26 #include <mln/core/image/image2d.hh>
27 #include <mln/core/image/dmorph/sub_image.hh>
28 #include <mln/core/alias/neighb2d.hh>
29 #include <mln/core/var.hh>
30 #include <mln/value/int_u8.hh>
31 #include <mln/make/image2d.hh>
33 #include <mln/debug/iota.hh>
35 #include <mln/morpho/elementary/gradient_internal.hh>
47 int_u8 ref_[9] = { 0, 1, 1,
53 mln_assertion(gra == ref);
57 bool ref_[9] = { 0, 0, 0,
63 data::fill(msk, pw::value(ima) >= pw::cst(5u));
65 mln_assertion(gra == ref);