The Scientific World Journal / 2014 / Article / Tab 3

Research Article

Improved Bat Algorithm Applied to Multilevel Image Thresholding

Table 3

Comparison of the mean values and standard deviations obtained for the PSO, DE, CS, FA, BA, and IBA based on Kapur’s entropy criterion for six test images over 50 runs.

Alg. BarbaraLiving roomBoatsGoldhillLakeAerial
Mean values St. Dev. Mean values St. Dev. Mean values St. Dev. Mean values St. Dev. Mean values St. Dev. Mean values St. Dev.

PSO 2 12.668336540 12.405792709 12.574798244 12.546393623 12.520359742 12.538208248
3 15.747087798 15.552015642 15.820679619 15.607747002 15.566286745 15.751881495
4 18.549612938 18.467328310 18.640100415 18.414173744 18.357505953 18.615899102
5 21.241857967 21.131564234 21.392020144 21.099092699 21.015922726 21.192396874

DE 2 12.668336540 12.405985592 12.574798244 12.546393623 12.520359742 12.538208248
3 15.747087798 15.552578874 15.820902860 15.607743578 15.566286745 15.751881495
4 18.556749938 18.470970822 18.655660844 18.603017275 18.365579671 18.615769177
5 21.245566656 21.149062508 21.401458219 21.409946039 21.024780111 21.210411012

CS 2 12.668336540 12.405985592 12.574798244 12.546393623 12.520359742 12.538208248
3 15.747087798 15.552622213 15.820902860 15.607747002 15.566286745 15.751881495
4 18.556786861 18.471055578 18.655733570 18.414197322 18.365636309 18.615899102
5 21.245645311 21.149400604 21.401608305 21.099125539 21.024962923 21.210455499

FA 2 12.668336540 12.405985592 12.574798244 12.546393623 12.520359742 12.538208248
3 15.747087798 15.552622213 15.820902860 15.607747002 15.566286745 15.751881495
4 18.556786861 18.471014902 18.655723798 18.414213765 18.365636309 18.615899102
5 21.245645311 21.149483979 21.401583877 21.099138996 21.024982760 21.210455499

BA 2 12.668336540 12.405885825 12.574798244 12.546393623 12.520359742 12.538208248
3 15.747087798 15.552622213 15.820902860 15.607747002 15.566286745 15.751881495
4 18.555593147 18.469796068 18.644796771 18.414213765 18.356346829 18.615899102
5 21.245645311 21.133082528 21.399205241 21.099138996 21.024982760 21.210452617

IBA 2 12.668336540 12.405985592 12.574798244 12.546393623 12.520359742 12.538208248
3 15.747087798 15.552622213 15.820902860 15.607747002 15.566286745 15.751881495
4 18.556786861 18.471055578 18.655733570 18.414213765 18.365636309 18.615899102
5 21.245645311 21.150302316 21.401608305 21.099138996 21.024982760 21.210455499

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