Fig. 6From: Lesion segmentation in breast ultrasound images using the optimized marked watershed methodDefinition of side windows. r is the radius of the window. a Side window in the continuous case. b The left (L) and right (R) side windows. c The up (U) and down (D) side windows. d The northeast (NE), northwest (NW), southeast (SE) and southwest (SW) side windowsBack to article page