[Olena-patches] proto-1.0 421: Watersnakes : add reconstruction by erosion with tarjan union-find.

https://svn/svn/oln/prototypes/proto-1.0/olena Index: ChangeLog from Nicolas Widynski &lt;nicolas.widynski(a)lrde.epita.fr&gt; Watersnakes : add reconstruction by erosion with tarjan union-find. * oln/morpho/watersnakes.hh: Add reconstruction by erosion with tarjan union-find (quicker). watersnakes.hh | 36 ++++++++++++++++++++++++++++-------- 1 file changed, 28 insertions(+), 8 deletions(-) Index: oln/morpho/watersnakes.hh --- oln/morpho/watersnakes.hh (revision 420) +++ oln/morpho/watersnakes.hh (working copy) @@ -1,4 +1,4 @@ -// Copyright (C) 2001, 2002, 2003, 2004, 2006 EPITA Research and Development Laboratory +// Copyright (C) 2006 EPITA Research and Development Laboratory // // This file is part of the Olena Library. This library is free // software; you can redistribute it and/or modify it under the terms @@ -37,9 +37,18 @@ # include <oln/level/compare.hh> # include <oln/morpho/gradient_morpho.hh> +# include <oln/basics2d.hh> +# include <oln/level/fill.hh> +# include <ntg/basics.hh> + +# include "misc.hh" +# include "Rs.hh" + + const float INFTY = 1000000000000.f; # define WSHED 255 # define MASK_VALUE -1 +typedef enum version_t { TARJAN = 0, NORMAL = 1 } version; namespace oln { @@ -66,7 +75,6 @@ if (input[n] < input[p]) LS[p] = LS[p] > (float)(input[p] - input[n]) ? LS[p] : (float)(input[p] - input[n]); } - LS[p] = LS[p] == 256 ? 0 : LS[p]; } return LS; } @@ -412,7 +420,8 @@ const image2d<T>& orig, const image2d<T2>& marqueur, const window2d& ng, - int b) + int b, + version v) { image2d<T> res(input.size()); image2d<int> label; @@ -431,7 +440,16 @@ for_all(p) propagate_minima_(input, mark, ng, p); - image2d<T> recon = reconstruction_by_erosion(input, mark); + image2d<T> recon; + + if (v == NORMAL) + recon = reconstruction_by_erosion(input, mark); + else + { // version de tarjan + typedef Rs::tarjan< image2d<T2>, image2d<T> > op_type; + op_type op(marqueur, input, ng); + recon = op.output; + } image2d<float> LS = lower_slope(recon, ng); label = init_watershed_(recon, mark, ng, nb_compo); @@ -476,12 +494,13 @@ watersnakes_(const image2d<T>& input, const image2d<T2>& marqueur, const window2d& ng, - int b) + int b, + version v) { image2d<T> grad(input.size()); grad = morpho::gradient_morpho(input, ng); - return watershed_line(grad, input, marqueur, ng, b); + return watershed_line(grad, input, marqueur, ng, b, v); } @@ -493,9 +512,10 @@ watersnakes(const image2d<T>& input, const image2d<T2>& marqueur, const window2d& ng, - int b) + int b, + version v = TARJAN) { - return impl::watersnakes_(input, marqueur, ng, b); + return impl::watersnakes_(input, marqueur, ng, b, v); } } // end of oln::morpho