* scribo/primitive/extract/alignments.hh,
* scribo/primitive/link/internal/dmax_hrules.hh,
* scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh,
* scribo/primitive/link/merge_double_link_closest_aligned.hh: New.
* src/primitive/extract/alignments.cc: New example.
* tests/data.hh.in: Add a new macro.
* tests/img/alignment_1.png,
* tests/img/alignment_2.png,
* tests/img/alignment_3.png,
* tests/img/alignment_4.png,
* tests/primitive/extract/alignment_1.ref.pbm,
* tests/primitive/extract/alignment_2.ref.pbm,
* tests/primitive/extract/alignment_3.ref.pbm,
* tests/primitive/extract/alignment_4.ref.pbm: New auxiliary data
for tests.
* src/primitive/extract/Makefile.am,
* tests/primitive/Makefile.am,
* tests/primitive/extract/Makefile.am: Add new targets.
* tests/primitive/extract/alignments.cc: New test.
---
scribo/ChangeLog | 29 +
scribo/scribo/primitive/extract/alignments.hh | 1106 ++++++++++++++++++++
.../scribo/primitive/link/internal/dmax_hrules.hh | 100 ++
.../link_single_dmax_ratio_aligned_delta_base.hh | 159 +++
.../link/merge_double_link_closest_aligned.hh | 157 +++
scribo/src/primitive/extract/Makefile.am | 11 +
scribo/src/primitive/extract/alignments.cc | 89 ++
scribo/tests/data.hh.in | 6 +-
scribo/tests/img/alignment_1.png | Bin 0 -> 3145 bytes
scribo/tests/img/alignment_2.png | Bin 0 -> 3147 bytes
scribo/tests/img/alignment_3.png | Bin 0 -> 3145 bytes
scribo/tests/img/alignment_4.png | Bin 0 -> 3155 bytes
scribo/tests/primitive/Makefile.am | 4 +-
scribo/tests/primitive/extract/Makefile.am | 33 +
scribo/tests/primitive/extract/alignment_1.ref.pbm | 5 +
scribo/tests/primitive/extract/alignment_2.ref.pbm | 5 +
scribo/tests/primitive/extract/alignment_3.ref.pbm | 5 +
scribo/tests/primitive/extract/alignment_4.ref.pbm | 5 +
scribo/tests/primitive/extract/alignments.cc | 76 ++
19 files changed, 1788 insertions(+), 2 deletions(-)
create mode 100644 scribo/scribo/primitive/extract/alignments.hh
create mode 100644 scribo/scribo/primitive/link/internal/dmax_hrules.hh
create mode 100644
scribo/scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh
create mode 100644 scribo/scribo/primitive/link/merge_double_link_closest_aligned.hh
create mode 100644 scribo/src/primitive/extract/alignments.cc
create mode 100644 scribo/tests/img/alignment_1.png
create mode 100644 scribo/tests/img/alignment_2.png
create mode 100644 scribo/tests/img/alignment_3.png
create mode 100644 scribo/tests/img/alignment_4.png
create mode 100644 scribo/tests/primitive/extract/Makefile.am
create mode 100644 scribo/tests/primitive/extract/alignment_1.ref.pbm
create mode 100644 scribo/tests/primitive/extract/alignment_2.ref.pbm
create mode 100644 scribo/tests/primitive/extract/alignment_3.ref.pbm
create mode 100644 scribo/tests/primitive/extract/alignment_4.ref.pbm
create mode 100644 scribo/tests/primitive/extract/alignments.cc
diff --git a/scribo/ChangeLog b/scribo/ChangeLog
index 8acfc4e..4592e73 100644
--- a/scribo/ChangeLog
+++ b/scribo/ChangeLog
@@ -1,5 +1,34 @@
2011-04-05 Guillaume Lazzara <z(a)lrde.epita.fr>
+ Add a new alignments extraction routine.
+
+ * scribo/primitive/extract/alignments.hh,
+ * scribo/primitive/link/internal/dmax_hrules.hh,
+ * scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh,
+ * scribo/primitive/link/merge_double_link_closest_aligned.hh: New.
+
+ * src/primitive/extract/alignments.cc: New example.
+
+ * tests/data.hh.in: Add a new macro.
+
+ * tests/img/alignment_1.png,
+ * tests/img/alignment_2.png,
+ * tests/img/alignment_3.png,
+ * tests/img/alignment_4.png,
+ * tests/primitive/extract/alignment_1.ref.pbm,
+ * tests/primitive/extract/alignment_2.ref.pbm,
+ * tests/primitive/extract/alignment_3.ref.pbm,
+ * tests/primitive/extract/alignment_4.ref.pbm: New auxiliary data
+ for tests.
+
+ * src/primitive/extract/Makefile.am,
+ * tests/primitive/Makefile.am,
+ * tests/primitive/extract/Makefile.am: Add new targets.
+
+ * tests/primitive/extract/alignments.cc: New test.
+
+2011-04-05 Guillaume Lazzara <z(a)lrde.epita.fr>
+
Update dmax functors interface.
* scribo/primitive/link/internal/dmax_default.hh,
diff --git a/scribo/scribo/primitive/extract/alignments.hh
b/scribo/scribo/primitive/extract/alignments.hh
new file mode 100644
index 0000000..5314683
--- /dev/null
+++ b/scribo/scribo/primitive/extract/alignments.hh
@@ -0,0 +1,1106 @@
+// 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.
+
+#ifndef SCRIBO_PRIMITIVE_EXTRACT_ALIGNMENTS_HH
+# define SCRIBO_PRIMITIVE_EXTRACT_ALIGNMENTS_HH
+
+#include <iostream>
+
+#include <mln/core/image/image2d.hh>
+#include <mln/core/alias/neighb2d.hh>
+
+#include <mln/data/convert.hh>
+
+#include <mln/value/rgb8.hh>
+#include <mln/value/label_16.hh>
+#include <mln/value/int_u.hh>
+#include <mln/literal/colors.hh>
+
+#include <mln/util/array.hh>
+#include <mln/util/couple.hh>
+
+#include <mln/io/pbm/load.hh>
+#include <mln/io/ppm/save.hh>
+
+#include <mln/labeling/colorize.hh>
+
+#include <mln/util/couple.hh>
+
+#include <scribo/core/def/lbl_type.hh>
+#include <scribo/primitive/extract/components.hh>
+#include <scribo/filter/object_links_aligned.hh>
+#include <scribo/filter/object_groups_small.hh>
+#include <scribo/preprocessing/denoise_fg.hh>
+// #include <scribo/primitive/link/with_single_right_link_dmax_ratio_aligned.hh>
+// #include <scribo/primitive/link/with_single_left_link_dmax_ratio_aligned.hh>
+#include
<scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh>
+#include <scribo/primitive/link/internal/dmax_default.hh>
+#include <scribo/primitive/link/internal/dmax_hrules.hh>
+#include <scribo/primitive/link/merge_double_link_closest_aligned.hh>
+
+#include <scribo/debug/usage.hh>
+#include <scribo/debug/links_image.hh>
+
+
+#include <scribo/core/document.hh>
+#include <scribo/core/component_set.hh>
+#include <scribo/core/line_set.hh>
+#include <scribo/primitive/extract/components.hh>
+#include <scribo/primitive/group/from_single_link.hh>
+#include <scribo/primitive/group/apply.hh>
+#include <scribo/primitive/link/with_single_left_link_dmax_ratio.hh>
+#include <scribo/primitive/link/with_single_right_link_dmax_ratio.hh>
+#include <scribo/primitive/link/merge_double_link.hh>
+#include <scribo/primitive/link/internal/dmax_width_and_height.hh>
+
+#include <scribo/preprocessing/rotate_90.hh>
+#include <scribo/filter/object_links_bbox_h_ratio.hh>
+
+# include <scribo/primitive/extract/separators.hh>
+# include <scribo/primitive/extract/vertical_separators.hh>
+# include <scribo/primitive/extract/horizontal_separators.hh>
+# include <scribo/primitive/extract/separators_nonvisible.hh>
+
+
+namespace scribo
+{
+
+ namespace primitive
+ {
+
+ namespace extract
+ {
+
+ /*! \brief Find page delimitors from tabstops and whitespaces.
