As I promised, I just posted my findings about
converting color image to black and white in
my experiment pages. I spend few days trying things
out. Images showed in that page are result of quick conversion only to
prove a technique. So do not expect top quality. It was more like prove of
concept. I also wanted to underline the fact that some images is more
difficult to convert than others. I certainly will try to convert different
color images to have more experience and to see what all is possible and
what are the constraints.