Commit bdecb6be authored by Emmanuel Christophe's avatar Emmanuel Christophe
Browse files

ENH: add otbUnaryFunctorImageFilter which is able to change the number of channel with VectorImage

parent fe2df503
/*=========================================================================
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 __otbUnaryFunctorImageFilter_h
#define __otbUnaryFunctorImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
namespace otb
{
/**
* \class UnaryFunctorImage
* \brief Implements pixel-wise generic operation on one image.
*
* Add the capability to change the number of channel when operation on
* VectorImage compared to the itk::UnaryFunctorImageFilter
*
* The number of channel is provided by the functor: TFunction::OutputSize. If
* this number is lower or equal to zero, the behavior of the itk::UnaryFunctorImageFilter
* remains unchanged.
*
* \sa itk::UnaryFunctorImageFilter
*/
template <class TInputImage, class TOutputImage, class TFunction >
class ITK_EXPORT UnaryFunctorImageFilter : public itk::UnaryFunctorImageFilter<TInputImage,TOutputImage, TFunction>
{
public:
/** Standard class typedefs. */
typedef UnaryFunctorImageFilter Self;
typedef itk::UnaryFunctorImageFilter<TInputImage,TOutputImage, TFunction> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(UnaryFunctorImageFilter, itk::UnaryFunctorImageFilter);
protected:
UnaryFunctorImageFilter() {};
virtual ~UnaryFunctorImageFilter() {};
/** UnaryFunctorImageFilter can produce an image which has a different number of bands
* than its input image. As such, UnaryFunctorImageFilter
* needs to provide an implementation for
* GenerateOutputInformation() in order to inform the pipeline
* execution model. The original documentation of this method is
* below.
*
* \sa ProcessObject::GenerateOutputInformaton() */
virtual void GenerateOutputInformation()
{
Superclass::GenerateOutputInformation();
typename Superclass::OutputImagePointer outputPtr = this->GetOutput();
outputPtr->SetNumberOfComponentsPerPixel( // propagate vector length info
this->GetFunctor().GetOutputSize());
}
private:
UnaryFunctorImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace otb
#endif
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