+
+ \pre Separators should be removed from input document image .
+
+ \pre Text in \p doc must be constructed from Components
+ grouped by lines with a very strict criterion in order to keep
+ spaces between words and paragraphs. This first grouping is
+ necessary to avoid false positive (e.g. inside the text
+ blocks).
+
+ \pre \p doc must have text (has_text() returns true).
+
+
+ Internal description :
+ ----------------------
+
+ 1) Build an image of line bboxes
+ 2) For TOP and BOTTOM
+ 2.a) Link bboxes. Links are validated only if :
+ - Alignment difference is less than \p delta_pixel.
+ - Bboxes are not too far
+ - No component is located at 5 pixels along the aligned side.
+ 2.b) Invalidates groups if there are less than 3 links
+ 2.c) Invalidates groups if a component is located at a specific
+ distance from the aligned side.
+
+ This method handles skewed alignments and draw skew lines if
+ possible. Examples :
+
+ |x |x
+ | x \x
+ | x -> \x
+ | x \x
+
+
+ \fixme Because the first link step at step 2.a check aligment
+ between only 2 components and not the whole group, we may
+ retrieve alignment patterns such this one :
+
+ |x
+ | x
+ | x
+ | x
+ |x
+
+ Here, the 'x' are aligned pair by pair but globally they are
+ not. Here we cannot draw skewed lines without processing every
+ links and look for that pattern. More over, in step 2.c
+ alignment is validated by looking for other components in the
+ supposed "whitespace area" from the aligned side. With such an
+ alignment there are more chances that a component intersect
+ with that line. Here, we would like to split links/alignement
+ in two groups in order to get something like that :
+
+ \x
+ \x
+ \x
+ /x
+ /x
+
+
+
+ \param[in] doc A document information with text lines.
+
+ \param[in] dmax_ratio The ratio used to compute the maximum
+ lookup distance while linking up components.
+
+ \param[in] delta_pixel The maximum number of pixels allowed
+ for alignment delta precision.
+
+ */
+ template <typename L>
+ mln::util::couple<component_set<L>, mln_ch_value(L,bool)>
+ alignments(const document<L>& doc,
+ float dmax_ratio, unsigned delta_pixel);
+
+
+
+# ifndef MLN_INCLUDE_ONLY
+
+ } // end of namespace scribo::primitive::extract
+
+ } // end of namespace scribo::primitive
+
+
+
+
+ namespace internal
+ {
+
+ template <typename V>
+ point2d
+ point_row_adjust(const point2d& pi, const image2d<V>& ima)
+ {
+ if (ima.domain().has(pi))
+ return pi;
+
+ point2d po = pi;
+
+ if (po.row() < ima.domain().pmin().row())
+ while (!ima.domain().has(po))
+ ++po.row();
+ else
+ while (!ima.domain().has(po))
+ --po.row();
+
+ return po;
+ }
+
+ template <typename V>
+ point2d
+ point_col_adjust(const point2d& pi, const image2d<V>& ima)
+ {
+ if (ima.domain().has(pi))
+ return pi;
+
+ point2d po = pi;
+
+ if (po.col() < ima.domain().pmin().col())
+ while (!ima.domain().has(po))
+ ++po.col();
+ else
+ while (!ima.domain().has(po))
+ --po.col();
+
+ return po;
+ }
+
+ } // end of namespace scribo::internal
+
+
+
+
+ namespace primitive
+ {
+
+ namespace link
+ {
+
+ namespace internal
+ {
+
+ template <typename L, typename F>
+ class single_right_dmax_ratio_aligned_delta_functor
+ : public link_single_dmax_ratio_aligned_delta_base<L, F,
single_right_dmax_ratio_aligned_delta_functor<L,F> >
+ {
+ typedef single_right_dmax_ratio_aligned_delta_functor<L,F> self_t;
+ typedef link_single_dmax_ratio_aligned_delta_base<L, F, self_t> super_;
+
+ public:
+ typedef mln_site(L) P;
+
+ single_right_dmax_ratio_aligned_delta_functor(
+ const component_set<L>& components,
+ const DMax_Functor<F>& dmax_f,
+ unsigned delta,
+ anchor::Direction delta_direction,
+ const L& bbox_ima,
+ unsigned delta_ws_lookup)
+ : super_(components, dmax_f, delta, delta_direction),
+ bbox_ima_(bbox_ima), delta_ws_lookup_(delta_ws_lookup)
+ {
+ debug_ = data::convert(value::rgb8(), data::convert(bool(), bbox_ima));
+ }
+
+ void compute_next_site_(P& p)
+ {
+ ++p.col();
+ }
+
+
+ inline
+ bool
+ valid_link_(unsigned current_object,
+ const P& start_point,
+ const P& p,
+ anchor::Type anchor)
+ {
+ if (!super_::valid_link_(current_object, start_point, p, anchor))
+ return false;
+
+ mln_value(L) nbh = this->labeled_image_(p);
+
+ switch(anchor)
+ {
+ // Top
+ case anchor::StrictTopCenter:
+ {
+ point2d p(std::min(this->components_(current_object).bbox().pmin().row(),
+ this->components_(nbh).bbox().pmin().row()) - delta_ws_lookup_,
+ this->components_(current_object).bbox().pmin().col());
+ p = scribo::internal::point_row_adjust(p, bbox_ima_);
+
+ for (; p.col() <= this->components_(nbh).bbox().pmax().col()
+ && (bbox_ima_(p) == 0);)
+ {
+ debug_(p) = literal::violet;
+ ++p.col();
+ }
+
+ return bbox_ima_(p) == 0;
+ }
+
+ // Bottom
+ case anchor::StrictBottomCenter:
+ {
+ point2d p(std::max(this->components_(current_object).bbox().pmax().row(),
+ this->components_(nbh).bbox().pmax().row()) + delta_ws_lookup_,
+ this->components_(current_object).bbox().pmin().col());
+ p = scribo::internal::point_row_adjust(p, bbox_ima_);
+
+ for (; p.col() <= this->components_(nbh).bbox().pmax().col()
+ && (bbox_ima_(p) == 0);)
+ {
+ debug_(p) = literal::violet;
+ ++p.col();
+ }
+
+ return bbox_ima_(p) == 0;
+ }
+
+ default:
+ trace::warning("anchor not handled!");
+ }
+
+ return false;
+ }
+
+
+ L bbox_ima_;
+ unsigned delta_ws_lookup_;
+
+ image2d<value::rgb8> debug_;
+ };
+
+
+ template <typename L, typename F>
