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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkComposeRGBAImageFilter.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm 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 __itkComposeRGBAImageFilter_h
#define __itkComposeRGBAImageFilter_h
#include "itkNaryFunctorImageFilter.h"
#include "itkRGBAPixel.h"
#include "itkNumericTraitsRGBAPixel.h"
namespace itk
{
namespace Functor {
template< class TInput >
class ComposeRGBA
{
public:
typedef RGBAPixel<TInput> OutputType;
ComposeRGBA() {}
~ComposeRGBA() {}
bool operator!=( const ComposeRGBA & ) const
{
return false;
}
bool operator==( const ComposeRGBA & other ) const
{
return !(*this != other);
}
inline OutputType operator()( const std::vector< TInput > & in ) const
{
OutputType pixel;
pixel.Set( in[0], in[1], in[2], in[3] );
return pixel;
}
};
}
/** \class ComposeRGBAImageFilter
* \brief Implements pixel-wise composition of an RGBA pixel from four scalar images.
*
* This filter receives four scalar images as input. Each image containing
* one of the RGBA components of a color image. The filter produces as output an
* RGBA image in which the four components have been unified. The Component
* type is preserved from the PixelType of the input images.
*
* \author Dan Mueller, Queensland University of Technology, Brisbane, Australia
*
* This implementation was taken from the Insight Journal paper:
* http://hdl.handle.net/1926/153
*
* \ingroup IntensityImageFilters
*/
template <typename TInputImage,
typename TOutputImage=
Image< RGBAPixel< ITK_TYPENAME TInputImage::PixelType >,
::itk::GetImageDimension<TInputImage>::ImageDimension > >
class ITK_EXPORT ComposeRGBAImageFilter :
public
NaryFunctorImageFilter<TInputImage,TOutputImage,
Functor::ComposeRGBA< ITK_TYPENAME TInputImage::PixelType > >
{
public:
/** Standard class typedefs. */
typedef ComposeRGBAImageFilter Self;
typedef NaryFunctorImageFilter<TInputImage,TOutputImage,
Functor::ComposeRGBA<ITK_TYPENAME TInputImage::PixelType > > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
typedef typename Superclass::OutputImageType OutputImageType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(ComposeRGBAImageFilter, NaryFunctorImageFilter);
protected:
ComposeRGBAImageFilter() {}
virtual ~ComposeRGBAImageFilter() {}
private:
ComposeRGBAImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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