21.209	0.4560	3761.4
	5	23.282		3813.7	21.369	0.4589	3766.4	22.095	0.5089	3741.6	22.237	0.5089	3789.8

Lena	2	15.401		1964.4	15.040	0.0049	1960.9	15.077	0.0033	1961.4	15.031		1961.5
	3	17.427		2131.4	17.304	0.1100	2126.4	17.276	0.0390	2127.7	17.401	0.0061	2128.0
	4	18.763		2194.9	17.920	0.2594	2173.7	18.305	0.1810	2180.6	18.507	0.0081	2189.0
	5	19.443		2218.7	18.402	0.3048	2196.2	18.770	0.2181	2212.5	19.001	0.0502	2215.6

Baboon	2	15.422		1548.1	15.304	0.0031	1547.6	15.088	0.0077	1547.9	15.353		1548.0
	3	17.709		1638.3	17.505	0.1750	1633.5	17.603	0.0816	1635.3	17.074	0.0287	1637.0
	4	20.289		1692.1	18.708	0.2707	1677.7	19.233	0.0853	1684.3	19.654	0.0336	1690.7
	5	21.713		1717.5	20.203	0.3048	1712.9	20.526	0.1899	1712.9	21.160	0.1065	1716.7

Hunter	2	17.875		3054.2	17.088	0.0470	3064.1	17.932	0.2534	3064.1	17.508	0.0322	3064.1
	3	20.350		3213.4	20.045	0.1930	3212.9	19.940	0.9727	3212.4	20.350	0.9627	3213.4
	4	22.203		3269.5	20.836	0.6478	3268.4	21.128	2.2936	3266.3	21.089	2.2936	3266.3
	5	23.703		3308.1	21.284	1.6202	3305.6	22.026	4.1811	3276.3	22.804	3.6102	3291.1

Butterfly	2	13.934		1553.0	13.007	0.0426	1553.0	13.092	0.0846	1553.0	13.890	0.0643	1553.0
	3	16.932		1669.2	15.811	0.3586	1669.0	17.261	2.6268	1665.7	17.285	1.2113	1667.2
	4	19.259		1708.3	17.104	0.6253	1709.9	17.005	3.7976	1702.9	17.128	2.2120	1707.0
	5	21.450		1728.0	18.593	0.5968	1734.4	18.099	6.0747	1730.7	18.9061	3.5217	1733.0