+ class single_left_dmax_ratio_aligned_delta_functor
+ : public link_single_dmax_ratio_aligned_delta_base<L, F,
single_left_dmax_ratio_aligned_delta_functor<L,F> >
+ {
+ typedef single_left_dmax_ratio_aligned_delta_functor<L,F> self_t;
+ typedef link_single_dmax_ratio_aligned_delta_base<L, F, self_t> super_;
+
+ public:
+ typedef mln_site(L) P;
+
+ single_left_dmax_ratio_aligned_delta_functor(
+ const component_set<L>& components,
+ const DMax_Functor<F>& dmax_f,
+ unsigned delta,
+ anchor::Direction delta_direction,
+ const L& bbox_ima,
+ unsigned delta_ws_lookup)
+ : super_(components, dmax_f, delta, delta_direction),
+ bbox_ima_(bbox_ima), delta_ws_lookup_(delta_ws_lookup)
+ {
+ debug_ = data::convert(value::rgb8(), data::convert(bool(), bbox_ima));
+ }
+
+ void compute_next_site_(P& p)
+ {
+ --p.col();
+ }
+
+
+ inline
+ bool
+ valid_link_(unsigned current_object,
+ const P& start_point,
+ const P& p,
+ anchor::Type anchor)
+ {
+ if (!super_::valid_link_(current_object, start_point, p, anchor))
+ return false;
+
+ mln_value(L) nbh = this->labeled_image_(p);
+
+ switch (anchor)
+ {
+
+ // Top
+ case anchor::StrictTopCenter:
+ {
+ point2d p(std::min(this->components_(nbh).bbox().pmin().row(),
+ this->components_(current_object).bbox().pmin().row()) - delta_ws_lookup_,
+ this->components_(current_object).bbox().pmax().col());
+ p = scribo::internal::point_row_adjust(p, bbox_ima_);
+
+ for (; p.col() > this->components_(nbh).bbox().pmin().col()
+ && (bbox_ima_(p) == 0);)
+ {
+ debug_(p) = literal::violet;
+ --p.col();
+ }
+
+ return bbox_ima_(p) == 0;
+ }
+
+ // Bottom
+ case anchor::StrictBottomCenter:
+ {
+ point2d p(std::max(this->components_(nbh).bbox().pmax().row(),
+ this->components_(current_object).bbox().pmax().row()) + delta_ws_lookup_,
+ this->components_(current_object).bbox().pmax().col());
+ p = scribo::internal::point_row_adjust(p, bbox_ima_);
+
+ for (; p.col() > this->components_(nbh).bbox().pmin().col()
+ && (bbox_ima_(p) == 0);)
+ {
+ debug_(p) = literal::violet;
+ --p.col();
+ }
+
+ return bbox_ima_(p) == 0;
+ }
+
+ default:
+ trace::warning("anchor not handled!");
+ }
+
+ return false;
+ }
+
+
+ L bbox_ima_;
+ unsigned delta_ws_lookup_;
+
+ image2d<value::rgb8> debug_;
+ };
+
+
+ } // end of namespace scribo::primitive::link::internal
+
+ } // end of namespace scribo::primitive::link
+
+
+ namespace extract
+ {
+
+ namespace internal
+ {
+
+ template <typename L>
+ bool pass_comp_criterion(const line_info<L>& line)
+ {
+ return line.bbox().height() < 301;// (line.pixel_area() < 10000);
+ }
+
+
+
+ bool
+ is_valid_left_right_skewed_delimitor(const box2d& brot,
+ const image2d<bool> input,
+ unsigned local_delta)
+ {
+ if (brot.pmax().col() - brot.pmin().col() > 6)
+ {
+ point2d
+ p1 = brot.pmin(),
+ p2 = brot.pmax();
+
+ // Handle left to right alignment
+ p1.col() -= local_delta;
+ p2.col() -= local_delta;
+ p_line2d l2d(p1, p2);
+ mln_piter_(p_line2d) p(l2d);
+ for_all(p)
+ if (input(p))
+ return false;
+
+ return true;
+ }
+
+ return false;
+ }
+
+ bool
+ is_valid_right_left_skewed_delimitor(const box2d& brot,
+ const image2d<bool> input,
+ unsigned local_delta)
+ {
+ if (brot.pmax().col() - brot.pmin().col() > 6)
+ {
+ point2d
+ p1 = brot.pmin(),
+ p2 = brot.pmax();
+
+ // Handle right to left alignment
+ p1.col() = brot.pmax().col() - local_delta;
+ p2.col() = brot.pmin().col() - local_delta;
+ p_line2d l2d(p1, p2);
+ mln_piter_(p_line2d) p(l2d);
+ for_all(p)
+ if (input(p))
+ return false;
+
+ return true;
+ }
+
+ return false;
+ }
+
+
+ box2d fast_rotate_positive(const box2d& box, const box2d& rbox)
+ {
+ box2d b(point2d(box.pmin().col(),
+ rbox.ncols() - box.pmin().row() - 1),
+ point2d(box.pmax().col(),
+ rbox.ncols() - box.pmax().row() - 1));
+ return b;
+ }
+
+ box2d fast_rotate_negative(const box2d& box, const box2d& rbox)
+ {
+ // std::cout << point2d(rbox.ncols() - box.pmin().col() - 1,
+ // box.pmin().row())
+ // << " - "
+ // << point2d(rbox.ncols() - box.pmax().col() - 1,
+ // box.pmax().row()) << std::endl;
+
+ // std::cout << box << " - " << rbox << std::endl;
+
+ // box2d b(point2d(rbox.ncols() - box.pmin().col() - 1,
+ // box.pmin().row()),
+ // point2d(rbox.ncols() - box.pmax().col() - 1,
+ // box.pmax().row()));
+
+ mln::def::coord max_row = rbox.ncols() - box.pmin().col() - 1;
+ mln::def::coord min_row = rbox.ncols() - box.pmax().col() - 1;
+// if (min_row > max_row)
+ //std::swap(min_row, max_row);
+
+ box2d b(point2d(min_row,
+ box.pmin().row()),
+ point2d(max_row,
+ box.pmax().row()));
+
+ return b;
+ }
+
+ } // end of namespace scribo::primitive::extract
+
+
+ /////////////
+ // FACADES //
+ /////////////
+
+
+ template <typename L>
+ mln::util::couple<component_set<L>, mln_ch_value(L,bool)>
+ alignments(const document<L>& doc,
+ float dmax_ratio, unsigned delta_pixel)
+ {
+ trace::entering("scribo::primitive::extract::alignments");
+ mln_precondition(doc.is_valid());
+ mln_precondition(doc.has_text());
+ const mln_ch_value(L,bool)& input = doc.binary_image();
+
+ unsigned min_card = 3;
+ unsigned delta = 5;
+
+ // 0. Get low level structures in document data.
+ typedef mln_value(L) V;
+ const object_groups<L>& groups = doc.paragraphs().lines().groups();
+ const line_set<L>& lines = doc.lines();
+
+
+ // 1. Construct an image of group bounding boxes.
+ //
+ // This image is used later to group bounding boxes. It is
+ // rotated in order to make grouping faster (linear memory
+ // reading).
