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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef otbMeanDifference_h
#define otbMeanDifference_h
namespace otb
{
namespace Functor
{
template<class TInput1, class TInput2, class TOutput>
class MeanDifference
{
public:
MeanDifference() {}
virtual ~MeanDifference() {}
inline TOutput operator ()(const TInput1& itA,
const TInput2& itB)
{
TOutput meanA = 0.0;
TOutput meanB = 0.0;
for (unsigned long pos = 0; pos < itA.Size(); ++pos)
{
meanA += static_cast<TOutput>(itA.GetPixel(pos));
meanB += static_cast<TOutput>(itB.GetPixel(pos));
}
return static_cast<TOutput>((meanA - meanB) / itA.Size());
}
};
}
}
#endif
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