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An Image Processing Platform
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rgb_to_luma.hh
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// Copyright (C) 2011 EPITA Research and Development 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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#ifndef MLN_FUN_V2V_RGB_TO_LUMA_HH
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# define MLN_FUN_V2V_RGB_TO_LUMA_HH
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# include <mln/value/rgb.hh>
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namespace
mln
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{
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namespace
fun
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{
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namespace
v2v
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{
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template
<
typename
T_luma>
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struct
rgb_to_luma
:
public
Function_v2v
< rgb_to_luma<T_luma> >
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{
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typedef
T_luma
result
;
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template
<
typename
T_rgb>
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T_luma
operator()
(
const
T_rgb&
rgb
)
const
;
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};
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# ifndef MLN_INCLUDE_ONLY
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template
<
typename
T_luma>
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template
<
typename
T_rgb>
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inline
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T_luma
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rgb_to_luma<T_luma>::operator()
(
const
T_rgb&
rgb
)
const
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{
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float
luma = 0.299 * rgb.red() + 0.587 * rgb.green() + 0.114 * rgb.blue();
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return
unsigned
(luma + 0.49999);
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}
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# endif // !MLN_INCLUDE_ONLY
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}
// end of namespace fun::v2v
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}
// end of namespace fun
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}
// end of namespace mln
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#endif // ! MLN_FUN_V2V_RGB_TO_LUMA_HH
mln
fun
v2v
rgb_to_luma.hh
Copyright (C) 2012 EPITA Research and Development Laboratory (LRDE)