+ //
+ box2d rbbox = box2d(input.domain().pmin(),
+ point2d(input.domain().pmax().col(),
+ input.domain().pmax().row()));
+
+ L bbox_ima(rbbox);
+ data::fill(bbox_ima, 0);
+ for_all_lines(l, lines)
+ if (lines(l).is_valid()
+ && internal::pass_comp_criterion(lines(l)))
+ mln::draw::box(bbox_ima,
+ internal::fast_rotate_positive(lines(l).bbox(),
+ rbbox),
+ lines(l).id().value());
+
+
+ // Compute component information
+ //
+ // FIXME: not useful since we have all required information
+ // in the line_set. However a component_set is needed in link
+ // functors...
+ component_set<L>
+ components = component_set<L>(bbox_ima, lines.nelements());
+
+
+ // Dmax functor used for TOP and BOTTOM links.
+ primitive::link::internal::dmax_hrules dmax_func(dmax_ratio, 100);
+
+
+ // Output image
+ image2d<bool> delimitors;
+ initialize(delimitors, input);
+ data::fill(delimitors, false);
+
+# ifndef SCRIBO_NDEBUG
+ image2d<value::rgb8> debug;
+ initialize(debug, components.labeled_image());
+ data::fill(debug, literal::black);
+ scribo::draw::bounding_boxes(debug, components, literal::blue);
+# endif // ! SCRIBO_NDEBUG
+
+
+
+
+ // 2.1. BEGIN OF TOP LINKS PROCESSING
+ {
+ object_links<L> top_links;
+
+ object_groups<L>
+ top_groups,
+ old_top_groups;
+
+ util::array<unsigned> top_group_size;
+
+ typedef mln::accu::stat::median_h<value::int_u<12u> > median_t;
+ mln::util::array<median_t>
+ top_median_char_width,
+ top_median_char_space;
+
+ mln::util::array<unsigned> top_max_char_width;
+
+
+
+ // 2.1.1. Find TOP links.
+ {
+ object_links<L> right, left;
+
+ // link right
+ {
+ primitive::link::internal::single_right_dmax_ratio_aligned_delta_functor<
+ L,primitive::link::internal::dmax_hrules>
+ functor(components, dmax_func, delta_pixel, anchor::Vertical, bbox_ima, delta);
+
+ right = primitive::link::compute(functor, anchor::StrictTopCenter);
+ }
+
+ // Link left
+ {
+ primitive::link::internal::single_left_dmax_ratio_aligned_delta_functor<
+ L,primitive::link::internal::dmax_hrules>
+ functor(components, dmax_func, delta_pixel, anchor::Vertical, bbox_ima, delta);
+
+ left = primitive::link::compute(functor, anchor::StrictTopCenter);
+ }
+
+ // Merge links
+ top_links = primitive::link::merge_double_link_closest_aligned(left, right,
+ anchor::StrictTopCenter);
+
+ // Remove groups with not enough links.
+ old_top_groups = primitive::group::from_single_link(top_links);
+ top_groups = filter::object_groups_small(old_top_groups, min_card,
+ top_group_size);
+
+
+ // Compute char_width and char_space statistics.
+ //
+ // Here, we also compute max_char_width, in case other
+ // statistics are not significant enough for next steps.
+ //
+ // To avoid biased statistics, char_space and char_width are
+ // used from lines with at least 2 components.
+ //
+ top_median_char_space.resize(top_groups.nelements());
+ top_median_char_width.resize(top_groups.nelements());
+ top_max_char_width.resize(top_groups.nelements());
+
+ for_all_groups(g, top_groups)
+ if (top_groups.is_valid(g))
+ {
+ if (lines(g).card() > 1)
+ {
+ top_median_char_space(top_groups(g)).take(lines(g).char_space());
+ top_median_char_width(top_groups(g)).take(lines(g).char_width());
+ }
+ else if (top_max_char_width(top_groups(g)) < lines(g).char_width())
+ top_max_char_width(top_groups(g)) = lines(g).char_width();
+ }
+
+ }
+
+
+ // 2.1.2. Check TOP whitespaces
+ {
+ util::array<accu::shape::bbox<point2d> >
+ group_bbox(top_groups.nelements());
+
+ // Compute group bboxes
+ for_all_links(l, top_links)
+ if (top_links.is_valid(l))
+ {
+ point2d p = components(top_links(l)).bbox().pmax();
+ p.row() = components(top_links(l)).bbox().pmin().row();
+
+ if (top_groups.is_valid(l)
+ && top_group_size(old_top_groups(l)) > 2)
+ {
+ group_bbox(top_groups(l)).take(p);
+ group_bbox(top_groups(l)).take(components(l).bbox().pmin());
+
+# ifndef SCRIBO_NDEBUG
+ // Draw first component bbox.
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(l).component_ids()[0]).bbox(),
+ rbbox),
+ literal::cyan);
+
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(top_links(l)).component_ids()[0]).bbox(),
+ rbbox),
+ literal::cyan);
+# endif // ! SCRIBO_NDEBUG
+ }
+
+# ifndef SCRIBO_NDEBUG
+ else if (top_group_size(old_top_groups(l)) > 1)
+ {
+ mln::draw::line(debug,
+ components(l).bbox().pmin(),
+ p,
+ literal::orange);
+
+ // Draw first component bbox.
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(l).component_ids()[0]).bbox(),
+ rbbox),
+ literal::cyan);
+
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(top_links(l)).component_ids()[0]).bbox(),
+ rbbox),
+ literal::cyan);
+
+ }
+# endif // ! SCRIBO_NDEBUG
+ }
+
+
+ // Looking for whitespaces (if needed)
+ for_all_elements(c, group_bbox)
+ if (group_bbox(c).to_result().is_valid())
+ {
+ unsigned ldelta = delta;
+ // Handle low connection groups.
+ if (top_group_size(c) >= 3 && top_group_size(c) < 5)
+ {
+ // Stats are not reliable, prefer using max char width.
+ if (top_median_char_width(c).card() == 0)
+ ldelta = top_max_char_width(c) * 2;
+ else
+ ldelta = 1.2 * top_median_char_width(c) + top_median_char_space(c);
+
+ point2d p(group_bbox(c).to_result().pmin().row() - ldelta,
+ group_bbox(c).to_result().pmin().col());
+ p = scribo::internal::point_row_adjust(p, bbox_ima);
+
+ // Checking whitespace area
+ for (; p.col() <= group_bbox(c).to_result().pmax().col()
+ && (bbox_ima(p) == 0);)
+ ++p.col();
+
+ if (bbox_ima(p) != 0)
+ {
+# ifndef SCRIBO_NDEBUG
+ mln::draw::line(debug,
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmin().row() - ldelta,
+ group_bbox(c).to_result().pmin().col()), debug),
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmin().row() - ldelta,
+ group_bbox(c).to_result().pmax().col()), debug),
+ literal::red);
+# endif // ! SCRIBO_NDEBUG
+
+ continue;
+ }
+ }
+
+
+ box2d
+ brot = internal::fast_rotate_negative(group_bbox(c).to_result(),
+ rbbox);
+
+ // Checking if the delimitor is skewed.
