[Olena-patches] 2999: Update n_cmpt3.

https://svn.lrde.epita.fr/svn/oln/trunk/milena/sandbox Index: ChangeLog from Ugo Jardonnet &lt;ugo.jardonnet(a)lrde.epita.fr&gt; Update n_cmpt3. * jardonnet/n_cmpt/n_cmpt3.hh: Update cmpts--. * jardonnet/n_cmpt/n_cmpt3.cc: Try to use 1d image. n_cmpt3.cc | 7 ++++++- n_cmpt3.hh | 35 ++++++++++++++++------------------- 2 files changed, 22 insertions(+), 20 deletions(-) Index: jardonnet/n_cmpt/n_cmpt3.hh --- jardonnet/n_cmpt/n_cmpt3.hh (revision 2998) +++ jardonnet/n_cmpt/n_cmpt3.hh (working copy) @@ -61,19 +61,6 @@ return parent(x) = find_root(parent, parent(x)); } - template < typename I > - unsigned count_minima(const I& ima) - { - unsigned cmpt = 0; - mln_piter(I) p(ima.domain()); - for_all(p) - { - if (ima(p) != literal::zero) - cmpt++; - } - return cmpt; - } - template < typename I, typename N> I n_cmpt3(const I& ima, const N& nbh, @@ -91,7 +78,7 @@ // compute volume image typedef p_array<mln_psite(I)> S; - typedef image2d<unsigned> V; + typedef mln_ch_value(I,unsigned) V; typedef accu::volume<I> A; S sp = level::sort_psites_decreasing(ima); @@ -152,20 +139,30 @@ P r = find_root(parent, n); if (r != p) { + // One cmpt less if + if (volume(r) != volume(p)) // r and p have differerent volumes + if (not volume_set(p).is_empty()) // r already belong to a cmpt + if (volume_set(p) != volume_set(r)) // cmpt r and p are different + if (cmpts > lambda) // union is still alowed + cmpts--; + + if (cmpts > lambda || + volume(r) == volume(p) || + volume_set(p).is_empty()) + { + parent(r) = p; // propagate set volume_set(p).insert(volume_set(r)); - // build tree - parent(r) = p; + } } } } deja_vu(p) = true; } - debug::println(volume_set); - step2: -// std::cout << "Nb cmpts after processing : " << cmpts << std::endl; + debug::println(volume_set); + std::cout << "Nb cmpts after processing : " << cmpts << std::endl; // second pass I output(ima.domain()); Index: jardonnet/n_cmpt/n_cmpt3.cc --- jardonnet/n_cmpt/n_cmpt3.cc (revision 2998) +++ jardonnet/n_cmpt/n_cmpt3.cc (working copy) @@ -5,6 +5,8 @@ #include <mln/core/alias/neighb2d.hh> #include <mln/value/int_u8.hh> +#include <mln/make/image.hh> + #include <mln/io/pgm/load.hh> #include <mln/io/pgm/save.hh> @@ -32,6 +34,9 @@ io::pgm::load(ima, argv[1]); unsigned lambda = atoi(argv[2]); - io::pgm::save(n_cmpt::n_cmpt3(ima, c4(), lambda), + int_u8 tab[] = {2,3,1,0,2,3,2,2,1}; + image1d<int_u8> ima1= make::image(tab); + + io::pgm::save(n_cmpt::n_cmpt3(ima1, c4(), lambda), "out.pgm"); }