[Olena-patches] 3030: Update nwst.

https://svn.lrde.epita.fr/svn/oln/trunk/milena/sandbox Index: ChangeLog from Ugo Jardonnet &lt;jardonnet(a)lrde.epita.fr&gt; Update nwst. * jardonnet/n_cmpt/nwst.hh: Update. Mark local minima. * jardonnet/n_cmpt/wst.cc: New. Add wst ref. nwst.hh | 19 +++++++++++-------- wst.cc | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+), 8 deletions(-) Index: jardonnet/n_cmpt/nwst.hh --- jardonnet/n_cmpt/nwst.hh (revision 3029) +++ jardonnet/n_cmpt/nwst.hh (working copy) @@ -81,9 +81,11 @@ // sort ima psites typedef mln_psite(I) P; typedef p_array<P> S; - S sp = level::sort_psites_decreasing(ima); - + S sp = level::sort_psites_increasing(ima); + // init watershed image + mln_ch_value(I, value::rgb8) wst(ima.domain()); + mln::level::fill(wst, literal::black); // number of minima unsigned cmpts = label; @@ -107,7 +109,10 @@ { parent(p) = p; if (min(p) != 0) // p in a reg min of the attribute image + { fused(p) = true; // ok + wst(p) = literal::red; + } } } @@ -115,10 +120,6 @@ std::cout << cmpts << " : "; std::cout << std::endl; - // init watershed image - mln_ch_value(I, value::rgb8) wst(ima.domain()); - mln::level::fill(wst, literal::black); - // union find mln_fwd_piter(S) p(sp); mln_niter(N) n(nbh, p); @@ -138,8 +139,6 @@ if (cmpts >= lambda) // union is still alowed if (fused(p)) // p already belong to a cmpt (fused for an another n) cmpts--; - else - wst(p) = literal::red; if (cmpts >= lambda || ima(r) == ima(p) || @@ -156,6 +155,10 @@ std::cout << "ima " << ima(p) << " - " << cmpts << std::endl; debug::println(fused); } + + // mark limit point + if (parent(p) != parent(n)) + wst(p) = literal::red; } } } Index: jardonnet/n_cmpt/wst.cc --- jardonnet/n_cmpt/wst.cc (revision 0) +++ jardonnet/n_cmpt/wst.cc (revision 0) @@ -0,0 +1,46 @@ + +#include <iostream> + +#include <mln/core/image/image2d.hh> +#include <mln/core/alias/neighb2d.hh> +#include <mln/value/int_u8.hh> + +#include <mln/make/image.hh> +#include <mln/core/alias/neighb1d.hh> + +#include <mln/morpho/meyer_wst.hh> + +#include <mln/io/pgm/load.hh> +#include <mln/io/pgm/save.hh> + +#include "nwst.hh" + +using namespace mln; +using namespace mln::value; + +bool usage(int argc, char ** argv) +{ + if (argc != 3) + { + std::cout << argv[0] << " ima.pgm lambda" << std::endl; + return false; + } + return true; +} + +int main(int argc, char ** argv) +{ + if (not usage(argc,argv)) + return 1; + + image2d<int_u8> ima; + io::pgm::load(ima, argv[1]); + unsigned lambda = atoi(argv[2]); + + ima(point2d(0,3)) = 106; + + int_u8 label; + io::pgm::save(morpho::meyer_wst(ima, c4(), label), + "meyer_wst.ppm"); + std::cout << label << std::endl; +}