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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 itkCheckerBoardImageFilter_h
#define itkCheckerBoardImageFilter_h
#include "itkImageToImageFilter.h"
namespace itk
{
/** \class CheckerBoardImageFilter
* \brief Combines two images in a checkerboard pattern.
*
* CheckerBoardImageFilter takes two input images that must have the same
* dimension, size, origin and spacing and produces an output image of the same
* size by combinining the pixels from the two input images in a checkerboard
* pattern. This filter is commonly used for visually comparing two images, in
* particular for evaluating the results of an image registration process.
*
* This filter is implemented as a multithreaded filter. It provides a
* ThreadedGenerateData() method for its implementation.
*
* \ingroup IntensityImageFilters MultiThreaded
* \ingroup ITKImageCompare
*
* \wiki
* \wikiexample{Inspection/CheckerBoardImageFilter,Combine two images by alternating blocks of a checkerboard pattern}
* \endwiki
*/
template< typename TImage >
class ITK_TEMPLATE_EXPORT CheckerBoardImageFilter:
public ImageToImageFilter< TImage, TImage >
{
public:
/** Standard class typedefs. */
typedef CheckerBoardImageFilter Self;
typedef ImageToImageFilter< TImage, TImage > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
typedef TImage InputImageType;
typedef TImage OutputImageType;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename OutputImageType::RegionType ImageRegionType;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(CheckerBoardImageFilter, ImageToImageFilter);
/** Number of dimensions. */
itkStaticConstMacro(ImageDimension, unsigned int,
TImage::ImageDimension);
/** Type to hold the number of checker boxes per dimension. */
typedef FixedArray< unsigned int,
TImage ::ImageDimension > PatternArrayType;
/** Set the first operand for checker board. */
void SetInput1(const TImage *image1);
/** Set the second operand for checker board. */
void SetInput2(const TImage *image2);
/** Set/Get the checker pattern array, i.e. the number of checker boxes
* per image dimension. */
itkSetMacro(CheckerPattern, PatternArrayType);
itkGetConstReferenceMacro(CheckerPattern, PatternArrayType);
protected:
CheckerBoardImageFilter();
~CheckerBoardImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
/** CheckerBoardImageFilter 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 ImageRegionType & outputRegionForThread,
ThreadIdType threadId) ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(CheckerBoardImageFilter);
PatternArrayType m_CheckerPattern;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkCheckerBoardImageFilter.hxx"
#endif
#endif
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