+ if (internal::is_valid_left_right_skewed_delimitor(brot, input,
+ delta))
+ {
+ mln::draw::line(delimitors,
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmin().row(),
+ brot.pmin().col() - delta), delimitors),
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmax().row(),
+ brot.pmax().col() - delta), delimitors),
+ true);
+ }
+ else if (internal::is_valid_right_left_skewed_delimitor(brot, input,
+ delta))
+ {
+ mln::draw::line(delimitors,
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmin().row(),
+ brot.pmax().col() - delta), delimitors),
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmax().row(),
+ brot.pmin().col() - delta), delimitors),
+ true);
+ }
+ else
+ {
+ mln::draw::line(delimitors,
+ scribo::internal::point_col_adjust(point2d(brot.pmin().row(),
+ brot.pmin().col() - delta), delimitors),
+ scribo::internal::point_col_adjust(point2d(brot.pmax().row(),
+ brot.pmin().col() - delta), delimitors),
+ true);
+ }
+
+# ifndef SCRIBO_NDEBUG
+ mln::draw::line(debug,
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmin().row() - ldelta,
+ group_bbox(c).to_result().pmin().col()), debug),
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmin().row() - ldelta,
+ group_bbox(c).to_result().pmax().col()), debug),
+ literal::green);
+# endif // ! SCRIBO_NDEBUG
+
+ }
+ }
+
+ } // END OF TOP LINKS PROCESSING
+
+
+
+ // 2.2. BEGIN OF BOTTOM LINKS PROCESSING
+ {
+ object_links<L> bot_links;
+
+ object_groups<L>
+ bot_groups,
+ old_bot_groups;
+
+ util::array<unsigned> bot_group_size;
+
+ typedef mln::accu::stat::median_h<value::int_u<12u> > median_t;
+ mln::util::array<median_t>
+ bot_median_char_width,
+ bot_median_char_space;
+
+ mln::util::array<unsigned> bot_max_char_width;
+
+ // 2.2.1. Find BOTTOM links.
+ {
+ object_links<L> right, left;
+
+ // link right
+ {
+ primitive::link::internal::single_right_dmax_ratio_aligned_delta_functor<
+ L,primitive::link::internal::dmax_hrules>
+ functor(components, dmax_func, delta_pixel, anchor::Vertical,
+ bbox_ima, delta);
+
+ right = primitive::link::compute(functor, anchor::StrictBottomCenter);
+ }
+
+ // Link left
+ {
+ primitive::link::internal::single_left_dmax_ratio_aligned_delta_functor<
+ L,primitive::link::internal::dmax_hrules>
+ functor(components, dmax_func, delta_pixel, anchor::Vertical,
+ bbox_ima, delta);
+
+ left = primitive::link::compute(functor, anchor::StrictBottomCenter);
+ }
+
+ // Merge links
+ bot_links = primitive::link::merge_double_link_closest_aligned(left, right,
+ anchor::StrictBottomCenter);
+
+ // Remove groups with not enough links.
+ old_bot_groups = primitive::group::from_single_link(bot_links);
+ bot_groups = filter::object_groups_small(old_bot_groups, min_card,
+ bot_group_size);
+
+ bot_median_char_space.resize(bot_groups.nelements());
+ bot_median_char_width.resize(bot_groups.nelements());
+ bot_max_char_width.resize(bot_groups.nelements());
+
+ for_all_groups(g, bot_groups)
+ if (bot_groups.is_valid(g))
+ {
+ if (lines(g).card() > 1)
+ {
+ bot_median_char_space(bot_groups(g)).take(lines(g).char_space());
+ bot_median_char_width(bot_groups(g)).take(lines(g).char_width());
+ }
+ // This data will be used if alignments are made with single
+ // components only.
+ else if (bot_max_char_width(bot_groups(g)) < lines(g).char_width())
+ bot_max_char_width(bot_groups(g)) = lines(g).char_width();
+ }
+ }
+
+
+ // 2.2.2. Check BOTTOM whitespaces
+ {
+ util::array<accu::shape::bbox<point2d> >
+ group_bbox(bot_groups.nelements());
+
+ // Compute group bboxes
+ for_all_links(l, bot_links)
+ if (bot_links.is_valid(l))
+ {
+ point2d p = components(l).bbox().pmin();
+ p.row() = components(l).bbox().pmax().row();
+
+ if (bot_groups.is_valid(l)
+ && bot_group_size(old_bot_groups(l)) > 2)
+ {
+ group_bbox(bot_groups(l)).take(p);
+ group_bbox(bot_groups(l)).take(
+ components(bot_links(l)).bbox().pmax());
+
+# ifndef SCRIBO_NDEBUG
+ // Draw first component box
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(l).component_ids()[lines(l).card() - 1]).bbox(),
+ rbbox),
+ literal::cyan);
+
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(bot_links(l)).component_ids()[lines(bot_links(l)).card()
- 1]).bbox(),
+ rbbox),
+ literal::cyan);
+# endif // ! SCRIBO_NDEBUG
+ }
+
+# ifndef SCRIBO_NDEBUG
+ else if (bot_group_size(old_bot_groups(l)) > 1)
+ {
+ mln::draw::line(debug,
+ p,
+ components(bot_links(l)).bbox().pmax(),
+ literal::orange);
+
+ // Draw first component box
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(l).component_ids()[lines(l).card() - 1]).bbox(),
+ rbbox),
+ literal::cyan);
+
+ mln::draw::box(debug,
+ internal::fast_rotate_positive(
+ groups.components()(lines(bot_links(l)).component_ids()[lines(bot_links(l)).card()
- 1]).bbox(),
+ rbbox),
+ literal::cyan);
+ }
+# endif // ! SCRIBO_NDEBUG
+ }
+
+
+ // Looking for whitespaces
+ for_all_elements(c, group_bbox)
+ if (group_bbox(c).is_valid())
+ {
+ unsigned ldelta = delta;
+ if (bot_group_size(c) >= 3 && bot_group_size(c) < 5)
+ {
+ // Stats are not reliable, prefer using max char width.
