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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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.txt
*
* 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 itkCropImageFilter_h
#define itkCropImageFilter_h
#include "itkExtractImageFilter.h"
namespace itk
{
/** \class CropImageFilter
* \brief Decrease the image size by cropping the image by an itk::Size at
* both the upper and lower bounds of the largest possible region.
*
* CropImageFilter changes the image boundary of an image by removing
* pixels outside the target region. The target region is not specified in
* advance, but calculated in BeforeThreadedGenerateData().
*
* This filter uses ExtractImageFilter to perform the cropping.
*
* \ingroup GeometricTransform
* \ingroup ITKImageGrid
*
* \wiki
* \wikiexample{ImageProcessing/CropImageFilter,Crop an image by specifying the region to throw away}
* \endwiki
*/
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_EXPORT CropImageFilter:
public ExtractImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard class typedefs. */
typedef CropImageFilter Self;
typedef ExtractImageFilter< 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(CropImageFilter, ExtractImageFilter);
/** Typedef to describe the output and input image region types. */
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;
typedef InputImageSizeType SizeType;
/** ImageDimension constants. */
itkStaticConstMacro(InputImageDimension, unsigned int,
Superclass::InputImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
Superclass::OutputImageDimension);
/** Set/Get the cropping sizes for the upper and lower boundaries. */
itkSetMacro(UpperBoundaryCropSize, SizeType);
itkGetConstMacro(UpperBoundaryCropSize, SizeType);
itkSetMacro(LowerBoundaryCropSize, SizeType);
itkGetConstMacro(LowerBoundaryCropSize, SizeType);
void SetBoundaryCropSize(const SizeType & s)
{
this->SetUpperBoundaryCropSize(s);
this->SetLowerBoundaryCropSize(s);
}
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( InputConvertibleToOutputCheck,
( Concept::Convertible< InputImagePixelType, OutputImagePixelType > ) );
itkConceptMacro( SameDimensionCheck,
( Concept::SameDimension< InputImageDimension, OutputImageDimension > ) );
// End concept checking
#endif
protected:
CropImageFilter()
{
this->SetDirectionCollapseToSubmatrix();
m_UpperBoundaryCropSize.Fill(0);
m_LowerBoundaryCropSize.Fill(0);
}
~CropImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
void GenerateOutputInformation() ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(CropImageFilter);
SizeType m_UpperBoundaryCropSize;
SizeType m_LowerBoundaryCropSize;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkCropImageFilter.hxx"
#endif
#endif
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