To see if I have understood well?, as it seems what you want to make is it to pass a picture in color to B & N, and does he ask if the best method is to make it by means of the scanner, or that another form?. Good I believe that one could make for some program of photographic retouch, but the truth is that it is preferable to have first in undoubtedly it is what wants to be made, the picture color it is a thing and the B & N is other, I say this since in a picture color one search a good game of colors and balanced composition, but when changing the colors they transform in gray that are very insipid in some cases, the B & N on the contrary uses the contrast of white and black going by all the ranges of gray