[Olena-patches] last-svn-commit-142-g4bf89fb Add a new routine to highlight text areas in an image.

* scribo/debug/highlight_text_area.hh: New. * scribo/src/debug/Makefile.am, * scribo/src/debug/highlight_text_area.cc: New tool. * scribo/src/text_in_picture.cc: Make use of this new routine. --- scribo/ChangeLog | 11 + scribo/debug/highlight_text_area.hh | 255 ++++++++++++++++++++ scribo/src/debug/Makefile.am | 15 +- .../subsample.cc => debug/highlight_text_area.cc} | 62 ++++-- scribo/src/text_in_picture.cc | 53 +---- 5 files changed, 329 insertions(+), 67 deletions(-) create mode 100644 scribo/debug/highlight_text_area.hh copy scribo/src/{preprocessing/subsample.cc => debug/highlight_text_area.cc} (57%) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index f91986a..355b467 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,3 +1,14 @@ +2010-06-15 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + + Add a new routine to highlight text areas in an image. + + * debug/highlight_text_area.hh: New. + + * src/debug/Makefile.am, + * src/debug/highlight_text_area.cc: New tool. + + * src/text_in_picture.cc: Make use of this new routine. + 2010-06-03 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; * src/README: New. diff --git a/scribo/debug/highlight_text_area.hh b/scribo/debug/highlight_text_area.hh new file mode 100644 index 0000000..5ab15b9 --- /dev/null +++ b/scribo/debug/highlight_text_area.hh @@ -0,0 +1,255 @@ +// Copyright (C) 2010 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. + +#ifndef SCRIBO_DEBUG_HIGHLIGHT_TEXT_AREA_HH +# define SCRIBO_DEBUG_HIGHLIGHT_TEXT_AREA_HH + +/// \file +/// +/// Darken an image and highlight the text areas. + +# include <mln/core/concept/image.hh> +# include <mln/core/concept/function.hh> + +# include <mln/draw/box.hh> + +# include <mln/data/fill.hh> +# include <mln/data/transform.hh> + +# include <mln/literal/colors.hh> + +# include <mln/value/rgb8.hh> + +# include <scribo/core/component_set.hh> +# include <scribo/core/line_set.hh> + + +namespace scribo +{ + + namespace debug + { + + using namespace mln; + + /*! \brief Darken an image and highlight valid lines. + + \param[in] input An image. + \param[in] bbox An array of text area bounding boxes. + + \return a color image with highlighted text areas. + + */ + template <typename I> + mln_ch_value(I, value::rgb8) + highlight_text_area(const Image<I>& input_, + const mln::util::array<box<mln_site(I)> >& bbox); + + + /*! \brief Darken an image and highlight valid lines. + + \param[in] input An image. + \param[in] lines A line set. + + \return a color image with highlighted text areas. + + */ + template <typename I, typename L> + mln_ch_value(I, value::rgb8) + highlight_text_area(const Image<I>& input_, + const line_set<L>& lines); + + /*! \brief Darken an image and highlight valid lines. + + This overload is useful if you do know that all the components + are text. + + \param[in] input An image. + \param[in] components A component set. + + \return a color image with highlighted text areas. + + */ + template <typename I, typename L> + mln_ch_value(I, value::rgb8) + highlight_text_area(const Image<I>& input_, + const scribo::component_set<L>& components); + + +# ifndef MLN_INCLUDE_ONLY + + namespace internal + { + + template <typename M, typename R> + struct mask_non_text + : Function_v2v<mask_non_text<M, R> >, + private mlc_is(mln_value(M), bool)::check_t + { + typedef R result; + + mask_non_text(const Image<M>& mask) + : mask_(exact(mask)), p_(mask_) + { + p_.start(); + } + + result operator()(const result& v) const + { + bool b = p_.val(); + p_.next(); + if (!b) + return v / 2; + else + return v; + + } + + M mask_; + mutable mln_pixter(M) p_; + }; + + } // end of namespace scribo::debug::internal + + + + template <typename I> + mln_ch_value(I, value::rgb8) + highlight_text_area(const Image<I>& input_, + const mln::util::array<box<mln_site(I)> >& bbox) + { + trace::entering("scribo::debug::highlight_text_area"); + + const