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Olena
User documentation 2.1
An Image Processing Platform
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ppm16.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/win/rectangle2d.hh>
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#include <mln/value/rgb8.hh>
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#include <mln/value/rgb16.hh>
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#include <mln/io/ppm/load.hh>
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#include <mln/io/ppm/save.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
to16bits :
mln::Function_v2v
<to16bits>
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{
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typedef
value::rgb16
result;
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result operator()(
value::rgb8
v)
const
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{
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result
ret
(v.
red
().to_enc() * 256,
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v.
green
().to_enc() * 256,
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v.
blue
().to_enc() * 256);
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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::rgb8
result;
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result operator()(
value::rgb16
v)
const
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{
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result
ret
(v.
red
().to_enc() / 256,
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v.
green
().to_enc() / 256,
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v.
blue
().to_enc() / 256);
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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::rgb8
;
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using
value::rgb16
;
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typedef
image2d<rgb8>
I;
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{
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// load a 8-bit image A
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image2d<rgb8>
a = io::ppm::load<rgb8>(MLN_IMG_DIR
"/lena.ppm"
);
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image2d<rgb16>
b(a.
domain
());
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image2d<rgb8>::fwd_piter
p
(b.domain());
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// save it as a 16-bit ppm image B
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to16bits f;
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for_all(
p
)
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b(
p
) = f(a(
p
));
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io::ppm::
save
(b, "ppm16-out16.ppm");
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// reload B into C
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image2d
<
rgb16
> c = io::ppm::
load
<
rgb16
>("ppm16-out16.ppm");
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image2d
<
rgb8
> d(a.domain());
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// save C as a 8-bit ppm image D
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to8bits g;
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for_all(p)
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d(p) = g(c(p));
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io::ppm::
save
(d, "ppm16-out8.ppm");
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// D shall equal A
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mln_assertion(d == a);
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}
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{
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// Abort
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// image2d<rgb8> a;
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// io::ppm::load(a, MLN_IMG_DIR "/lena_16.ppm");
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image2d< value::rgb<16>
> b;
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io::ppm::load
(b, MLN_IMG_DIR
"/lena_16.ppm"
);
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}
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{
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// Abort
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// image2d< value::rgb<8> > a =
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// io::ppm::load(MLN_IMG_DIR "/lena_16.ppm");
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// Abort
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// image2d< value::rgb<16> > a =
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// io::ppm::load< value::rgb<16> >(MLN_IMG_DIR "/lena.ppm");
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image2d< value::rgb<16>
> a =
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io::ppm::load< value::rgb<16> >(MLN_IMG_DIR
"/lena_16.ppm"
);
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image2d< value::rgb<8>
> b =
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io::ppm::load< value::rgb<8> >(MLN_IMG_DIR
"/lena.ppm"
);
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}
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}
tests
io
ppm
ppm16.cc
Copyright (C) 2012 EPITA Research and Development Laboratory (LRDE)