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

Table 5

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

-Means	Cluster 1	Cluster 2	Cluster 3	Cluster 4	Cluster 5	Metrics
Ground truth
						Best BAcc.: 0.95833; Mean BAcc: 0.84450; Mean sen.: 0.58841; Mean spe.: 0.90370; Avg. time: 3.72890
n						Best BAcc.: 0.97927; Mean BAcc: 0.90491; Mean sen.: 0.64566; Mean spe.: 0.94043; Avg. time: 2.6793
						Best BAcc.: 0.95947; Mean BAcc: 0.84665; Mean sen.: 0.58651; Mean spe.: 0.90504; Avg. time: 2.82420
						Best BAcc.: 0.984993; Mean BAcc: 0.96148; Mean sen.: 0.88592; Mean spe.: 0.97132; Avg. time: 1.0364
YCrCb						Best BAcc.: 0.96193; Mean BAcc: 0.84934; Mean sen.: 0.64811; Mean spe.: 0.90670; Avg. time: 3.2729
CrCb						Best BAcc.: 0.98338; Mean BAcc: 0.93794; Mean sen.: 0.86600; Mean spe.: 0.95268; Avg. time: 1.0914
						Best BAcc.: 0.97474; Mean BAcc: 0.88877; Mean sen.: 0.49019; Mean spe.: 0.95910; Avg. time: 3.01899
						Best BAcc.: 0.97121; Mean BAcc: 0.86365; Mean sen.: 0.42246; Mean spe.: 0.94520; Avg. time: 3.0209
Orig						Best BAcc.: 0.96433; Mean BAcc: 0.92863; Mean sen.: 0.73995; Mean spe.: 0.94777; Avg. time: 0.66040
Mod						Best BAcc.: 0.98993; Mean BAcc: 0.94321; Mean sen.: 0.76518; Mean spe.: 0.96808; Avg. time (C): 1.9414; Avg. time (B): 2.5229