+ if (bot_median_char_width(c).card() == 0)
+ ldelta = bot_max_char_width(c) * 2;
+ else
+ ldelta = 1.2 * bot_median_char_width(c)
+ + bot_median_char_space(c);
+
+ point2d p(group_bbox(c).to_result().pmax().row() + ldelta,
+ group_bbox(c).to_result().pmin().col());
+ p = scribo::internal::point_row_adjust(p, bbox_ima);
+
+ // Checking whitespace area
+ for (; p.col() <= group_bbox(c).to_result().pmax().col()
+ && (bbox_ima(p) == 0);)
+ ++p.col();
+
+ if (bbox_ima(p) != 0)
+ {
+# ifndef SCRIBO_NDEBUG
+ mln::draw::line(debug,
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmax().row() + ldelta,
+ group_bbox(c).to_result().pmin().col()), debug),
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmax().row() + ldelta,
+ group_bbox(c).to_result().pmax().col()), debug),
+ literal::red);
+# endif // ! SCRIBO_NDEBUG
+
+ continue;
+ }
+ }
+
+ box2d
+ brot = internal::fast_rotate_negative(group_bbox(c).to_result(),
+ rbbox);
+
+ if (internal::is_valid_left_right_skewed_delimitor(brot, input,
+ - delta))
+ {
+ mln::draw::line(delimitors,
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmin().row(),
+ brot.pmin().col() + delta),
+ delimitors),
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmax().row(),
+ brot.pmax().col() + delta),
+ delimitors),
+ true);
+ }
+ else if (internal::is_valid_right_left_skewed_delimitor(brot,
+ input,
+ - delta))
+ {
+ mln::draw::line(delimitors,
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmin().row(),
+ brot.pmax().col() + delta),
+ delimitors),
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmax().row(),
+ brot.pmin().col() + delta),
+ delimitors),
+ true);
+ }
+ else
+ {
+ mln::draw::line(delimitors,
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmin().row(),
+ brot.pmax().col() + delta),
+ delimitors),
+ scribo::internal::point_col_adjust(
+ point2d(brot.pmax().row(),
+ brot.pmax().col() + delta),
+ delimitors),
+ true);
+ }
+
+# ifndef SCRIBO_NDEBUG
+ mln::draw::line(debug,
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmax().row() + ldelta,
+ group_bbox(c).to_result().pmin().col()), debug),
+ scribo::internal::point_row_adjust(
+ point2d(group_bbox(c).to_result().pmax().row() + ldelta,
+ group_bbox(c).to_result().pmax().col()), debug),
+ literal::green);
+# endif // ! SCRIBO_NDEBUG
+ }
+ }
+
+ } // END OF BOTTOM LINKS PROCESSING
+
+
+ V ndelim;
+ component_set<L>
+ delim_comps = primitive::extract::components(delimitors, c8(), ndelim);
+
+ mln::util::couple<component_set<L>, mln_ch_value(L,bool)>
+ output(delim_comps, delimitors);
+
+# ifndef SCRIBO_NDEBUG
+ debug = preprocessing::rotate_90(debug, true);
+ debug::logger().log_image(debug::All,
+ debug, "alignments_debug");
+# endif // ! SCRIBO_NDEBUG
+
+ trace::exiting("scribo::primitive::extract::alignments");
+ return output;
+ }
+
+# endif // ! MLN_INCLUDE_ONLY
+
+ } // end of namespace scribo::primitive::extract
+
+ } // end of namespace scribo::primitive
+
+} // end of namespace scribo
+
+#endif // ! SCRIBO_PRIMITIVE_EXTRACT_ALIGNMENTS_HH
diff --git a/scribo/scribo/primitive/link/internal/dmax_hrules.hh
b/scribo/scribo/primitive/link/internal/dmax_hrules.hh
new file mode 100644
index 0000000..24de6ca
--- /dev/null
+++ b/scribo/scribo/primitive/link/internal/dmax_hrules.hh
@@ -0,0 +1,100 @@
+// 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.
+
+#ifndef SCRIBO_PRIMITIVE_LINK_INTERNAL_DMAX_HRULES_HH
+# define SCRIBO_PRIMITIVE_LINK_INTERNAL_DMAX_HRULES_HH
+
+/// \file
+///
+/// Default class for dmax functors.
+
+# include <scribo/primitive/link/internal/dmax_functor_base.hh>
+
+
+namespace scribo
+{
+
+ namespace primitive
+ {
+
+ namespace link
+ {
+
+ namespace internal
+ {
+
+
+ /// \brief Base class for dmax functors.
+ class dmax_hrules : public dmax_functor_base<dmax_hrules>
+ {
+ typedef dmax_functor_base<dmax_hrules> super_;
+
+ public:
+ dmax_hrules(float dmax_factor, unsigned fixed_dmax);
+ float compute_(const box2d& b) const;
+
+ protected:
+ using super_::dmax_factor_;
+ unsigned fixed_dmax_;
+ };
+
+
+# ifndef MLN_INCLUDE_ONLY
+
+
+ inline
+ dmax_hrules::dmax_hrules(float dmax_factor, unsigned fixed_dmax)
+ : super_(dmax_factor), fixed_dmax_(fixed_dmax)
+ {
+ }
+
+
+ inline
+ float
+ dmax_hrules::compute_(const box2d& b) const
+ {
+ float
+ w = b.width();
+
+ if (w < 15)
+ return fixed_dmax_;
+
+ return (w / 2.0f) + (dmax_factor_ * w);
+ }
+
+
+# endif // ! MLN_INCLUDE_ONLY
+
+
+ } // end of namespace scribo::primitive::link::internal
+
+ } // end of namespace scribo::primitive::link
+
+ } // end of namespace scribo::primitive
+
+} // end of namespace scribo
+
+
+#endif // ! SCRIBO_PRIMITIVE_LINK_INTERNAL_DMAX_HRULES_HH
diff --git
a/scribo/scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh
b/scribo/scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh
new file mode 100644
index 0000000..c7ef021
--- /dev/null
+++ b/scribo/scribo/primitive/link/internal/link_single_dmax_ratio_aligned_delta_base.hh
@@ -0,0 +1,159 @@
+// 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.
+
+#ifndef SCRIBO_PRIMITIVE_LINK_INTERNAL_LINK_SINGLE_DMAX_RATIO_ALIGNED_DELTA_BASE_HH_
+# define SCRIBO_PRIMITIVE_LINK_INTERNAL_LINK_SINGLE_DMAX_RATIO_ALIGNED_DELTA_BASE_HH_
+
+/// \file
+///
+/// \brief Base class for link functors using bounding box center,
+/// a proportional max distance and alignment criterion.
+
+
+# include <mln/accu/center.hh>
+# include <mln/labeling/compute.hh>
+# include <mln/math/abs.hh>
+# include <mln/math/max.hh>
+# include <mln/util/array.hh>
+# include <mln/value/rgb8.hh>
+# include <mln/draw/line.hh>
+# include <mln/literal/colors.hh>
+# include <mln/norm/l1.hh>
+
+# include <scribo/core/macros.hh>
+# include <scribo/core/tag/anchor.hh>
+# include <scribo/core/component_set.hh>
+# include <scribo/core/object_links.hh>
+# include <scribo/core/concept/dmax_functor.hh>
+
+# include <scribo/debug/logger.hh>
+
+# include <scribo/primitive/link/internal/link_single_dmax_ratio_base.hh>
+# include <scribo/filter/internal/component_aligned.hh>
+
+
+namespace scribo
+{
+
+ namespace primitive
+ {
+
+ namespace link
+ {
+
+ namespace internal
+ {
+ using namespace scribo::debug;
+
+
+ template <typename L, typename F, typename E>
+ class link_single_dmax_ratio_aligned_delta_base
+ : public link_single_dmax_ratio_base<L, F, E>
+ {
+ typedef link_single_dmax_ratio_base<L, F, E> super_;
+
+ public:
+ typedef mln_site(L) P;
+
+ link_single_dmax_ratio_aligned_delta_base(
+ const component_set<L>& components,
+ const DMax_Functor<F>& dmax_f,
+ int delta_pixel,
+ anchor::Direction delta_direction)
+ : super_(components, anchor::Horizontal, exact(dmax_f)),
+ delta_pixel_(delta_pixel), delta_direction_(delta_direction)
+ {
+
+ }
+
+
+ mln_site(L)
+ start_point_(unsigned current_object, anchor::Type anchor)
+ {
+ return link::internal::compute_anchor(this->components_,
+ current_object, anchor);
+ }
+
+
+ inline
+ bool
+ valid_link_(unsigned current_object,
+ const P& start_point,
+ const P& p,
+ anchor::Type anchor)
+ {
+ if (!super_::valid_link_(current_object, start_point, p, anchor))
+ return false;
+
+ // We can assume that the current site 'p' points to an
+ // object different from the background.
