log.cc

// Copyright (C) 2007, 2008, 2009, 2010, 2011 EPITA Research and Development
// Laboratory (LRDE)
//
// This file is part of Olena.
//
// Olena is free software: you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, version 2 of the License.
//
// Olena is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#include <mln/core/image/image2d.hh>
#include <mln/value/int_u8.hh>

#include <mln/io/pgm/load.hh>
#include <mln/io/pgm/save.hh>

#include <mln/border/thickness.hh>
#include <mln/linear/log.hh>

#include <mln/estim/min_max.hh>
#include <mln/data/stretch.hh>

#include "tests/data.hh"


int main()
{
  using namespace mln;
  using value::int_u8;

  border::thickness = 2;

  image2d<int_u8> lena, out;
  io::pgm::load(lena, MLN_IMG_DIR "/lena.pgm");

  image2d<float> tmp = linear::LoG_5x5(lena);
  {
    float min, max;
    estim::min_max(tmp, min, max);
    mln_assertion(min == -925 && max == 1247);
  }

  out = data::stretch(int_u8(), tmp);
  io::pgm::save(out, "log-out.pgm");
  {
    int_u8 min, max;
    estim::min_max(out, min, max);
    mln_assertion(min == 0u && max == 255u);
  }
}