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/*
* Copyright (C) 2005-2020 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 otbSurfaceReflectanceToReflectanceFilter_hxx
#define otbSurfaceReflectanceToReflectanceFilter_hxx
#include "otbSurfaceReflectanceToReflectanceFilter.h"
#include "otbOpticalImageMetadataInterfaceFactory.h"
namespace otb
{
/**
* Constructor
*/
template <class TInputImage, class TOutputImage>
SurfaceReflectanceToReflectanceFilter<TInputImage, TOutputImage>::SurfaceReflectanceToReflectanceFilter()
: m_IsSetAtmosphericRadiativeTerms(false), m_IsSetAtmoCorrectionParameters(false), m_IsSetAcquiCorrectionParameters(false), m_UseGenerateParameters(true)
{
m_AtmosphericRadiativeTerms = AtmosphericRadiativeTermsType::New();
m_AtmoCorrectionParameters = AtmoCorrectionParametersType::New();
m_AcquiCorrectionParameters = AcquiCorrectionParametersType::New();
}
template <class TInputImage, class TOutputImage>
void SurfaceReflectanceToReflectanceFilter<TInputImage, TOutputImage>::UpdateAtmosphericRadiativeTerms()
{
if (this->GetInput() == nullptr)
{
itkExceptionMacro(<< "Input must be set before updating the atmospheric radiative terms");
}
// Atmospheric parameters
if (!m_IsSetAtmoCorrectionParameters)
{
itkExceptionMacro(<< "Atmospheric correction parameters must be provided before updating the atmospheric radiative terms");
}
// Acquisition parameters
if (!m_IsSetAcquiCorrectionParameters) // Get info from image metadata interface
{
MetaDataDictionaryType dict = this->GetInput()->GetMetaDataDictionary();
OpticalImageMetadataInterface::Pointer imageMetadataInterface = OpticalImageMetadataInterfaceFactory::CreateIMI(dict);
m_AcquiCorrectionParameters = AcquiCorrectionParametersType::New();
m_AcquiCorrectionParameters->SetSolarZenithalAngle(90. - imageMetadataInterface->GetSunElevation());
m_AcquiCorrectionParameters->SetSolarAzimutalAngle(imageMetadataInterface->GetSunAzimuth());
m_AcquiCorrectionParameters->SetViewingZenithalAngle(90. - imageMetadataInterface->GetSatElevation());
m_AcquiCorrectionParameters->SetViewingAzimutalAngle(imageMetadataInterface->GetSatAzimuth());
m_AcquiCorrectionParameters->SetDay(imageMetadataInterface->GetDay());
m_AcquiCorrectionParameters->SetMonth(imageMetadataInterface->GetMonth());
if (imageMetadataInterface->GetSpectralSensitivity()->Capacity() > 0)
{
m_AcquiCorrectionParameters->SetWavelengthSpectralBand(imageMetadataInterface->GetSpectralSensitivity());
}
else
{
otbMsgDevMacro(<< "use dummy filter");
WavelengthSpectralBandVectorType spectralDummy;
spectralDummy->Clear();
for (unsigned int i = 0; i < this->GetInput()->GetNumberOfComponentsPerPixel(); ++i)
{
spectralDummy->PushBack(FilterFunctionValuesType::New());
}
m_AcquiCorrectionParameters->SetWavelengthSpectralBand(spectralDummy);
}
}
m_AtmosphericRadiativeTerms = CorrectionParametersToRadiativeTermsType::Compute(m_AtmoCorrectionParameters, m_AcquiCorrectionParameters);
}
template <class TInputImage, class TOutputImage>
void SurfaceReflectanceToReflectanceFilter<TInputImage, TOutputImage>::BeforeThreadedGenerateData()
{
Superclass::BeforeThreadedGenerateData();
if (m_UseGenerateParameters)
this->GenerateParameters();
}
template <class TInputImage, class TOutputImage>
void SurfaceReflectanceToReflectanceFilter<TInputImage, TOutputImage>::Modified() const
{
Superclass::Modified();
m_FunctorParametersHaveBeenComputed = false;
}
template <class TInputImage, class TOutputImage>
void SurfaceReflectanceToReflectanceFilter<TInputImage, TOutputImage>::UpdateFunctors()
{
// this->GetFunctor().clear();
// for (unsigned int i = 0; i<this->GetInput()->GetNumberOfComponentsPerPixel(); ++i)
for (unsigned int i = 0; i < m_AtmosphericRadiativeTerms->GetWavelengthSpectralBand().size(); ++i)
{
double coef;
double res;
coef = static_cast<double>(m_AtmosphericRadiativeTerms->GetTotalGaseousTransmission(i) * m_AtmosphericRadiativeTerms->GetDownwardTransmittance(i) *
m_AtmosphericRadiativeTerms->GetUpwardTransmittance(i));
// coef = 1. / coef;
// res = -m_AtmosphericRadiativeTerms->GetIntrinsicAtmosphericReflectance(i) * coef;
res = m_AtmosphericRadiativeTerms->GetIntrinsicAtmosphericReflectance(i);
FunctorType functor;
functor.SetCoefficient(coef);
functor.SetResidu(res);
functor.SetSphericalAlbedo(static_cast<double>(m_AtmosphericRadiativeTerms->GetSphericalAlbedo(i)));
this->GetFunctorVector().push_back(functor);
// this->SetFunctor(functor);
}
}
template <class TInputImage, class TOutputImage>
void SurfaceReflectanceToReflectanceFilter<TInputImage, TOutputImage>::GenerateParameters()
{
if (!m_IsSetAtmosphericRadiativeTerms)
{
this->UpdateAtmosphericRadiativeTerms();
m_IsSetAtmosphericRadiativeTerms = true;
}
if (!m_FunctorParametersHaveBeenComputed)
{
this->UpdateFunctors();
m_FunctorParametersHaveBeenComputed = true;
}
}
}
#endif
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