https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008/milena/sandbox Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Add demo code for Laurent N. * geraud/toto: Remove. * geraud/laurent: New. * geraud/laurent/wst2d.cc: New. * geraud/laurent/wst3d.cc: New. * geraud/laurent/classif.cc: New. * geraud/laurent/segmentation.hh: New. classif.cc | 115 +++++++++++++++++++++++++++++++++++++++++ segmentation.hh | 14 +++++ wst2d.cc | 154 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ wst3d.cc | 79 ++++++++++++++++++++++++++++ 4 files changed, 362 insertions(+) Index: geraud/laurent/wst2d.cc --- geraud/laurent/wst2d.cc (revision 0) +++ geraud/laurent/wst2d.cc (revision 0) @@ -0,0 +1,154 @@ +# include <cstdlib> + +# include <mln/value/int_u8.hh> +# include <mln/value/rgb8.hh> + +# include <mln/io/pgm/load.hh> +# include <mln/io/ppm/save.hh> + +# include <mln/core/var.hh> +# include <mln/core/image/image2d.hh> +# include <mln/core/alias/neighb2d.hh> +# include <mln/make/double_neighb2d.hh> + +# include <mln/level/transform.hh> +# include <mln/literal/black.hh> +# include <mln/debug/println.hh> + +# include <mln/morpho/closing_area.hh> +# include <mln/morpho/gradient.hh> +# include <mln/accu/min_max.hh> +# include <mln/morpho/meyer_wst.hh> + + +using namespace mln; +using value::int_u8; + + +template <typename I, typename N> +mln_concrete(I) +morpho_gradient(const Image<I>& input_, const Neighborhood<N>& nbh_) +{ + const I& input = exact(input_); + const N& nbh = exact(nbh_); + + mln_concrete(I) output; + initialize(output, input); + accu::min_max<mln_value(I)> mm; + + mln_piter(I) p(input.domain()); + mln_niter(N) n(nbh, p); + + for_all(p) + { + mm.take_as_init(input(p)); + for_all(n) + mm.take(input(n)); + output(p) = mm.second() - mm.first(); + } + + return output; +} + +struct colorize : Function_v2v< colorize > +{ + typedef value::rgb8 result; + colorize(unsigned max) + : lut(max + 1) + { + lut[0] = literal::black; + for (unsigned i = 1; i <= max; ++i) + lut[i] = result(100 + std::rand() % 150, + 100 + std::rand() % 150, + 100 + std::rand() % 150); + } + result operator()(unsigned i) const + { + return lut[i]; + } + std::vector<result> lut; +}; + + +bool is_chess(const point2d& p) +{ + return p.col() % 2 == p.row() % 2; +} + + +void usage(char* argv[]) +{ + std::cerr << "usage: " << argv[0] << " input.pgm nbh lambda output.ppm" << std::endl; + std::cerr << " nbh in {4, 6, 8}; lambda >= 0" << std::endl; + abort(); +} + + +template <typename I, typename N> +void do_it(const I& ima, + const N& nbh, + int lambda, + const std::string& filename) +{ + I grad = morpho_gradient(ima, nbh); + + I clo; + if (lambda > 1) + clo = morpho::closing_area(grad, nbh, lambda); + else + clo = grad; + + unsigned l; + mln_ch_value(I, unsigned) wst = morpho::meyer_wst(clo, nbh, l); + + std::cout << "nbasins = " << l << std::endl; +// debug::println(labeling::regional_minima(clo, nbh, l)); +// debug::println(wst); + + io::ppm::save(level::transform(wst, colorize(l)), filename); +} + + +int main(int argc, char* argv[]) +{ + if (argc != 5) + usage(argv); + + image2d<int_u8> ima; + + io::pgm::load(ima, argv[1]); + + int nbh_ = atoi(argv[2]); + if (! (nbh_ == 4 || nbh_ == 6 || nbh_ == 8)) + usage(argv); + + int lambda = atoi(argv[3]); + if (lambda < 0) + usage(argv); + + std::string filename(argv[4]); + + if (nbh_ == 4) + { + mln_VAR(nbh, c4()); + do_it(ima, nbh, lambda, filename); + } + else if (nbh_ == 8) + { + mln_VAR(nbh, c8()); + do_it(ima, nbh, lambda, filename); + } + else if (nbh_ == 6) + { + bool vert[] = { 1, 1, 0, + 1, 0, 1, + 0, 1, 1 }; + + bool hori[] = { 0, 1, 1, + 1, 0, 1, + 1, 1, 0 }; + + mln_VAR(nbh, make::double_neighb2d(is_chess, vert, hori)); + do_it(ima, nbh, lambda, filename); + } +} Index: geraud/laurent/wst3d.cc --- geraud/laurent/wst3d.cc (revision 0) +++ geraud/laurent/wst3d.cc (revision 0) @@ -0,0 +1,79 @@ +# include <cstdlib> +# include <cstdio> + +# include <mln/value/int_u16.hh> +# include <mln/value/int_u8.hh> +# include <mln/level/stretch.hh> + +# include <mln/io/pgm/load.hh> +# include <mln/io/ppm/save.hh> + +# include <mln/core/var.hh> +# include <mln/core/image/image3d.hh> +# include <mln/core/alias/neighb3d.hh> + +# include <mln/morpho/meyer_wst.hh> +# include <mln/morpho/closing_area.hh> +# include <mln/morpho/closing_volume.hh> + + + +using namespace mln; +using value::int_u8; + + +void usage(char* argv[]) +{ + std::cerr << "usage: " << argv[0] << " input.raw lambda output.ppm" << std::endl; + std::cerr << " lambda >= 0" << std::endl; + abort(); +} + + + +int main(int argc, char* argv[]) +{ + using namespace mln; + using value::int_u8; + using value::int_u16; + + if (argc != 3) + usage(argv); + + trace::quiet = false; + + image3d<int_u16> ima16(256, 256, 256, 0); + int size = 256 * 256 * 256 * 2; + + std::FILE* file = std::fopen(argv[1], "r"); + std::fread(ima16.buffer(), size, 1, file); + +// typedef image3d<int_u16> I; +// mln_piter_(I) p(ima16.domain()); +// for_all(p) +// if (ima16(p) != 0) +// std::cout << ima16(p) << std::endl; + +// abort(); + + int_u16 min_, max_; + estim::min_max(ima16, min_, max_); + std::cout << min_ << ' ' << max_ << std::endl; + + abort(); + + image3d<int_u8> ima(ima16.domain()); + level::stretch(ima16, ima); + ima16.destroy(); + + int lambda = atoi(argv[2]); + if (lambda < 0) + usage(argv); + + image3d<int_u8> clo(ima.domain()); + morpho::closing_volume(ima, c6(), lambda, clo); + + unsigned nbasins; + image3d<unsigned> wst = morpho::meyer_wst(clo, c6(), nbasins); + std::cout << "nbasins = " << nbasins << std::endl; +} Index: geraud/laurent/classif.cc --- geraud/laurent/classif.cc (revision 0) +++ geraud/laurent/classif.cc (revision 0) @@ -0,0 +1,115 @@ +#include <vector> +#include <mln/core/image/image2d.hh> +#include <mln/core/routine/clone.hh> +#include <mln/core/alias/neighb2d.hh> +#include <mln/core/site_set/p_queue_fast.hh> +#include <mln/labeling/blobs.hh> +#include <mln/io/pbm/load.hh> +#include <mln/debug/println.hh> + + +namespace mln +{ + + template <typename I, typename N> + mln_concrete(I) + influence_zones(const I& input, const N& nbh) + { + mln_concrete(I) output = clone(input); + + p_queue_fast<mln_site(I)> q; + + // Init. + { + mln_piter(I) p(input.domain()); + mln_niter(N) n(nbh, p); + for_all(p) + if (input(p) != 0) + for_all(n) if (input.has(n)) + if (input(n) == 0) + { + q.push(p); + break; + } + } + + // Body. + { + mln_site(I) p; + mln_niter(N) n(nbh, p); + while (! q.is_empty()) + { + p = q.pop_front(); + mln_invariant(output(p) != 0); + for_all(n) if (input.has(n)) + if (output(n) == 0) + { + output(n) = output(p); + q.push(n); + } + } + } + + return output; + + } // IZ + + + template <typename I> + void + mk_graph(const I& iz, unsigned nlabels) + { + std::vector< std::vector<bool> > adj(nlabels + 1); + for (unsigned l = 1; l <= nlabels; ++l) + adj[l].resize(l, false); + + mln_piter(I) p(iz.domain()); + for_all(p) + { + mln_site(I) r = p + right, b = p + down; + if (iz.has(r) && iz(p) != iz(r)) + { + if (iz(p) < iz(r)) + adj[iz(p)][iz(r)] = true; + else + adj[iz(r)][iz(p)] = true; + } + if (iz.has(b) && iz(p) != iz(b)) + { + if (iz(p) < iz(b)) + adj[iz(p)][iz(b)] = true; + else + adj[iz(b)][iz(p)] = true; + } + } + + for (unsigned l1 = 1; l1 <= nlabels; ++l1) + for (unsigned l2 = 1; l2 <= nlabels; ++l2) + if (adj[l1][l2]) + std::cout << l1 << ' ' << l2 << std::endl; + } + +} + + + +int main() +{ + using namespace mln; + + border::thickness = 0; + + image2d<bool> seeds; + io::pbm::load(seeds, "+seeds.pbm"); + + debug::println(seeds); + + unsigned n; + image2d<unsigned> label = labeling::blobs(seeds, c4(), n); + debug::println(label); + + image2d<unsigned> iz = influence_zones(label, c4()); + debug::println(iz); + + mk_graph(iz, n); +} Index: geraud/laurent/segmentation.hh --- geraud/laurent/segmentation.hh (revision 0) +++ geraud/laurent/segmentation.hh (revision 0) @@ -0,0 +1,14 @@ + + +template <typename I, typename N> +mln_ch_value(I, rgb8) segmentation(const I& ima, + const N& nbh, + unsigned area) +{ + mln_concrete(I) filtered = morpho::closing_area(ima, nbh, area); + + unsigned nbasins; + mln_ch_value(I, unsigned) wst = morpho::wst_meyer(filtered, nbh, nbasins); + + return level::transform(wst, colorize(nbasins)); +}