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image2d.cc

00001 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE)
00002 //
00003 // This file is part of Olena.
00004 //
00005 // Olena is free software: you can redistribute it and/or modify it under
00006 // the terms of the GNU General Public License as published by the Free
00007 // Software Foundation, version 2 of the License.
00008 //
00009 // Olena is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012 // General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU General Public License
00015 // along with Olena.  If not, see <http://www.gnu.org/licenses/>.
00016 //
00017 // As a special exception, you may use this file as part of a free
00018 // software project without restriction.  Specifically, if other files
00019 // instantiate templates or use macros or inline functions from this
00020 // file, or you compile this file and link it with other files to produce
00021 // an executable, this file does not by itself cause the resulting
00022 // executable to be covered by the GNU General Public License.  This
00023 // exception does not however invalidate any other reasons why the
00024 // executable file might be covered by the GNU General Public License.
00025 
00026 #include <cstdlib>
00027 
00028 #include <string>
00029 
00030 #include <mln/core/image/image2d.hh>
00031 #include <mln/core/alias/neighb2d.hh>
00032 #include <mln/core/alias/window2d.hh>
00033 
00034 #include <mln/value/int_u8.hh>
00035 #include <mln/value/label_8.hh>
00036 
00037 #include <mln/morpho/gradient.hh>
00038 
00039 #include <mln/io/pgm/load.hh>
00040 #include <mln/io/pgm/save.hh>
00041 #include <mln/io/ppm/save.hh>
00042 #include <mln/labeling/colorize.hh>
00043 
00044 #include "chain.hh"
00045 
00046 int main(int argc, char* argv[])
00047 {
00048   if (argc != 4)
00049     {
00050       std::cerr << "usage: " << argv[0] << " input.pgm lambda output.ppm"
00051                 << std::endl;
00052       std::exit(1);
00053     }
00054   std::string input_filename = argv[1];
00055   unsigned lambda = atoi(argv[2]);
00056   std::string output_filename = argv[3];
00057 
00058   using namespace mln;
00059 
00060   typedef value::int_u8 val;
00061   typedef value::label_8 label;
00062   // Input and output types.
00063   typedef image2d<val> input;
00064   typedef mln_ch_value_(input, label) output;
00065   neighb2d nbh = c4();
00066   window2d win = win_c4p();
00067   label nbasins;
00068 
00069   std::cout << c4() << std::endl;
00070   std::cout << win_c4p() << std::endl;
00071 
00072   // Load, process, save.
00073   input ima = io::pgm::load<val>(input_filename);
00074   // Gradient.
00075   /* FIXME: Unfortunately, we cannot write
00076 
00077        morpho::gradient(ima, win)
00078 
00079      here, since MM only uses windows (yet?), not neighborhoods.  And
00080      we cannot either write
00081 
00082        morpho::gradient(ima, nbh.win()),
00083 
00084      since that window would not contain the center site...
00085      Therefore, this function asks for a window WIN matching the
00086      neighborhood NBH, plus the center site.
00087 
00088      A neighborhood `n' should provide a method `win_p()' returning a
00089      window corresponding to `n' plus the center site.  */
00090   input g = morpho::gradient(ima, win);
00091 
00092 #if 0
00093   // FIXME: get the name as argument.
00094   io::pgm::save(g, "apps/lena-g.pgm");
00095 #endif
00096 
00097   // Chain.
00098   output s = chain(g, nbh, lambda, nbasins);
00099   io::ppm::save(labeling::colorize(value::rgb8(), s, nbasins),
00100                 output_filename);
00101 }

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