+
+ mln_site(L)
+ p1 = compute_anchor(this->components_, current_object, anchor),
+ p2 = compute_anchor(this->components_, this->labeled_image_(p),
+ anchor);
+
+ return std::abs(p1[this->delta_direction_]
+ - p2[this->delta_direction_]) <= delta_pixel_;
+ }
+
+
+ void validate_link_(unsigned current_object,
+ const P& start_point,
+ const P& p,
+ anchor::Type anchor)
+ {
+ super_::validate_link_(current_object, start_point, p, anchor);
+ }
+
+ void invalidate_link_(unsigned current_object,
+ const P& start_point,
+ const P& p,
+ anchor::Type anchor)
+ {
+ super_::invalidate_link_(current_object, start_point, p, anchor);
+ }
+
+ int delta_pixel_;
+ anchor::Direction delta_direction_;
+ };
+
+
+# ifndef MLN_INCLUDE_ONLY
+
+
+# endif // ! MLN_INCLUDE_ONLY
+
+
+ } // end of namespace scribo::primitive::link::internal
+
+ } // end of namespace scribo::primitive::link
+
+ } // end of namespace scribo::primitive
+
+} // end of namespace scribo
+
+
+#endif // SCRIBO_PRIMITIVE_LINK_INTERNAL_LINK_SINGLE_DMAX_RATIO_ALIGNED_DELTA_BASE_HH_
diff --git a/scribo/scribo/primitive/link/merge_double_link_closest_aligned.hh
b/scribo/scribo/primitive/link/merge_double_link_closest_aligned.hh
new file mode 100644
index 0000000..6c6e67f
--- /dev/null
+++ b/scribo/scribo/primitive/link/merge_double_link_closest_aligned.hh
@@ -0,0 +1,157 @@
+// 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 Merge two object links data based on distance and angle.
+
+#ifndef SCRIBO_PRIMITIVE_LINK_MERGE_DOUBLE_LINK_CLOSEST_ALIGNED_HH
+# define SCRIBO_PRIMITIVE_LINK_MERGE_DOUBLE_LINK_CLOSEST_ALIGNED_HH
+
+
+# include <scribo/core/macros.hh>
+# include <scribo/core/object_links.hh>
+# include <scribo/core/tag/anchor.hh>
+# include <scribo/filter/internal/alignment_angle.hh>
+
+namespace scribo
+{
+
+ namespace primitive
+ {
+
+ namespace link
+ {
+
+ /*! \brief Merge two object links data based on distance and angle.
+
+ Performs an 'OR' operation on the links according distance and
+ angle criterion.
+
+ If a component has several incoming links, only the link for
+ which the the object is the closest or the angle performed
+ between the two bboxes is the lower, will be preserved.
+ */
+ template <typename L>
+ object_links<L>
+ merge_double_link_closest_aligned(const object_links<L>& left,
+ const object_links<L>& right,
+ anchor::Type anchor_angle);
+
+# ifndef MLN_INCLUDE_ONLY
+
+ template <typename L>
+ object_links<L>
+ merge_double_link_closest_aligned(const object_links<L>& left,
+ const object_links<L>& right,
+ anchor::Type anchor_angle)
+ {
+ trace::entering("scribo::primitive::link::merge_double_link_closest_aligned");
+ mln_precondition(left.is_valid());
+ mln_precondition(right.is_valid());
+
+
+ const component_set<L>& components = left.components();
+
+ mln::util::array<mln::util::couple<unsigned, float> > align_data;
+ align_data.resize(value::next(left.nelements()));
+ for (unsigned i = 0; i < align_data.nelements(); ++i)
+ {
+ align_data(i).first() = mln_max(unsigned);
+ align_data(i).second() = 360;
+ }
+
+ object_links<L> output = right.duplicate();
+
+ // Init alignment data.
+ for_all_links(l, output)
+ if (right(l) != l)
+ {
+ //FIXME Handle the case when a component is included in another one ?
+
+ // Update distance
+ align_data(l).first()
+ = std::abs(components(l).bbox().pcenter().col()
+ - components(right(l)).bbox().pcenter().col());
+
+ // Update angle
+ align_data(l).second()
+ = filter::internal::alignment_angle(components,
+ l,
+ right(l),
+ anchor_angle);
+ }
+ else
+ {
+ // Update distance
+ align_data(l).first() = mln_max(unsigned);
+
+ // Update angle
+ align_data(l).second() = 360.f;
+ }
+
+
+
+ // Trying to improve results with left links.
+ for_all_links(l, left)
+ if (left(l) != l && left(l) != right(l))
+ {
+ unsigned dh = std::abs(components(l).bbox().pcenter().col()
+ - components(left(l)).bbox().pcenter().col());
+
+ float alpha
+ = filter::internal::alignment_angle(components,
+ l,
+ left(l),
+ anchor_angle);
+
+ if (right(left(l)) == left(l))
+ {
+ output(left(l)) = l;
+ //output.update_link(left(l), l);
+ }
+ else if ((dh < align_data(left(l)).first() * 0.66f)
+ || (alpha < align_data(left(l)).second()))
+ {
+ output(left(l)) = l;
+ //output.update_link(left(l), l);
+ align_data(left(l)).first() = dh;
+ align_data(left(l)).second() = alpha;
+ }
+ }
+
+ trace::exiting("scribo::primitive::link::merge_double_link_closest_aligned");
+ return output;
+ }
+
+# endif // ! MLN_INCLUDE_ONLY
+
+ } // end of namespace scribo::primitive::link
+
+ } // end of namespace scribo::primitive
+
+} // end of namespace scribo
+
+#endif // ! SCRIBO_PRIMITIVE_LINK_MERGE_DOUBLE_LINK_CLOSEST_ALIGNED_HH
diff --git a/scribo/src/primitive/extract/Makefile.am
b/scribo/src/primitive/extract/Makefile.am
index 22d6bfd..fef405a 100644
--- a/scribo/src/primitive/extract/Makefile.am
+++ b/scribo/src/primitive/extract/Makefile.am
@@ -34,3 +34,14 @@ separators_nonvisible_SOURCES = separators_nonvisible.cc
thick_vlines_SOURCES = thick_vlines.cc
thick_hlines_SOURCES = thick_hlines.cc
lines_pattern_SOURCES = lines_pattern.cc
+
+
+if HAVE_MAGICKXX
+
+ noinst_PROGRAMS += alignments
+ alignments_SOURCES = alignments.cc
+ alignments_CPPFLAGS = $(AM_CPPFLAGS) \
+ $(MAGICKXX_CPPFLAGS)
+ alignments_LDFLAGS = $(AM_LDFLAGS) \
+ $(MAGICKXX_LDFLAGS)
+endif HAVE_MAGICKXX
\ No newline at end of file
diff --git a/scribo/src/primitive/extract/alignments.cc
b/scribo/src/primitive/extract/alignments.cc
new file mode 100644
index 0000000..2508ec9
--- /dev/null
+++ b/scribo/src/primitive/extract/alignments.cc
@@ -0,0 +1,89 @@
+// 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.
