a storage unit for storing {HEAD ~ set values} for {TAIL ~ said plurality} of image processing units and image data to be processed by said plurality of image processing units 
for
a storage unit for storing { HEAD ~ set values } for { TAIL ~ said plurality } of image processing units and image data to be processed by said plurality of image processing units
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH