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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkConstantPadImageFilter.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 __itkConstantPadImageFilter_h
#define __itkConstantPadImageFilter_h
#include "itkPadImageFilter.h"
namespace itk
{
/** \class ConstantPadImageFilter
* \brief Increase the image size by padding with a constant value.
*
* ConstantPadImageFilter changes the output image region. If the output
* image region is larger than the input image region, the extra pixels are
* filled in by a constant value. The output image region must be specified.
*
* This filter is implemented as a multithreaded filter. It provides a
* ThreadedGenerateData() method for its implementation.
*
* \ingroup GeometricTransforms
* \sa WrapPadImageFilter, MirrorPadImageFilter
*/
template <class TInputImage, class TOutputImage>
class ITK_EXPORT ConstantPadImageFilter:
public PadImageFilter<TInputImage,TOutputImage>
{
public:
/** Standard class typedefs. */
typedef ConstantPadImageFilter Self;
typedef PadImageFilter<TInputImage,TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(ConstantPadImageFilter, PadImageFilter);
/** Typedef to describe the output image region type. */
typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
typedef typename Superclass::InputImageRegionType InputImageRegionType;
/** Typedef to describe the type of pixel. */
typedef typename Superclass::OutputImagePixelType OutputImagePixelType;
typedef typename Superclass::InputImagePixelType InputImagePixelType;
/** Typedef to describe the output and input image index and size types. */
typedef typename Superclass::OutputImageIndexType OutputImageIndexType;
typedef typename Superclass::InputImageIndexType InputImageIndexType;
typedef typename Superclass::OutputImageSizeType OutputImageSizeType;
typedef typename Superclass::InputImageSizeType InputImageSizeType;
/** ImageDimension constants */
itkStaticConstMacro(ImageDimension, unsigned int,
TInputImage::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension);
/** Set/Get the pad value. Default is Zero. */
itkSetMacro(Constant, OutputImagePixelType);
itkGetConstMacro(Constant, OutputImagePixelType);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(OutputEqualityComparableCheck,
(Concept::EqualityComparable<OutputImagePixelType>));
itkConceptMacro(InputConvertibleToOutputCheck,
(Concept::Convertible<InputImagePixelType, OutputImagePixelType>));
itkConceptMacro(SameDimensionCheck,
(Concept::SameDimension<ImageDimension, OutputImageDimension>));
itkConceptMacro(OutputOStreamWritableCheck,
(Concept::OStreamWritable<OutputImagePixelType>));
/** End concept checking */
#endif
protected:
ConstantPadImageFilter();
~ConstantPadImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
/** PadImageFilter can be implemented as a multithreaded filter. Therefore,
* this implementation provides a ThreadedGenerateData() routine which
* is called for each processing thread. The output image data is allocated
* automatically by the superclass prior to calling ThreadedGenerateData().
* ThreadedGenerateData can only write to the portion of the output image
* specified by the parameter "outputRegionForThread"
*
* \sa ImageToImageFilter::ThreadedGenerateData(),
* ImageToImageFilter::GenerateData() */
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId );
/**
* Given an n dimensional list of output region breakpoints in indices
* and size (where the current region and maximum region for each dimension
* is encoded in regIndices and regLimit), choose the next output region.
*/
int GenerateNextRegion(long *regIndices, long *regLimit,
OutputImageIndexType *indices,
OutputImageSizeType *sizes,
OutputImageRegionType& outputRegion);
private:
ConstantPadImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
OutputImagePixelType m_Constant;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkConstantPadImageFilter.txx"
#endif
#endif
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