Based on the histogram, color coefficients of red, green and blue channels are assigned to each image so that {HEAD ~ the final combination} of colors will produce {TAIL ~ a semi natural appearing composite image} 
Based on the histogram , color coefficients of red , green and blue channels are assigned to each image so that { HEAD ~ the final combination } of colors will produce { TAIL ~ a semi natural appearing composite image }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL