Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 2008, 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #ifndef MLN_MORPHO_ELEMENTARY_GRADIENT_INTERNAL_HH 00027 # define MLN_MORPHO_ELEMENTARY_GRADIENT_INTERNAL_HH 00028 00032 00033 # include <mln/morpho/elementary/like_ero_fun.hh> 00034 # include <mln/morpho/elementary/like_ero_set.hh> 00035 00036 00037 namespace mln 00038 { 00039 00040 namespace morpho 00041 { 00042 00043 namespace elementary 00044 { 00045 00046 00047 template <typename I, typename N> 00048 mln_concrete(I) 00049 gradient_internal(const Image<I>& input, const Neighborhood<N>& nbh); 00050 00051 00052 # ifndef MLN_INCLUDE_ONLY 00053 00054 namespace internal 00055 { 00056 00057 struct f_grad_int 00058 { 00059 template <typename V, typename A> 00060 V operator()(const V& input_p, const A& a) const 00061 { 00062 return input_p - a.to_result(); 00063 } 00064 }; 00065 00066 // Dispatch. 00067 00068 template <typename I, typename N> 00069 mln_concrete(I) 00070 gradient_internal_dispatch(trait::image::kind::any, 00071 const Image<I>& input, const Neighborhood<N>& nbh) 00072 { 00073 return like_ero_fun(accu::meta::stat::min(), f_grad_int(), input, nbh); 00074 } 00075 00076 template <typename I, typename N> 00077 mln_concrete(I) 00078 gradient_internal_dispatch(trait::image::kind::logic, 00079 const Image<I>& input, const Neighborhood<N>& nbh) 00080 { 00081 bool val[] = 00082 { 00083 1, // ext_value 00084 0, // do_duplicate 00085 1, // on_input_p 00086 0, // on_input_n 00087 1, // output_p 00088 }; 00089 return like_ero_set(val, input, nbh); 00090 } 00091 00092 template <typename I, typename N> 00093 mln_concrete(I) 00094 gradient_internal_dispatch(const Image<I>& input, const Neighborhood<N>& nbh) 00095 { 00096 return gradient_internal_dispatch(mln_trait_image_kind(I)(), 00097 input, nbh); 00098 } 00099 00100 } // end of namespace mln::morpho::elementary::internal 00101 00102 00103 // Facade. 00104 00105 template <typename I, typename N> 00106 mln_concrete(I) 00107 gradient_internal(const Image<I>& input, const Neighborhood<N>& nbh) 00108 { 00109 trace::entering("morpho::elementary::gradient_internal"); 00110 00111 mln_precondition(exact(input).is_valid()); 00112 mln_precondition(exact(nbh).is_valid()); 00113 00114 mln_concrete(I) output = internal::gradient_internal_dispatch(input, nbh); 00115 00116 mln_postcondition(output <= input); 00117 trace::exiting("morpho::elementary::gradient_internal"); 00118 return output; 00119 } 00120 00121 # endif // ! MLN_INCLUDE_ONLY 00122 00123 } // end of namespace mln::morpho::elementary 00124 00125 } // end of namespace mln::morpho 00126 00127 } // end of namespace mln 00128 00129 00130 #endif // ! MLN_MORPHO_ELEMENTARY_GRADIENT_INTERNAL_HH