49 #include <mln/core/image/image2d.hh>
50 #include <mln/core/alias/point2d.hh>
51 #include <mln/core/alias/window2d.hh>
52 #include <mln/core/alias/neighb2d.hh>
54 #include <mln/util/graph.hh>
55 #include <mln/fun/i2v/array.hh>
56 #include <mln/util/site_pair.hh>
57 #include <mln/core/image/edge_image.hh>
59 #include <mln/morpho/line_gradient.hh>
60 #include <mln/morpho/closing/area_on_vertices.hh>
61 #include <mln/morpho/watershed/flooding.hh>
63 #include <mln/value/int_u8.hh>
64 #include <mln/value/int_u16.hh>
65 #include <mln/value/rgb8.hh>
66 #include <mln/literal/black.hh>
67 #include <mln/literal/colors.hh>
69 #include <mln/io/pgm/load.hh>
70 #include <mln/io/pgm/save.hh>
71 #include <mln/io/ppm/save.hh>
73 #include <mln/opt/at.hh>
75 #include "tests/data.hh"
90 const unsigned nrows = 100;
91 const unsigned ncols = 100;
92 const unsigned square_length = 3;
93 typedef int_u8 input_val_t;
96 for (
unsigned r = 0; r <
nrows; ++r)
97 for (
unsigned c = 0; c <
ncols; ++c)
99 ((r / square_length) % 2 == (c / square_length) % 2)
100 ? mln_min(input_val_t)
101 : mln_max(input_val_t);
118 typedef lg_ima_t::nbh_t nbh_t;
125 mln_assertion(nbasins == 1155);
136 typedef rgb8 output_val_t;
138 point2d output_pmin = input.domain().pmin();
139 point2d output_pmax(input.domain().pmax()[0] * 2,
140 input.domain().pmax()[1] * 2);
141 output_t output(
box2d(output_pmin, output_pmax));
148 input_val_t v = input(p);
151 output(q) = output_val_t(v, v, v);
154 mln_piter_(output_t) p_out(output.domain());
158 if (p_out[0] % 2 == 0 && p_out[1] % 2 == 1)
159 output(p_out) = (output(p_out +
left) + output(p_out +
right)) / 2;
161 if (p_out[0] % 2 == 1 && p_out[1] % 2 == 0)
162 output(p_out) = (output(p_out +
up) + output(p_out +
down)) / 2;
164 if (p_out[0] % 2 == 1 && p_out[1] % 2 == 1)
169 output(p_out +
dpoint2d(+1, +1))) / 4;
175 mln_piter_(wshed_t) pw(wshed.domain());
180 mln_psite_(lg_ima_t) pp(pw);
182 int row1 = pp.first()[0] * 2;
183 int col1 = pp.first()[1] * 2;
184 int row2 = pp.second()[0] * 2;
185 int col2 = pp.second()[1] * 2;
186 point2d q((row1 + row2) / 2, (col1 + col2) / 2);
188 output(q) = literal::red;
202 if (p_out[0] % 2 == 1 && p_out[1] % 2 == 1)
216 io::ppm::save(output,
"artificial_line_graph_image_wst-out.ppm");