The value of the elements in the resulting data array indicate {HEAD ~ the brightness} of their corresponding pixels in {TAIL ~ the image array} 51 
The value of the elements in the resulting data array indicate { HEAD ~ the brightness } of their corresponding pixels in { TAIL ~ the image array } 51
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH