[Olena-patches] proto-1.0 454: Update Watersnakes.

https://svn/svn/oln/prototypes/proto-1.0/olena Index: ChangeLog from Nicolas Widynski &lt;nicolas.widynski(a)lrde.epita.fr&gt; Update Watersnakes. * oln/morpho/watersnakes.hh: Little modifications. watersnakes.hh | 59 ++++++++++++++++++++++++++------------------------------- 1 file changed, 27 insertions(+), 32 deletions(-) Index: oln/morpho/watersnakes.hh --- oln/morpho/watersnakes.hh (revision 453) +++ oln/morpho/watersnakes.hh (working copy) @@ -46,7 +46,7 @@ const float INFTY = 1000000000000.f; -# define WSHED 255 +# define WSHED -2 # define MASK_VALUE -1 typedef enum version_t { TARJAN = 0, NORMAL = 1 } version; @@ -76,6 +76,7 @@ LS[p] = LS[p] > (float)(input[p] - input[n]) ? LS[p] : (float)(input[p] - input[n]); } } + return LS; } @@ -189,7 +190,6 @@ template <typename T> bool is_a_boundary_point(const image2d<int>& label, - const window2d& ng, const T& p, unsigned& label_b) { @@ -207,20 +207,18 @@ template <typename T> bool snake_iteration(image2d<T>& label, - const window2d& ng, const image2d<float *>& dist, - unsigned nb_compo, int b) { float dist_min = INFTY; point2d p_replace; - unsigned label_replace; + unsigned label_replace = 0; oln_iter_type(image2d<T>) p(label); for_all(p) { unsigned label_b; - if (is_a_boundary_point(label, ng, p, label_b)) + if (is_a_boundary_point(label, p, label_b)) { float tmp = - dist[p][label[p] - 1] + compute_perimeter(label, p, label[p], b) + dist[p][label_b - 1] - compute_perimeter(label, p, label_b, b); @@ -261,18 +259,15 @@ if (marqueur[p] == false) { dist[p][label[p] - 1] = input[p]; - for (int i = 0; i < nb_compo; i++) - if (i != label[p] - 1) + for (unsigned i = 0; i < nb_compo; i++) + if ((int)i != label[p] - 1) dist[p][i] = INFTY; } else - { - for (int i = 0; i < nb_compo; i++) + for (unsigned i = 0; i < nb_compo; i++) dist[p][i] = INFTY; } - } - int i = 0; bool stop = false; @@ -290,7 +285,7 @@ float grad = local_grad(input, LS, p, n); float tmp = chamfer_distance(p, n) * grad; - for (int k = 0; k < nb_compo; k++) + for (unsigned k = 0; k < nb_compo; k++) if (dist[p][k] + tmp < dist[n][k]) { dist[n][k] = dist[p][k] + tmp; @@ -311,7 +306,7 @@ float grad = local_grad(input, LS, p2, n); float tmp = chamfer_distance(p2, n) * grad; - for (int k = 0; k < nb_compo; k++) + for (unsigned k = 0; k < nb_compo; k++) if (dist[p2][k] + tmp < dist[n][k]) { dist[n][k] = dist[p2][k] + tmp; @@ -404,7 +399,6 @@ image2d<int> output(input.size()); level::fill(output, MASK_VALUE); - unsigned tmp; oln_iter_type(image2d<T>) p(input); for_all (p) @@ -415,7 +409,7 @@ } template<typename T, typename T2> - image2d<T> + std::vector<point2d> watershed_line(const image2d<T>& input, const image2d<T>& orig, const image2d<T2>& marqueur, @@ -423,17 +417,14 @@ int b, version v) { - image2d<T> res(input.size()); + image2d<int> final(input.size()); image2d<int> label; image2d<T2> mark(input.size()); oln_iter_type(image2d<T>) p(input); image2d<bool> is_wshed_line(input.size()); - float dist; - float tmp; + std::vector<point2d> res; unsigned nb_compo = 0; - int i = 0; - for_all(p) mark[p] = marqueur[p]; @@ -450,8 +441,8 @@ op_type op(marqueur, input, ng); recon = op.output; } - image2d<float> LS = lower_slope(recon, ng); + label = init_watershed_(recon, mark, ng, nb_compo); image2d<float*> topo = topographic_distance(recon, LS, mark, label, ng, nb_compo); @@ -460,8 +451,7 @@ { unsigned mini_label = 1; float mini_topo = topo[p][0]; - int h = 1; - for (; h < nb_compo; h++) + for (unsigned h = 1; h < nb_compo; h++) if (mini_topo > topo[p][h]) { mini_topo = topo[p][h]; @@ -469,28 +459,33 @@ } label[p] = mini_label; } - while (snake_iteration(label, ng, topo, nb_compo, b)) + + while (snake_iteration(label, topo, b)) ; - level::fill(res, 0); + level::fill(final, 0); for_all(p) { oln_neighb_type(window2d) q(win_c4p(), p); for_all (q) if (input.hold(q)) - if (label[p] != label[q] and res[q] != WSHED) - res[p] = WSHED; - if (res[p] == 0) - res[p] = orig[p]; + if (label[p] != label[q] and final[q] != WSHED) + final[p] = WSHED; + if (final[p] == 0) + final[p] = orig[p]; } + for_all(p) + if (final[p] == WSHED) + res.push_back(p); + return res; } template<typename T, typename T2> - image2d<T> + std::vector<point2d> watersnakes_(const image2d<T>& input, const image2d<T2>& marqueur, const window2d& ng, @@ -508,7 +503,7 @@ template<typename T, typename T2> - image2d<T> + std::vector<point2d> watersnakes(const image2d<T>& input, const image2d<T2>& marqueur, const window2d& ng,