Table 1.

Features initially analysed for breast density segmentation. The different window sizes used when computing each textural feature are indicated

Type	Feature	Window size (in mm)
Intensity	Original
	Corrected
Morphologic	Position x, y
	Distance to skin
	Distance to nipple
	Angle to nipple
Texture	Histogram moments 1, 2, 3	0.84, 1.96, 4.20, 5.88, 9.80, 14.28, 19.88
	Histogram entropy	0.84, 1.96, 4.20, 5.88, 9.80, 14.28, 19.88
	Laplacian moments 1, 2, 3	0.84, 1.96, 4.20, 5.88, 9.80, 14.28, 19.88
	Laplacian homogeneity and entropy	0.84, 1.96, 4.20, 5.88, 9.80, 14.28, 19.88
	Co-occurrence matrices	1.96, 4.20, 9.80, 11.48, 19.88
	Fractal dimension	1.96, 4.20, 9.80, 11.48, 19.88
	Quaternion wavelets	1.96, 4.20, 9.80, 11.48, 19.88
	Local binary patterns	4.20, 11.48