00001 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development Laboratory 00002 // (LRDE) 00003 // 00004 // This file is part of Olena. 00005 // 00006 // Olena is free software: you can redistribute it and/or modify it under 00007 // the terms of the GNU General Public License as published by the Free 00008 // Software Foundation, version 2 of the License. 00009 // 00010 // Olena is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 // General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00017 // 00018 // As a special exception, you may use this file as part of a free 00019 // software project without restriction. Specifically, if other files 00020 // instantiate templates or use macros or inline functions from this 00021 // file, or you compile this file and link it with other files to produce 00022 // an executable, this file does not by itself cause the resulting 00023 // executable to be covered by the GNU General Public License. This 00024 // exception does not however invalidate any other reasons why the 00025 // executable file might be covered by the GNU General Public License. 00026 00027 #ifndef MLN_ACCU_SHAPE_HEIGHT_HH 00028 # define MLN_ACCU_SHAPE_HEIGHT_HH 00029 00034 /* 00035 This accumulator uses an mln::util::pix (pixel) to update the 00036 height information of the component. 00037 00038 The class mln/accu/height is not a general-purpose accumulator; 00039 it is used to implement height-based connected filters. 00040 \see mln::morpho::closing::height 00041 \see mln::morpho::opening::height 00042 */ 00043 00044 # include <mln/accu/internal/base.hh> 00045 # include <mln/core/concept/meta_accumulator.hh> 00046 00047 # include <mln/util/pix.hh> 00048 # include <mln/math/min.hh> 00049 # include <mln/math/max.hh> 00050 00051 namespace mln 00052 { 00053 00054 namespace accu 00055 { 00056 00057 namespace shape 00058 { 00059 00066 // 00067 template <typename I> 00068 struct height 00069 : public mln::accu::internal::base< unsigned , height<I> > 00070 { 00078 typedef util::pix<I> argument; 00080 typedef typename argument::value value; 00081 00082 height(); 00083 00086 void init(); 00087 void take(const argument&); 00088 void take(const height<I>& other); 00089 00091 void set_value(unsigned h); 00093 00095 unsigned to_result() const; 00096 00099 bool is_valid() const; 00100 00101 protected: 00103 value min_level__; 00105 value max_level__; 00107 unsigned height_; 00108 }; 00109 00110 00111 } // end of mln::accu::shape 00112 00113 00114 namespace meta 00115 { 00116 00117 namespace shape 00118 { 00119 00121 struct height : public Meta_Accumulator< height > 00122 { 00123 template <typename I> 00124 struct with 00125 { 00126 typedef accu::shape::height<I> ret; 00127 }; 00128 }; 00129 00130 } // end of namespace mln::accu::meta::shape 00131 00132 } // end of namespace mln::accu::meta 00133 00134 00135 # ifndef MLN_INCLUDE_ONLY 00136 00137 namespace shape 00138 { 00139 00140 template <typename I> 00141 inline 00142 height<I>::height() 00143 { 00144 init(); 00145 } 00146 00147 template <typename I> 00148 inline 00149 void 00150 height<I>::init() 00151 { 00152 min_level__ = mln_max(value); 00153 max_level__ = mln_min(value); 00154 height_ = 0; 00155 } 00156 00157 template <typename I> 00158 inline 00159 void 00160 height<I>::take(const argument& t) 00161 { 00162 min_level__ = mln::math::min(min_level__, t.v()); 00163 max_level__ = mln::math::max(max_level__, t.v()); 00164 height_ = max_level__ - min_level__; 00165 } 00166 00167 template <typename I> 00168 inline 00169 void 00170 height<I>::take(const height<I>& other) 00171 { 00172 min_level__ = mln::math::min(min_level__, other.min_level__); 00173 max_level__ = mln::math::max(max_level__, other.max_level__); 00174 height_ = max_level__ - min_level__; 00175 } 00176 00177 template <typename I> 00178 inline 00179 unsigned 00180 height<I>::to_result() const 00181 { 00182 return height_; 00183 } 00184 00185 template <typename I> 00186 inline 00187 void 00188 height<I>::set_value(unsigned h) 00189 { 00190 height_ = h; 00191 // Reset the other members. 00192 min_level__ = mln_max(value); 00193 max_level__ = mln_min(value); 00194 } 00195 00196 template <typename I> 00197 inline 00198 bool 00199 height<I>::is_valid() const 00200 { 00201 return true; 00202 } 00203 00204 } // end of namespace mln::accu::shape 00205 00206 # endif // ! MLN_INCLUDE_ONLY 00207 00208 } // end of namespace mln::accu 00209 00210 } // end of namespace mln 00211 00212 00213 #endif // ! MLN_ACCU_SHAPE_HEIGHT_HH