The apertures in the selected segmentations are then modified by minimizing {HEAD ~ total leaf movement} relative to {TAIL ~ the selected segmentations}, and subject to physical constraints such as a maximum leaf movement constraint or interdigitation constraint 
The apertures in the selected segmentations are then modified by minimizing { HEAD ~ total leaf movement } relative to { TAIL ~ the selected segmentations } , and subject to physical constraints such as a maximum leaf movement constraint or interdigitation constraint
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH