Re: [Olena-patches] milena r1661: Begin a process to extract arrays

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2008-01-14 Matthieu Garrigues <garrigues(a)lrde.epita.fr> Begin a process to extract arrays. * sandbox/garrigues/factures/array_global.cc: New. * sandbox/garrigues/factures/facture.pgm: An receipt image.

--- array_global.cc | 101 ++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++ 1 file changed, 101 insertions(+) Index: trunk/milena/sandbox/garrigues/factures/array_global.cc =================================================================== --- trunk/milena/sandbox/garrigues/factures/array_global.cc (revision 0) +++ trunk/milena/sandbox/garrigues/factures/array_global.cc (revision 1661) @@ -0,0 +1,101 @@ +// Copyright (C) 2008 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library 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/image2d.hh> +#include <mln/io/pgm/all.hh> +#include <mln/io/pbm/all.hh> +#include <mln/geom/resize.hh> +#include <mln/display/all.hh> +#include <mln/value/int_u8.hh> +#include <mln/morpho/closing.hh> +#include <mln/win/rectangle2d.hh> + +#include <mln/pw/all.hh> +#include <mln/core/inplace.hh> +#include <mln/level/stretch.hh> +#include <mln/labeling/level.hh> +#include <mln/core/neighb2d.hh> + +#include <mln/accu/all.hh> + +int main() +{ + using namespace mln; + using namespace mln; + + typedef image2d<bool> ima2d_bool; + typedef image2d<unsigned> ima2d_unsigned; + + image2d<value::int_u8> in; + + io::pgm::load(in , "facture.pgm");

+ + // Resize 50%.

+ image2d<value::int_u8> small = in; //geom::resize(in, 0.5); + + // Binarisation.

+ ima2d_bool bin(small.domain()); + level::paste(inplace(pw::value(small) > pw::cst(50) | small.domain()), bin); + + // Labeling. + unsigned nlabels; + image2d<unsigned> labels = labeling::level(bin, true, c4(), nlabels); + + // Get the caracteristics of the connected components.

+ std::vector< accu::pair_< accu::bbox<point2d>, accu::count_<point2d> > > caracteristics(nlabels); + mln_fwd_piter_(ima2d_unsigned) p(labels.domain()); + for_all(p) + caracteristics[labels(p)].take(p); + + // Filter the connected components. + std::vector<bool> is_array(nlabels); + for (int i = 0; i < nlabels; i++) + { + box_<point2d> b = caracteristics[i].to_result().first; + unsigned n = caracteristics[i].to_result().second; + float ratio; + if (b.pmax() == b.pmin() || n < 10) + { + is_array[i] = false; + continue; + } + + if (0 != (b.pmax()[1] - b.pmin()[1])) + ratio = float(b.pmax()[0] - b.pmin()[0]) / (b.pmax()[1] - b.pmin()[1]); + else + ratio = float(b.pmax()[1] - b.pmin()[1]) / (b.pmax()[0] - b.pmin()[0]); + + int area = (b.pmax()[0] - b.pmin()[0]) * (b.pmax()[1] - b.pmin() [1]); + is_array[i] = ratio < 0.1 || ratio > 10 || (float(n) / area) < 0.2; + } + + // Clean the image. + for_all(p) + bin(p) = is_array[labels(p)]; + + io::pbm::save(bin, "array.pbm"); +}

Index: trunk/milena/sandbox/garrigues/factures/facture.pgm =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Property changes on: trunk/milena/sandbox/garrigues/factures/ facture.pgm ___________________________________________________________________ Name: svn:mime-type + application/octet-stream