I& input = exact(input_); + + mln_precondition(input.is_valid()); + mlc_is(mln_value(I), value::rgb8)::check(); + + typedef mln_ch_value(I, bool) mask_t; + mask_t mask; + initialize(mask, input); + data::fill(mask, false); + + for_all_elements(i, bbox) + data::fill((mask | bbox(i)).rw(), true); + + internal::mask_non_text<mask_t, mln_value(I)> f(mask); + mln_concrete(I) output = data::transform(input, f); + + for_all_elements(i, bbox) + mln::draw::box(output, bbox(i), literal::red); + + trace::exiting("scribo::debug::highlight_text_area"); + return output; + } + + + template <typename I, typename L> + mln_ch_value(I, value::rgb8) + highlight_text_area(const Image<I>& input_, + const line_set<L>& lines) + { + trace::entering("scribo::debug::highlight_text_area"); + + const I& input = exact(input_); + + mln_precondition(input.is_valid()); + mlc_is(mln_value(I), value::rgb8)::check(); + + typedef mln_ch_value(I, bool) mask_t; + mask_t mask; + initialize(mask, input); + data::fill(mask, false); + + for_all_lines(i, lines) + { + if (! lines(i).is_valid() + || lines(i).tag() != line::None + || lines(i).type() != line::Text) + continue; + + data::fill((mask | lines(i).bbox()).rw(), true); + } + + internal::mask_non_text<mask_t, mln_value(I)> f(mask); + mln_concrete(I) output = data::transform(input, f); + + for_all_lines(i, lines) + { + if (! lines(i).is_valid() + || lines(i).tag() != line::None + || lines(i).type() != line::Text) + continue; + + mln::draw::box(output, lines(i).bbox(), literal::red); + } + + trace::exiting("scribo::debug::highlight_text_area"); + return output; + } + + + template <typename I, typename L> + mln_ch_value(I, value::rgb8) + highlight_text_area(const Image<I>& input_, + const scribo::component_set<L>& components) + { + trace::entering("scribo::debug::highlight_text_area"); + + const I& input = exact(input_); + + mln_precondition(input.is_valid()); + mlc_is(mln_value(I), value::rgb8)::check(); + + typedef mln_ch_value(I, bool) mask_t; + mask_t mask; + initialize(mask, input); + data::fill(mask, false); + + for_all_comps(i, components) + if (components(i).is_valid()) + data::fill((mask | components(i).bbox()).rw(), true); + + internal::mask_non_text<mask_t, mln_value(I)> f(mask); + mln_ch_value(I, value::rgb8) output = data::transform(input, f); + + for_all_comps(i, components) + if (components(i).is_valid()) + mln::draw::box(output, components(i).bbox(), literal::red); + + trace::exiting("scribo::debug::highlight_text_area"); + return output; + } + + +# endif // ! MLN_INCLUDE_ONLY + + + } // end of namespace scribo::debug + +} // end of namespace scribo + + +#endif // ! SCRIBO_DEBUG_HIGHLIGHT_TEXT_AREA_HH diff --git a/scribo/src/debug/Makefile.am b/scribo/src/debug/Makefile.am index bb55bfb..6055ed6 100644 --- a/scribo/src/debug/Makefile.am +++ b/scribo/src/debug/Makefile.am @@ -1,4 +1,5 @@ -# Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE). +# Copyright (C) 2009, 2010 EPITA Research and Development Laboratory +# (LRDE). # # This file is part of Olena. # @@ -74,3 +75,15 @@ show_objects_large_small_SOURCES = show_objects_large_small.cc show_objects_small_SOURCES = show_objects_small.cc show_objects_thick_SOURCES = show_objects_thick.cc show_objects_thin_SOURCES = show_objects_thin.cc + + +if HAVE_MAGICKXX + + bin_PROGRAMS += highlight_text_area + highlight_text_area_SOURCES = highlight_text_area.cc + highlight_text_area_CPPFLAGS = $(AM_CPPFLAGS) \ + `Magick++-config --cppflags` + highlight_text_area_LDFLAGS = $(AM_LDFLAGS) \ + -lpthread `Magick++-config --libs` + +endif HAVE_MAGICKXX \ No newline at end of file diff --git a/scribo/src/preprocessing/subsample.cc b/scribo/src/debug/highlight_text_area.cc similarity index 57% copy from scribo/src/preprocessing/subsample.cc copy to scribo/src/debug/highlight_text_area.cc index fde31e0..817effa 100644 --- a/scribo/src/preprocessing/subsample.cc +++ b/scribo/src/debug/highlight_text_area.cc @@ -23,23 +23,26 @@ // 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/core/alias/neighb2d.hh> -#include <mln/io/magick/load.hh> -#include <mln/io/ppm/save.hh> -#include <mln/subsampling/antialiased.hh> +# include <iostream> +# include <fstream> -#include <mln/value/rgb8.hh> - -#include <scribo/debug/usage.hh> +# include <mln/core/image/image2d.hh> +# include <mln/util/array.hh> +# include <mln/core/alias/box2d.hh> +# include <mln/make/box2d.hh> +# include <mln/io/ppm/save.hh> +# include <mln/io/magick/load.hh> +# include <mln/value/rgb8.hh> +# include <scribo/debug/highlight_text_area.hh> +# include <scribo/debug/usage.hh> const char *args_desc[][2] = { { "input.*", "An image." }, - { "ratio", "Scale ratio." }, - { "output.ppm", "A color image." }, + { "ocr_text.txt", "OCR result which must contain text boxes coordinates." }, + { "output.ppm", "A color image with highlighted text areas." }, {0, 0} }; @@ -50,18 +53,45 @@ int main(int argc, char *argv[]) if (argc != 4) return scribo::debug::usage(argv, - "Subsample.", - "input.* ratio output.ppm", + "Highlight text areas in an image.", + "input.* ocr_text.txt output.ppm", args_desc); trace::entering("main"); - typedef image2d<value::rgb8> I; - I input; + image2d<value::rgb8> input; io::magick::load(input, argv[1]); - unsigned ratio = atoi(argv[2]); - io::ppm::save(mln::subsampling::antialiased(input, ratio), argv[3]); + + mln::util::array<box2d> bbox; + + std::ifstream file(argv[2]); + if (! file) + { + std::cerr << "error: file '" << argv[2] + << "' not found!"; + abort(); + } + + + while (! file.eof()) + { + int + pmin_row, pmin_col, + pmax_row, pmax_col; + + file >> pmin_row; + file >> pmin_col; + file >> pmax_row; + file >> pmax_col; + + std::string txt; + getline (file, txt); + + bbox.append(mln::make::box2d(pmin_row, pmin_col, pmax_row, pmax_col)); + } + + io::ppm::save(scribo::debug::highlight_text_area(input, bbox), argv[3]); trace::exiting("main"); } diff --git a/scribo/src/text_in_picture.cc b/scribo/src/text_in_picture.cc index 8ad4697..c47786c 100644 --- a/scribo/src/text_in_picture.cc +++ b/scribo/src/text_in_picture.cc @@ -86,6 +86,8 @@ #include <scribo/filter/object_groups_small.hh> #include <scribo/filter/object_groups_v_thickness.hh> +#include <scribo/debug/highlight_text_area.hh> + #include <scribo/debug/decision_image.hh> #include <scribo/debug/save_bboxes_image.hh> #include <scribo/debug/save_linked_bboxes_image.hh> @@ -153,55 +155,6 @@ namespace mln }; - struct mask_non_text : Function_v2v<mask_non_text> - { - typedef value::rgb8 result; - typedef image2d<bool> I; - - mask_non_text(const image2d<bool>& mask) - : mask_(mask), p_(mask_) - { - p_.start(); - } - - result operator()(const result& v) const - { - bool b = p_.val(); - p_.next(); - if (!b) - return v / 2; - else - return v; - - } - - I mask_; - mutable mln_pixter_(I) p_; - }; - - - template <typename I, typename L> - mln_concrete(I) - compute_highlight_image(const I& input_rgb, - const scribo::component_set<L>& components) - { - mln_ch_value(I, bool) mask; - initialize(mask, input_rgb); - data::fill(mask, false); - - for_all_comps(i, components) - if (components(i).is_valid()) - data::fill((mask | components(i).bbox()).rw(), true); - - mask_non_text f(mask); - mln_concrete(I) output = data::transform(input_rgb, f); - - for_all_comps(i, components) - if (components(i).is_valid()) - mln::draw::box(output, components(i).bbox(), literal::red); - - return output; - } template <typename I, typename L> mln_concrete(I) @@ -684,7 +637,7 @@ Common usage: ./text_in_photo_fast input.ppm output.ppm 1 1 1 1 1", comps.nelements()), argv[2]); - io::ppm::save(compute_highlight_image(input_rgb, comps), + io::ppm::save(scribo::debug::highlight_text_area(input_rgb, comps), out_base_dir + "_input_with_bboxes.ppm"); io::ppm::save(compute_text_image(input_rgb, comps), out_base_dir + "_out_text.ppm"); -- 1.5.6.5