+
+#include <mln/core/image/image2d.hh>
+#include <mln/io/pbm/all.hh>
+#include <mln/data/convert.hh>
+#include <mln/util/timer.hh>
+
+#include <scribo/text/extract_lines_wo_merge.hh>
+#include <scribo/primitive/extract/alignments.hh>
+#include <scribo/debug/usage.hh>
+
+const char *args_desc[][2] =
+{
+ { "input.pbm", "A binary image without vertical or horizontal
separators." },
+ { "output.pbm", "Output image." },
+ { "enable_debug", "0 or 1 (default 0)" },
+ {0, 0}
+};
+
+
+int main(int argc, char *argv[])
+{
+ using namespace mln;
+ using namespace scribo;
+
+ if (argc != 3 && argc != 4)
+ return scribo::debug::usage(argv,
+ "Extract delimitors based on alignments.",
+ "input.pbm output.pbm [enable_debug]",
+ args_desc);
+
+ trace::entering("main");
+
+ if (argc > 3 && atoi(argv[3]))
+ scribo::debug::logger().set_level(scribo::debug::All);
+
+ float dmax_ratio = 3;
+ unsigned delta_pixel = 3;
+
+ typedef image2d<scribo::def::lbl_type> L;
+ document<L> doc(argv[1]);
+ doc.open();
+
+ // Vertical and horizontal separators
+ image2d<bool> input = data::convert(bool(), doc.image());
+ image2d<bool> separators = primitive::extract::separators(input, 81);
+ input = primitive::remove::separators(input, separators);
+ input = preprocessing::denoise_fg(input, c8(), 3);
+ doc.set_binary_image(input);
+
+ // Extract lines
+ line_set<L>
+ lines = scribo::text::extract_lines_wo_merge(doc, c8(), separators);
+ doc.set_paragraphs(scribo::make::paragraph(lines));
+
+ util::timer t;
+ t.start();
+ mln::util::couple<component_set<L>, mln_ch_value_(L,bool)>
+ res = primitive::extract::alignments(doc, dmax_ratio, delta_pixel);
+ t.stop();
+ std::cout << t << std::endl;
+
+ io::pbm::save(res.second(), argv[2]);
+
+ trace::exiting("main");
+}
diff --git a/scribo/tests/data.hh.in b/scribo/tests/data.hh.in
index 6a6f95f..501fbea 100644
--- a/scribo/tests/data.hh.in
+++ b/scribo/tests/data.hh.in
@@ -1,4 +1,5 @@
-// Copyright (C) 2008 EPITA Research and Development Laboratory (LRDE)
+// Copyright (C) 2008, 2011 EPITA Research and Development Laboratory
+// (LRDE)
//
// This file is part of the Olena Library. This library is free
// software; you can redistribute it and/or modify it under the terms
@@ -36,4 +37,7 @@
/// \brief The absolute path to the img directory of Scribo.
# define SCRIBO_IMG_DIR "@abs_top_srcdir@/scribo/tests/img"
+/// \brief The absolute path to the test directory of Scribo.
+# define SCRIBO_TESTS_DIR "@abs_top_srcdir@/scribo/tests/"
+
#endif // ! SCRIBO_TESTS_DATA_HH
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literal 0
HcmV?d00001
diff --git a/scribo/tests/primitive/Makefile.am b/scribo/tests/primitive/Makefile.am
index 82c773a..2b88bed 100644
--- a/scribo/tests/primitive/Makefile.am
+++ b/scribo/tests/primitive/Makefile.am
@@ -1,4 +1,5 @@
-# Copyright (C) 2010 EPITA Research and Development Laboratory (LRDE).
+# Copyright (C) 2010, 2011 EPITA Research and Development Laboratory
+# (LRDE).
#
# This file is part of Olena.
#
@@ -17,5 +18,6 @@
include $(top_srcdir)/scribo/tests/tests.mk
SUBDIRS = \
+ extract \
link
diff --git a/scribo/tests/primitive/extract/Makefile.am
b/scribo/tests/primitive/extract/Makefile.am
new file mode 100644
index 0000000..97eb43f
--- /dev/null
+++ b/scribo/tests/primitive/extract/Makefile.am
@@ -0,0 +1,33 @@
+# 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/>.
+
+include $(top_srcdir)/scribo/tests/tests.mk
+
+check_PROGRAMS =
+
+if HAVE_MAGICKXX
+
+check_PROGRAMS = alignments
+alignments_SOURCES = alignments.cc
+alignments_CPPFLAGS = $(AM_CPPFLAGS) \
+ $(MAGICKXX_CPPFLAGS) \
+ -DSCRIBO_NDEBUG
+alignments_LDFLAGS = $(LDFLAGS) \
+ $(MAGICKXX_LDFLAGS)
+
+endif HAVE_MAGICKXX
+
+TESTS = $(check_PROGRAMS)
diff --git a/scribo/tests/primitive/extract/alignment_1.ref.pbm
b/scribo/tests/primitive/extract/alignment_1.ref.pbm
new file mode 100644
index 0000000..ad657f2
--- /dev/null
+++ b/scribo/tests/primitive/extract/alignment_1.ref.pbm
@@ -0,0 +1,5 @@
+P4
+# Generated by Milena 1.0
http://olena.lrde.epita.fr
+# EPITA Research and Development Laboratory (LRDE)
+436 216
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b/scribo/tests/primitive/extract/alignment_2.ref.pbm
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@@ -0,0 +1,5 @@
+P4
+# Generated by Milena 1.0
http://olena.lrde.epita.fr
+# EPITA Research and Development Laboratory (LRDE)
+436 216
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b/scribo/tests/primitive/extract/alignment_3.ref.pbm
new file mode 100644
index 0000000..0bd1d34
--- /dev/null
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@@ -0,0 +1,5 @@
+P4
+# Generated by Milena 1.0
http://olena.lrde.epita.fr
+# EPITA Research and Development Laboratory (LRDE)
+436 216
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b/scribo/tests/primitive/extract/alignment_4.ref.pbm
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+P4
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http://olena.lrde.epita.fr
+# EPITA Research and Development Laboratory (LRDE)
+436 216
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\ No newline at end of file
diff --git a/scribo/tests/primitive/extract/alignments.cc
b/scribo/tests/primitive/extract/alignments.cc
new file mode 100644
index 0000000..7bd82fb
--- /dev/null
+++ b/scribo/tests/primitive/extract/alignments.cc
@@ -0,0 +1,76 @@
+// 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
+
+#include <mln/core/image/image2d.hh>
+#include <mln/core/alias/neighb2d.hh>
+#include <mln/io/pbm/load.hh>
+
+#include <scribo/core/document.hh>
+#include <scribo/core/paragraph_set.hh>
+#include <scribo/text/extract_lines_wo_merge.hh>
+#include <scribo/primitive/extract/alignments.hh>
+
+#include "tests/data.hh"
+
+
+int main()
+{
+ using namespace mln;
+ using namespace scribo;
+
+ typedef image2d<scribo::def::lbl_type> L;
+
+ for (unsigned i = 1; i < 5; ++i)
+ {
+ std::ostringstream os;
+ os << SCRIBO_IMG_DIR << "/alignment_" << i <<
".png";
+
+ document<L> doc(os.str().c_str());
+ doc.open();
+ doc.set_binary_image(data::convert(bool(), doc.image()));
+
+ // Extract lines
+ line_set<L>
+ lines = scribo::text::extract_lines_wo_merge(doc, c8());
+ doc.set_paragraphs(scribo::make::paragraph(lines));
+
+ // Find alignments
+ mln::util::couple<component_set<L>, mln_ch_value_(L,bool)>
+ res = primitive::extract::alignments(doc, 3, 3);
+
+ std::ostringstream os_out;
+ image2d<bool> ref;
+ os_out << SCRIBO_TESTS_DIR << "/primitive/extract/alignment_"
+ << i << ".ref.pbm";
+
+ io::pbm::save(res.second(), "res.pbm");
+ io::pbm::load(ref, os_out.str().c_str());
+
+ mln_assertion(ref == res.second());
+ }
+
+}
--
1.5.6.5