/usr/include/OTB-6.4/otbSarBrightnessFunctor.h is in libotb-dev 6.4.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef otbSarBrightnessFunctor_h
#define otbSarBrightnessFunctor_h
#include "otbMath.h"
#include "itkNumericTraits.h"
namespace otb
{
namespace Functor
{
/**
* \class SarBrightnessFunctor
* \brief Compute the brightness value.
* \f$ \beta^{0} = (scale * DN^{2} + offset) * OldGain / NewGain * RangeSpreadLoss \f$
*
*
* \ingroup OTBSARCalibration
*/
template<class TInput, class TOutput>
class ITK_EXPORT SarBrightnessFunctor
{
public:
typedef TInput InputType;
typedef TOutput OutputType;
typedef typename itk::NumericTraits<InputType>::AbsType RealType;
SarBrightnessFunctor()
{
m_Noise = 0.0;
m_Scale = 1.0;
m_AntennaPatternOldGain = 1.0;
m_AntennaPatternNewGain = 1.0;
m_RangeSpreadLoss = 1.0;
};
~SarBrightnessFunctor(){};
inline TOutput operator ()(const TInput& value) const
{
RealType digitalNumber = static_cast<RealType> (vcl_abs(value));
RealType beta;
beta = m_Scale * (digitalNumber * digitalNumber - m_Noise);
beta *= m_AntennaPatternOldGain;
beta /= m_AntennaPatternNewGain;
beta *= m_RangeSpreadLoss;
if(beta < 0.0)
{
beta = 0.0;
}
return static_cast<OutputType>(beta);
}
/** Set offset method */
void SetNoise(RealType value)
{
m_Noise = value;
}
/** Get offset method */
RealType GetNoise() const
{
return m_Noise;
}
/** Set scale method */
void SetScale(RealType value)
{
m_Scale = value;
}
/** Get scale method */
RealType GetScale() const
{
return m_Scale;
}
/** Set antennaPatternNewGain method */
void SetAntennaPatternNewGain(RealType value)
{
m_AntennaPatternNewGain = value;
}
/** Get antennaPatternNewGain method */
RealType GetAntennaPatternNewGain() const
{
return m_AntennaPatternNewGain;
}
/** Set antennaPatternOldGain method */
void SetAntennaPatternOldGain(RealType value)
{
m_AntennaPatternOldGain = value;
}
/** Get antennaPatternOldGain method */
RealType GetAntennaPatternOldGain() const
{
return m_AntennaPatternOldGain;
}
/** Set rangeSpreadLoss method */
void SetRangeSpreadLoss(RealType value)
{
m_RangeSpreadLoss = value;
}
/** Get scale method */
RealType GetRangeSpreadLoss() const
{
return m_RangeSpreadLoss;
}
private:
RealType m_Noise;
RealType m_Scale;
RealType m_AntennaPatternNewGain;
RealType m_AntennaPatternOldGain;
RealType m_RangeSpreadLoss;
};
}
}
#endif
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