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

Table 1

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

-Means	Cluster 1	Cluster 2	Cluster 3	Cluster 4	Metrics
Ground truth
					Best BAcc.: 0.85028; Mean BAcc: 0.74197; Mean sen.: 0.62917; Mean spe.: 0.81776; Avg. time: 3.8598
n					Best BAcc.: 0.93637; Mean BAcc: 0.82969; Mean sen.: 0.53766; Mean spe.: 0.88299; Avg. time: 1.5083
					Best BAcc.: 0.86040; Mean BAcc: 0.7717; Mean sen.: 0.58555; Mean spe.: 0.85133; Avg. time: 3.5174
					Best BAcc.: 0.95228; Mean BAcc: 0.84635; Mean sen.: 0.71681; Mean spe.: 0.90009; Avg. time: 1.9523
YCrCb					Best BAcc.: 0.79657; Mean BAcc: 0.75988; Mean sen.: 0.64811; Mean spe.: 0.83186; Avg. time: 3.28
CrCb					Best BAcc.: 0.94294; Mean BAcc: 0.81556; Mean sen.: 0.61425; Mean spe.: 0.87505; Avg. time: 1.5142
					Best BAcc.: 0.91797; Mean BAcc: 0.85888; Mean sen.: 0.72094; Mean spe.: 0.90462; Avg. time: 1.4304
					Best BAcc.: 0.91816; Mean BAcc: 0.83095; Mean sen.: 0.50944; Mean spe.: 0.89749; Avg. time: 1.333
Orig					Best BAcc.: 0.91808; Mean BAcc: 0.76817; Mean sen.: 0.22684; Mean spe.: 0.96200; Avg. time: 0.7393
Mod					Best BAcc.: 0.96551; Mean BAcc: 0.87931; Mean sen.: 0.77377; Mean spe.: 0.90182; Avg. time (C): 1.4847; Avg. time (B): 2.3388