[Olena-patches] 3643: Add a new variant of clean_lines.

* icdar/2009/hsc/clean_lines_with_grouped_bboxes.hh: new routine. --- milena/sandbox/ChangeLog | 6 + .../2009/hsc/clean_lines_with_grouped_bboxes.hh | 104 ++++++++++++++++++++ 2 files changed, 110 insertions(+), 0 deletions(-) create mode 100644 milena/sandbox/icdar/2009/hsc/clean_lines_with_grouped_bboxes.hh diff --git a/milena/sandbox/ChangeLog b/milena/sandbox/ChangeLog index 3dcb53c..cb72928 100644 --- a/milena/sandbox/ChangeLog +++ b/milena/sandbox/ChangeLog @@ -1,3 +1,9 @@ +2009-04-08 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + + Add a new variant of clean_lines. + + * icdar/2009/hsc/clean_lines_with_grouped_bboxes.hh: new routine. + 2009-04-08 Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Update. diff --git a/milena/sandbox/icdar/2009/hsc/clean_lines_with_grouped_bboxes.hh b/milena/sandbox/icdar/2009/hsc/clean_lines_with_grouped_bboxes.hh new file mode 100644 index 0000000..8942e83 --- /dev/null +++ b/milena/sandbox/icdar/2009/hsc/clean_lines_with_grouped_bboxes.hh @@ -0,0 +1,104 @@ +#ifndef CLEAN_LINESWITH_GROUPED_BBOXES_HH +# define CLEAN_LINESWITH_GROUPED_BBOXES_HH + +#include <mln/core/image/image2d.hh> +#include <mln/core/alias/neighb2d.hh> +#include <mln/labeling/background.hh> +#include <mln/value/int_u8.hh> +#include <mln/value/label_8.hh> +#include <mln/value/label_16.hh> +#include <mln/io/pbm/load.hh> +#include <mln/io/pgm/all.hh> +#include <mln/labeling/compute.hh> +#include <mln/pw/all.hh> +#include <mln/core/image/image_if.hh> +#include <mln/data/fill.hh> +#include <mln/literal/colors.hh> +#include <mln/logical/not.hh> +#include "label_maj.hh" + +#include <scribo/text/grouping/group_with_single_left_link.hh> +#include <scribo/text/grouping/group_with_single_right_link.hh> +#include <scribo/text/grouping/group_from_double_link.hh> +#include <scribo/make/text.hh> +#include <scribo/util/text.hh> +#include <scribo/debug/save_textbboxes_image.hh> + +namespace mln +{ + + template <typename I, typename L> + mln_concrete(L) + clean_lines_with_grouped_bboxes(const Image<I>& input, + const Image<L>& lines_, + float maj_threshold); + + +# ifndef MLN_INCLUDE_ONLY + + template <typename I, typename L> + mln_concrete(L) + clean_lines_with_grouped_bboxes(const Image<I>& input, + const Image<L>& lines_, + float maj_threshold) + { + trace::entering("clean_lines_with_grouped_bboxes"); + + const L& lines = exact(lines_); + mln_precondition(lines.is_valid()); + typedef value::label_16 LV; + + LV nlabels; + scribo::util::text<mln_ch_value(I,LV)> + text = scribo::make::text(logical::not_(input), c8(), nlabels); + + //Link character bboxes to their left neighboor if possible. + mln::util::array<unsigned> + left_link = scribo::text::grouping::group_with_single_left_link(text, 30); + mln::util::array<unsigned> + right_link = scribo::text::grouping::group_with_single_right_link(text, 30); + + text = scribo::text::grouping::group_from_double_link(text, + left_link, + right_link); + + +// mln_ch_value(L,LV) lbl = labeling::background(input, c8(), nlabels); +// util::array<box<mln_site(L)> > +// bboxes = labeling::compute(accu::meta::bbox(), lbl, nlabels); + + nlabels = text.nbboxes(); + const image2d<value::label_16>& lbl = text.label_image(); + util::array<box<mln_site(L)> > + bboxes = labeling::compute(accu::meta::bbox(), lbl, nlabels); + text.bboxes() = bboxes; + scribo::debug::save_textbboxes_image(input, text.bboxes(), literal::red, "plop.ppm"); + + /// Compute the most represented label for each component. + accu::label_maj<LV, mln_value(L)> accu(nlabels.next()); + mln_piter(image2d<mln_value(L)>) p(lbl.domain()); + for_all(p) + if (lines(p) != 0u) + accu.take(lbl(p), lines(p)); + + mln_concrete(L) output = duplicate(lines); + + // Rebuild components. + util::array<util::couple<mln_value(L), float> > res = accu.to_result(); + for (unsigned i = 1; i < res.nelements(); ++i) + if (res[i].second() >= maj_threshold) + data::fill(((output | bboxes[i]).rw() + | (pw::value(lbl) == pw::cst(i))).rw(), + res[i].first()); +// else +// std::cout << res[i].first() << " - " << res[i].second() << std::endl; + + trace::exiting("clean_lines_with_grouped_bboxes"); + return output; + } + +# endif // ! MLN_INCLUDE_ONLY + +} // end of namespace mln + +#endif // CLEAN_LINESWITH_GROUPED_BBOXES_HH -- 1.5.6.5