Research Article

Improved Unsupervised Color Segmentation Using a Modified Color Model and a Bagging Procedure in -Means++ Algorithm

Table 7

Segmentation performance results for image “d” using -means++.

-MeansCluster 1Cluster 2Cluster 3Cluster 4Metrics

Ground truth

Best BAcc.: 0.95994
Mean BAcc: 0.86935
Mean sen.: 0.75575
Mean spe.: 0.90860
Avg. time: 1.76310

nBest BAcc.: 0.90987
Mean BAcc: 0.81386
Mean sen.: 0.54885
Mean spe.: 0.87593
Avg. time: 3.72300

Best BAcc.: 0.95932
Mean BAcc: 0.88656
Mean sen.: 0.78536
Mean spe.: 0.91907
Avg. time: 1.2676

Best BAcc.: 0.98018
Mean BAcc: 0.81514
Mean sen.: 0.85177
Mean spe.: 0.80258
Avg. time: 0.8469

YCrCbBest BAcc.: 0.96415
Mean BAcc: 0.86543
Mean sen.: 0.74899
Mean spe.: 0.90738
Avg. time: 1.87110

CrCbBest BAcc.: 0.98062
Mean BAcc: 0.81118
Mean sen.: 0.84099
Mean spe.: 0.80067
Avg. time: 0.9742

Best BAcc.: 0.90939
Mean BAcc: 0.78772
Mean sen.: 0.45141
Mean spe.: 0.85449
Avg. time: 1.25549

Best BAcc.: 0.92218
Mean BAcc: 0.78140
Mean sen.: 0.38454
Mean spe.: 0.87325
Avg. time: 1.144

OrigBest BAcc.: 0.91348
Mean BAcc: 0.80163
Mean sen.: 0.48664
Mean spe.: 0.86596
Avg. time: 0.5639

ModBest BAcc.: 0.97414
Mean BAcc: 0.87874
Mean sen.: 0.64856
Mean spe.: 0.92610
Avg. time (C): 1.9026
Avg. time (B): 2.6005