00001 // Copyright (C) 2007, 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 #include <mln/core/image/image2d.hh> 00027 00028 #include <mln/value/int_u8.hh> 00029 00030 #include <mln/io/pgm/load.hh> 00031 #include <mln/io/pgm/save.hh> 00032 00033 #include <mln/data/transform.hh> 00034 #include <mln/data/compare.hh> 00035 00036 #include "tests/data.hh" 00037 00038 00039 using namespace mln; 00040 00041 struct to27bits : mln::Function_v2v<to27bits> 00042 { 00043 00044 typedef value::int_u<27> result; 00045 result operator()(value::int_u8 v) const 00046 { 00047 result ret(v * 524288); 00048 return ret; 00049 } 00050 }; 00051 00052 struct to8bits : mln::Function_v2v<to8bits> 00053 { 00054 00055 typedef value::int_u8 result; 00056 result operator()(value::int_u<27> v) const 00057 { 00058 result ret(v / 524288); 00059 return ret; 00060 } 00061 }; 00062 00063 00064 int main() 00065 { 00066 using namespace mln; 00067 using value::int_u8; 00068 using value::int_u; 00069 typedef value::int_u<27> int_u27; 00070 00071 image2d<int_u8> lena = io::pgm::load<int_u8>(MLN_IMG_DIR "/lena.pgm"); 00072 image2d<int_u27> out(lena.domain()); 00073 00074 out = data::transform(lena, to27bits()); 00075 io::pgm::save(out, "out27.pgm"); 00076 00077 image2d<int_u27> lena2; 00078 io::pgm::load(lena2, "out27.pgm"); 00079 00080 image2d<int_u8> out2(lena.domain()); 00081 out2 = data::transform(lena2, to8bits()); 00082 io::pgm::save(out2, "out8.pgm"); 00083 assert(out2 == lena); 00084 00085 }
1.5.6