26 #ifndef MLN_EXTRACT_BLUE_HH
27 # define MLN_EXTRACT_BLUE_HH
33 # include <mln/core/image/vmorph/thru_image.hh>
34 # include <mln/fun/meta/blue.hh>
43 thru_image< I, meta::blue<mln_value(I)> >
46 # ifndef MLN_INCLUDE_ONLY
49 thru_image< I, meta::blue<mln_value(I)> >
52 typedef meta::blue<mln_value(I)> blue_t;
53 thru_image<I, blue_t> result(exact(ima), blue_t());
57 # endif // ! MLN_INCLUDE_ONLY
63 #endif // ! MLN_EXTRACT_BLUE_HH