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

Table 3

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

-Means	Cluster 1	Cluster 2	Cluster 3	Cluster 4	Metrics
Ground truth
					Best BAcc.: 0.99587; Mean BAcc: 0.98778; Mean sen.: 0.93760; Mean spe.: 0.97967; Avg. time: 1.75579
n					Best BAcc.: 0.99518; Mean BAcc: 0.95903; Mean sen.: 0.61221; Mean spe.: 0.90010; Avg. time: 1.8469
					Best BAcc.: 0.99575; Mean BAcc: 0.99005; Mean sen.: 0.92404; Mean spe.: 0.98184; Avg. time: 1.113
					Best BAcc.: 0.99780; Mean BAcc: 0.96863; Mean sen.: 0.72131; Mean spe.: 0.92257; Avg. time: 1.5184
YCrCb					Best BAcc.: 0.99567; Mean BAcc: 0.98458; Mean sen.: 0.71123; Mean spe.: 0.97607; Avg. time: 1.84769
CrCb					Best BAcc.: 0.99688; Mean BAcc: 0.96830; Mean sen.: 0.61425; Mean spe.: 0.92157; Avg. time: 1.286
					Best BAcc.: 0.97252; Mean BAcc: 0.90427; Mean sen.: 0.82520; Mean spe.: 0.94918; Avg. time: 1.41410
					Best BAcc.: 0.97236; Mean BAcc: 0.90964; Mean sen.: 0.81605; Mean spe.: 0.95333; Avg. time: 1.1394
Orig					Best BAcc.: 0.92121; Mean BAcc: 0.84475; Mean sen.: 0.75755; Mean spe.: 0.86620; Avg. time: 1.3613
Mod					Best BAcc.: 0.99589; Mean BAcc: 0.99259; Mean sen.: 0.94847; Mean spe.: 0.98287; Avg. time (C): 1.7464; Avg. time (B): 3.166