/usr/include/OTB-6.4/otbNDVIDataNodeFeatureFunction.txx 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 otbNDVIDataNodeFeatureFunction_txx
#define otbNDVIDataNodeFeatureFunction_txx
#include "otbNDVIDataNodeFeatureFunction.h"
namespace otb
{
/**
* Constructor
*/
template <class TImage, class TCoordRep, class TPrecision>
NDVIDataNodeFeatureFunction<TImage, TCoordRep, TPrecision>
::NDVIDataNodeFeatureFunction()
{
m_NDVIThreshold = 0.3; //Advised for QuickBird images
this->SetREDChannelIndex(3); //for QuickBird images
this->SetNIRChannelIndex(4); //for QuickBird images
}
/**
* Standard "PrintSelf" method
*/
template <class TImage, class TCoordRep, class TPrecision>
void
NDVIDataNodeFeatureFunction<TImage, TCoordRep, TPrecision>
::PrintSelf(
std::ostream& os,
itk::Indent indent) const
{
Superclass::PrintSelf( os, indent );
os << indent << "NDVI Threshold: " << m_NDVIThreshold << std::endl;
os << indent << "RED Channel Index: " << this->GetREDChannelIndex() << std::endl;
os << indent << "NIR Channel Index: " << this->GetNIRChannelIndex() << std::endl;
}
template <class TImage, class TCoordRep, class TPrecision>
typename NDVIDataNodeFeatureFunction<TImage, TCoordRep, TPrecision>
::OutputType
NDVIDataNodeFeatureFunction<TImage, TCoordRep, TPrecision>
::Evaluate( const DataNodeType& node ) const
{
if(!((this->GetREDChannelIndex() <= this->GetInputImage()->GetNumberOfComponentsPerPixel())
&& (this->GetNIRChannelIndex() <= this->GetInputImage()->GetNumberOfComponentsPerPixel())
&& (this->GetREDChannelIndex() > 0)
&& (this->GetNIRChannelIndex() > 0)))
{
itkExceptionMacro(<< "Invalid RED or NIR Channel Index");
}
const typename ImageLineIteratorType::PathType* path;
switch (node.GetNodeType())
{
case FEATURE_POINT:
{
itkExceptionMacro(<< "This DataNode type is not handle yet");
break;
}
case FEATURE_LINE:
{
path = node.GetLine();
break;
}
case FEATURE_POLYGON:
{
path = node.GetPolygonExteriorRing();
break;
}
default:
{
itkExceptionMacro(<< "This DataNode type is not handle yet");
break;
}
}
ImageLineIteratorType lineIt(this->GetInputImage(), path);
lineIt.GoToBegin();
double nbValidPixel=0.;
double nbVisitedPixel=0.;
while(!lineIt.IsAtEnd())
{
if(this->IsInsideBuffer(lineIt.GetIndex()))
{
PixelType pixel = this->GetInputImage()->GetPixel(lineIt.GetIndex());
if(m_NDVIFunctor(pixel [this->GetREDChannelIndex() - 1],
pixel [this->GetNIRChannelIndex() - 1]) >= this->GetNDVIThreshold())
{
nbValidPixel += 1;
}
nbVisitedPixel += 1;
}
++lineIt;
}
OutputType output;
if(nbVisitedPixel == 0)
{
//std::cout << "nbValidPixel: " << nbValidPixel << "nbVisitedPixel" << nbVisitedPixel << std::endl;
//itkExceptionMacro(<< "The DataNode and the Support Image are disjointed");
output.push_back(static_cast<PrecisionType>(0.));
}
else
{
output.push_back(static_cast<PrecisionType>(nbValidPixel/nbVisitedPixel));
}
output.push_back(static_cast<PrecisionType>(nbValidPixel));
output.push_back(static_cast<PrecisionType>(nbVisitedPixel));
return output;
}
} // end namespace otb
#endif
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