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pgm27.cc
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// Copyright (C) 2007, 2008, 2009, 2010 EPITA Research and Development
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// Laboratory (LRDE)
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//
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// This file is part of Olena.
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//
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// Olena is free software: you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation, version 2 of the License.
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//
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// Olena is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Olena. If not, see <http://www.gnu.org/licenses/>.
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//
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// As a special exception, you may use this file as part of a free
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// software project without restriction. Specifically, if other files
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// instantiate templates or use macros or inline functions from this
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// file, or you compile this file and link it with other files to produce
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// an executable, this file does not by itself cause the resulting
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// executable to be covered by the GNU General Public License. This
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// exception does not however invalidate any other reasons why the
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// executable file might be covered by the GNU General Public License.
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#include <mln/core/image/image2d.hh>
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#include <mln/value/int_u8.hh>
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#include <mln/io/pgm/load.hh>
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#include <mln/io/pgm/save.hh>
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#include <mln/data/transform.hh>
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#include <mln/data/compare.hh>
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#include "tests/data.hh"
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using namespace
mln;
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struct
to27bits :
mln::Function_v2v
<to27bits>
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{
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typedef
value::int_u<27>
result;
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result operator()(
value::int_u8
v)
const
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{
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result ret(v * 524288);
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return
ret;
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}
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};
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struct
to8bits :
mln::Function_v2v
<to8bits>
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{
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typedef
value::int_u8
result;
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result operator()(
value::int_u<27>
v)
const
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{
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result ret(v / 524288);
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return
ret;
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}
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};
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int
main()
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{
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using namespace
mln;
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using
value::int_u8
;
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using
value::int_u
;
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typedef
value::int_u<27>
int_u27;
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image2d<int_u8>
lena = io::pgm::load<int_u8>(MLN_IMG_DIR
"/lena.pgm"
);
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image2d<int_u27>
out(lena.domain());
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out =
data::transform
(lena, to27bits());
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io::pgm::save
(out,
"pgm27-out27.pgm"
);
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image2d<int_u27>
lena2;
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io::pgm::load
(lena2,
"pgm27-out27.pgm"
);
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image2d<int_u8>
out2(lena.domain());
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out2 =
data::transform
(lena2, to8bits());
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io::pgm::save
(out2,
"pgm27-out8.pgm"
);
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assert(out2 == lena);
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}
tests
io
pgm
pgm27.cc
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