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00028 #ifndef OLENA_MORPHO_EROSION_HH
00029 # define OLENA_MORPHO_EROSION_HH
00030
00031 # include <oln/basics.hh>
00032 # include <oln/morpho/stat.hh>
00033 # include <oln/morpho/fast_morpho.hh>
00034 # include <mlc/cmp.hh>
00035
00036 namespace oln {
00037
00038 namespace morpho {
00084 template<class I, class E>
00085 oln_concrete_type(I)
00086 erosion(const abstract::non_vectorial_image<I>& input,
00087 const abstract::struct_elt<E>& se)
00088 {
00089 mlc::eq<I::dim, E::dim>::ensure();
00090 oln_concrete_type(I) output(input.size());
00091 input.border_adapt_copy(se.delta());
00092 oln_iter_type(I) p(input);
00093 for_all (p)
00094 output[p] = morpho::min(input, p, se);
00095 return output;
00096 }
00097
00131 template<class I, class E>
00132 oln_concrete_type(I)
00133 n_erosion(const abstract::non_vectorial_image<I> & input,
00134 const abstract::struct_elt<E>& se,
00135 unsigned n)
00136 {
00137
00138 precondition(n > 0);
00139 oln_concrete_type(I) output = input.clone();
00140 for (unsigned i = 0; i < n; ++i)
00141 {
00142 oln_concrete_type(I) work = erosion(output, se);
00143 output = work;
00144 }
00145 return output;
00146 }
00147
00148 namespace fast {
00183 template<class I, class E>
00184 oln_concrete_type(I)
00185 erosion(const abstract::non_vectorial_image<I>& input,
00186 const abstract::struct_elt<E>& se)
00187 {
00188 return fast_morpho<I, E, utils::histogram_min<oln_value_type(I)> >
00189 (input, se);
00190 }
00191 }
00192
00193 }
00194
00195 }
00196
00197
00198 #endif // ! OLENA_MORPHO_EROSION_HH