URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2008-01-14 Guillaume Duhamel <guillaume.duhamel@lrde.epita.fr> Update extract character. * sandbox/nivault/extract_character.cc: The lines of text have a green bbox in out.ppm. --- extract_character.cc | 170 ++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 121 insertions(+), 49 deletions(-) Index: trunk/milena/sandbox/nivault/extract_character.cc =================================================================== --- trunk/milena/sandbox/nivault/extract_character.cc (revision 1656) +++ trunk/milena/sandbox/nivault/extract_character.cc (revision 1657) @@ -77,7 +77,7 @@ unsigned rows = box.nrows(); unsigned cols = box.ncols(); unsigned size = rows * cols; - float ratio = (float) (rows * cols) / cardinality; +// float ratio = (float) (rows * cols) / cardinality; /// Remove noise. if ((rows < 5) && (cols < 5)) @@ -122,7 +122,7 @@ template <typename I> void -draw_bbox(I& image, box2d box) +draw_bbox(I& image, box2d box, value::rgb8 val) { point2d pmin = box.pmin(); point2d pmax = box.pmax(); @@ -132,12 +132,82 @@ point2d p3 (pmin[0], pmax[1]); point2d p4 (pmax[0], pmax[1]); - draw::line (image, p1, p2, literal::red); - draw::line (image, p2, p4, literal::red); - draw::line (image, p4, p3, literal::red); - draw::line (image, p3, p1, literal::red); + draw::line (image, p1, p2, val); + draw::line (image, p2, p4, val); + draw::line (image, p4, p3, val); + draw::line (image, p3, p1, val); } +template <typename I, typename O> +void +extract_lines(I& text_image, O& output, + std::vector< accu::bbox <point2d> >& v_bbox) +{ + typedef image2d<unsigned> I_LABEL; + + typedef std::list< accu::bbox <point2d> > L; + + L list_lines; + + I image = clone(text_image); + + point2d start = text_image.domain().pmin (); + point2d end = text_image.domain().pmax (); + + unsigned limits = 50; + + for (unsigned r = start[1]; r < end[1]; ++r) + { + for (unsigned c = start[0]; c < end[0]; ++c) + { + bool ok = false; + unsigned i = 0; + accu::bbox<point2d> accu; + { + bool okk = true; + while (okk) + { + okk = false; + for (i = c; i < end[0] && i < c + limits; ++i) + { + unsigned value = image(point2d(r, i)); + if (value != 0) + { + typedef sub_image<I_LABEL, box2d> I_SUB; + typedef image_if_value<I_SUB> I_VAL; + + I_SUB sub_image = (text_image | v_bbox[value].to_result()); + I_VAL val_image = (sub_image | value); + + mln_piter_(I_VAL) p(val_image.domain()); + + for_all (p) + { + accu.take(p); + image(p) = 0; + } + ok = true; + okk = true; + c = i; + } + } + } + } + if (ok) + list_lines.push_back(accu); + } + } + + L::const_iterator it = list_lines.begin(); + for (; it != list_lines.end(); ++it) + { + box2d b = (*it).to_result (); + draw_bbox (output, b, literal::green); + } +} + + + template <typename I> void check_with_ref(I& image, std::string path_ref, std::string path_output) @@ -169,7 +239,7 @@ mask(p) = literal::green; ++cpt; } - io::ppm::save(mask, path_output + "check.ppm"); + io::ppm::save(mask, path_output + ".check.ppm"); std::cout << "Reussite : " << (float)ok / (float)cpt * 100 << "% (" << ok << "/" << cpt << ")." << std::endl; } @@ -203,18 +273,11 @@ morpho::complementation_inplace(input); - /// FIXME : Some code was deleted here :-) (Remove noise) -// win::disk2d win (2); -// input2 = morpho::dilation(input, win); -// io::pbm::save (output, path_output); - - /// Labeling the input image. unsigned nb_labels; I_LABEL label_image = labeling::blobs(input, c8(), nb_labels); std::cout << "nb_labels = " << nb_labels << std::endl; - /// Extraction of informations in the image (BoundingBox, Cardinality, ... ). std::vector< accu::bbox <point2d> > vec_bbox (nb_labels + 1); std::vector< accu::count_<point2d> > vec_card (nb_labels + 1); @@ -228,7 +291,6 @@ vec_card[label_image(p)].take (p); } - /// Generation of the text image (text_image). I_LABEL text_image (label_image.domain()); for (unsigned i = 0; i <= nb_labels; ++i) @@ -253,52 +315,62 @@ text_image(p) = val_image(p); /// Here is the good way to do the previous action. -// level::paste (val_ima, text_ima); +// level::paste (val_ima, text_image } } - /// Generation of the graph from text image. - I_LABEL zi_image = geom::seeds2tiling(text_image, c4 ()); - mesh_p<point2d> m = make::voronoi(zi_image, text_image, c4()); - I_LABEL gr_image (label_image.domain ()); - I_LABEL gr_image2 (label_image.domain ()); - draw::mesh(gr_image, m, 255, 128); - draw::mesh(gr_image2, m, 255, 0); + /// Extraction of lines. + extract_lines(text_image, output, vec_bbox); + + +// /// Generation of the graph from text image. +// I_LABEL zi_image = geom::seeds2tiling(text_image, c4 ()); +// mesh_p<point2d> m = make::voronoi(zi_image, text_image, c4()); +// I_LABEL gr_image (label_image.domain ()); +// I_LABEL gr_image2 (label_image.domain ()); +// draw::mesh(gr_image, m, 255, 128); +// draw::mesh(gr_image2, m, 255, 0); + + +// /// Dilation of node of the graph. +// win::disk2d win (30); +// I_LABEL pr = morpho::dilation(gr_image2, win); +// I bool_ima (label_image.domain ()); +// level::paste(pr, bool_ima); - /// Dilation of node of the graph. - win::disk2d win (30); - I_LABEL pr = morpho::dilation(gr_image2, win); - I bool_ima (label_image.domain ()); - level::paste(pr, bool_ima); +// /// Labeling the dilated image. +// unsigned nb_dilated_node_labels; +// I_LABEL label_image2 = labeling::blobs(bool_ima, c8(), nb_dilated_node_labels); +// std::cout << "nb_dilated_node_labels = " << nb_dilated_node_labels << std::endl; +// std::vector< accu::bbox <point2d> > vec_bbox2 (nb_dilated_node_labels + 1); - /// Labeling the dilated image. - unsigned nb_dilated_node_labels; - I_LABEL label_image2 = labeling::blobs(bool_ima, c8(), nb_dilated_node_labels); - std::cout << "nb_dilated_node_labels = " << nb_dilated_node_labels << std::endl; - std::vector< accu::bbox <point2d> > vec_bbox2 (nb_dilated_node_labels + 1); +// /// Extract area of text. +// mln_piter_(I_LABEL) pl (label_image.domain ()); +// for_all (pl) +// vec_bbox2[label_image2(pl)].take (pl); - /// Extract area of text. - mln_piter_(I_LABEL) pl (label_image.domain ()); - for_all (pl) - vec_bbox2[label_image2(pl)].take (pl); +// /// Draw the bounding box of area of text in output. +// for (unsigned i = 0; i <= nb_dilated_node_labels; ++i) +// draw_bbox(output, vec_bbox2[i].to_result(), literal::red); - /// Draw the bounding box of area of text in output. - for (unsigned i = 0; i <= nb_dilated_node_labels; ++i) - draw_bbox(output, vec_bbox2[i].to_result()); +// image2d<int_u8> out (label_image.domain ()); - image2d<int_u8> out (label_image.domain ()); +// /// Save the influence area of the node of the graphe (seed2tiling result). +// level::stretch (zi_image, out); +// io::pgm::save(out, path_output + ".text_area.approx.pgm"); +// std::cout << path_output + ".text_area.approx.pgm" << " generated" << std::endl; - /// Save the influence area of the node of the graphe (seed2tiling result). - level::stretch (zi_image, out); - io::pgm::save(out, path_output + ".text_area.approx.pgm"); - std::cout << path_output + ".text_area.approx.pgm" << " generated" << std::endl; +// /// Save the graph of the text. +// level::stretch (gr_image, out); +// io::pgm::save(out, path_output + ".text_graph.pgm"); +// std::cout << path_output + ".text_graph.pgm" << " generated" << std::endl; - /// Save the graph of the text. - level::stretch (gr_image, out); - io::pgm::save(out, path_output + ".text_graph.pgm"); - std::cout << path_output + ".text_graph.pgm" << " generated" << std::endl; +// /// Save the graph of the text. +// level::stretch (text_image, out); +// io::pgm::save(out, path_output + ".text.pgm"); +// std::cout << path_output + ".text.pgm" << " generated" << std::endl; /// Save the output image (input image + bounding box text in red).