Table 2.

3DIRCAD database: performance of the proposed method using five configurations of training data at the processing stage and three configurations of the segmentation system

Training data		Dice score
Training images	Training labels	Three-stage system	Without CNNs	Without contrast enhancement
Ground truth images	Ground truth images	0.81	0.76	0.79
Otsu-based binary images	Otsu-based binary images	0.85	0.81	0.80
Foreground images	Foreground images	0.83	0.77	0.80
Grayscale images	Two-class k-means clustered images	0.90	0.81	0.80
Grayscale images	Three-class k-means clustered images	0.92	0.83	0.82