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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkPadImageFilter.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 __itkPadImageFilter_h
#define __itkPadImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkSize.h"
namespace itk
{
/** \class PadImageFilter
* \brief Increase the image size by padding. Superclass for filters that fill
* in extra pixels.
*
* PadImageFilter changes the image boundary of an image by padding each
* dimension with subclass defined algorithms. The number of pixels to pad
* for the upper and lower bounds of each dimension must be specified.
*
* This filter is implemented as a multithreaded filter. It provides a
* ThreadedGenerateData() method for its implementation.
*
* \ingroup GeometricTransforms
* \sa WrapPadImageFilter, MirrorPadImageFilter, ConstantPadImageFilter
*
*/
template <class TInputImage, class TOutputImage>
class ITK_EXPORT PadImageFilter:
public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
/** Standard class typedefs. */
typedef PadImageFilter Self;
typedef ImageToImageFilter<TInputImage,TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Typedef to describe the output and input image region types. */
typedef typename TOutputImage::RegionType OutputImageRegionType;
typedef typename TInputImage::RegionType InputImageRegionType;
/** Typedef to describe the type of pixel. */
typedef typename TOutputImage::PixelType OutputImagePixelType;
typedef typename TInputImage::PixelType InputImagePixelType;
/** Typedef to describe the output and input image index and size types. */
typedef typename TOutputImage::IndexType OutputImageIndexType;
typedef typename TInputImage::IndexType InputImageIndexType;
typedef typename TOutputImage::SizeType OutputImageSizeType;
typedef typename TInputImage::SizeType InputImageSizeType;
typedef typename TInputImage::SizeValueType SizeValueType;
/** Run-time type information (and related methods). */
itkTypeMacro(PadImageFilter, ImageToImageFilter);
/** ImageDimension enumeration. */
itkStaticConstMacro(ImageDimension, unsigned int,
TInputImage::ImageDimension );
/** Set/Get the output image padding. Default is no padding
* (same as input). */
itkSetVectorMacro(PadLowerBound, const SizeValueType, ImageDimension);
itkSetVectorMacro(PadUpperBound, const SizeValueType, ImageDimension);
itkGetVectorMacro(PadLowerBound, const SizeValueType, ImageDimension);
itkGetVectorMacro(PadUpperBound, const SizeValueType, ImageDimension);
void SetPadLowerBound(const InputImageSizeType & bound)
{
this->SetPadLowerBound( bound.m_Size );
}
void SetPadUpperBound(const InputImageSizeType & bound)
{
this->SetPadUpperBound( bound.m_Size );
}
void SetPadBound(const InputImageSizeType & bound)
{
this->SetPadLowerBound( bound );
this->SetPadUpperBound( bound );
}
/** PadImageFilter produces an image which is a different resolution
* than its input image. As such, PadImageFilter 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();
/** PadImageFilter needs a smaller input requested region than
* output requested region. As such, PadImageFilter needs to
* provide an implementation for GenerateInputRequestedRegion() in
* order to inform the pipeline execution model.
* \sa ProcessObject::GenerateInputRequestedRegion() */
virtual void GenerateInputRequestedRegion();
protected:
PadImageFilter();
~PadImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
private:
PadImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
SizeValueType m_PadLowerBound[ImageDimension];
SizeValueType m_PadUpperBound[ImageDimension];
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkPadImageFilter.txx"
#endif
#endif
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