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

Table 11

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

-Means	Cluster 1	Cluster 2	Cluster 3	Cluster 4	Metrics
Ground truth
					Best BAcc.: 0.99323; Mean BAcc: 0.94312; Mean sen.: 0.81053; Mean spe.: 0.94599; Avg. time: 2.2399
n					Best BAcc.: 0.98536; Mean BAcc: 0.89529; Mean sen.: 0.59818; Mean spe.: 0.88083; Avg. time: 1.34869
					Best BAcc.: 0.99398; Mean BAcc: 0.95669; Mean sen.: 0.85852; Mean spe.: 0.95288; Avg. time: 1.33930
					Best BAcc.: 0.99830; Mean BAcc: 0.94054; Mean sen.: 0.78114; Mean spe.: 0.92947; Avg. time: 1.3225
YCrCb					Best BAcc.: 0.99438; Mean BAcc: 0.94116; Mean sen.: 0.80296; Mean spe.: 0.94756; Avg. time: 1.143
CrCb					Best BAcc.: 0.99645; Mean BAcc: 0.91684; Mean sen.: 0.70957; Mean spe.: 0.90729; Avg. time: 1.19459
					Best BAcc.: 0.96321; Mean BAcc: 0.90030; Mean sen.: 0.67543; Mean spe.: 0.94132; Avg. time: 2.8174
					Best BAcc.: 0.99215; Mean BAcc: 0.89926; Mean sen.: 0.65391; Mean spe.: 0.94095; Avg. time: 1.1508
Orig					Best BAcc.: 0.98262; Mean BAcc: 0.89173; Mean sen.: 0.50620; Mean spe.: 0.93380; Avg. time: 0.68540
Mod					Best BAcc.: 0.99826; Mean BAcc: 0.98679; Mean sen.: 0.91741; Mean spe.: 0.99612; Avg. time (C): 1.84471; Avg. time (B): 3.11008