[Olena-patches] olena-2.0-15-g1c0192b New morpher example: recording a watershed transform.

* apps/morphers/recorder-wst.cc: New. * apps/morphers/Makefile.am (noinst_PROGRAMS): Add recorder-wst. (recorder_wst_SOURCES): New. (MOSTLYCLEANFILES): lena-wst??????.ppm. --- milena/ChangeLog | 9 +++ milena/apps/morphers/Makefile.am | 3 + milena/apps/morphers/recorder-wst.cc | 106 ++++++++++++++++++++++++++++++++++ 3 files changed, 118 insertions(+), 0 deletions(-) create mode 100644 milena/apps/morphers/recorder-wst.cc diff --git a/milena/ChangeLog b/milena/ChangeLog index 4b904dc..2b98497 100644 --- a/milena/ChangeLog +++ b/milena/ChangeLog @@ -1,5 +1,14 @@ 2011-11-24 Roland Levillain &lt;roland(a)lrde.epita.fr&gt; + New morpher example: recording a watershed transform. + + * apps/morphers/recorder-wst.cc: New. + * apps/morphers/Makefile.am (noinst_PROGRAMS): Add recorder-wst. + (recorder_wst_SOURCES): New. + (MOSTLYCLEANFILES): lena-wst??????.ppm. + +2011-11-24 Roland Levillain &lt;roland(a)lrde.epita.fr&gt; + Work around decorated_image's lack of properties, for the recorder. * apps/morphers/recorder.hh diff --git a/milena/apps/morphers/Makefile.am b/milena/apps/morphers/Makefile.am index d448c1d..a3b9a41 100644 --- a/milena/apps/morphers/Makefile.am +++ b/milena/apps/morphers/Makefile.am @@ -25,15 +25,18 @@ AM_CXXFLAGS = $(APPS_CXXFLAGS) noinst_PROGRAMS = \ mask+channel \ recorder \ + recorder-wst \ mask+recorder mask_channel_SOURCES = mask+channel.cc recorder_SOURCES = recorder.cc recorder.hh +recorder_wst_SOURCES = recorder-wst.cc recorder.hh mask_recorder_SOURCES = mask+recorder.cc recorder.hh MOSTLYCLEANFILES = \ lena-mask-channel.ppm \ lena-fill??????.ppm \ + lena-wst??????.ppm \ lena-roi-fill??????.ppm # FIXME: Also produce movies (see comments in recorder.cc and diff --git a/milena/apps/morphers/recorder-wst.cc b/milena/apps/morphers/recorder-wst.cc new file mode 100644 index 0000000..e4aade5 --- /dev/null +++ b/milena/apps/morphers/recorder-wst.cc @@ -0,0 +1,106 @@ +// Copyright (C) 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. + +/// \file +/// \brief Exercise a morpher recording every change in the morphed +/// image with the watershed transform. +/// +/// To produce an AVI movie from the `lena-wst*.ppm' files, use: +/// +/// for f in lena-wst*ppm; convert $f -scale 2500% $(basename $f .ppm).png +/// mencoder "mf://lena-wst*.png" -o lena-wst.avi -ovc lavc -lavcopts vcodec=mjpeg +/// +/// The output `lena-wst.avi' can be embedded in a PDF file. */ + +#include <string> + +#include <mln/core/image/image2d.hh> +#include <mln/core/alias/neighb2d.hh> + +#include <mln/value/int_u8.hh> +#include <mln/value/label_8.hh> +#include <mln/value/rgb8.hh> +#include <mln/literal/colors.hh> + +#include <mln/morpho/gradient.hh> +#include <mln/morpho/closing/area.hh> +#include <mln/morpho/watershed/flooding.hh> + +#include <mln/test/predicate.hh> +#include <mln/pw/value.hh> + +#include <mln/labeling/colorize.hh> + +#include <mln/io/pgm/load.hh> +#include <mln/io/ppm/save.hh> + +#include "apps/morphers/recorder.hh" + +#include "apps/data.hh" + + +int main() +{ + using namespace mln; + using mln::value::int_u8; + using mln::value::label_8; + + typedef image2d<int_u8> I; + I lena = io::pgm::load<int_u8>(MLN_IMG_DIR "/tiny.pgm"); + + // Gradient. + I grad = morpho::gradient(lena, win_c4p()); + // Simplification of the gradient. + unsigned lambda = 5; + I closed_grad = morpho::closing::area(grad, c4(), lambda); + // Attach recorder to closed gradient. + decorated_image< I, recorder<I> > closed_grad_rec = record(closed_grad); + + // Watershed transform. + typedef label_8 L; + L nbasins; + typedef mln_ch_value_(I, L) J; + decorated_image< J, recorder<J> > wst_rec = + morpho::watershed::flooding(closed_grad_rec, c4(), nbasins); + std::cout << nbasins << std::endl; + + // Dump recorded frames. + /* FIXME: Hand-made (it partly duplicates ppm::save() for + decorated_image's). We should be able to process sequences of + images. */ + for (size_t i = 0; i < wst_rec.decoration().sequence.size(); ++i) + { + J frame = wst_rec.decoration().sequence[i]; + + // Skip ``empty'' frames. + if (test::predicate(frame.domain(), pw::value(frame) == 0)) + continue; + + std::stringstream s; + s << std::setfill ('0') << std::setw (6) << i; + io::ppm::save(labeling::colorize(value::rgb8(), frame, nbasins), + std::string("lena-wst") + s.str() + ".ppm"); + } +} -- 1.7.2.5