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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 itkShiftScaleImageFilter_h
#define itkShiftScaleImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkArray.h"
namespace itk
{
/** \class ShiftScaleImageFilter
* \brief Shift and scale the pixels in an image.
*
* ShiftScaleImageFilter shifts the input pixel by Shift (default 0.0)
* and then scales the pixel by Scale (default 1.0). All computattions
* are performed in the precision of the input pixel's RealType. Before
* assigning the computed value to the output pixel, the value is clamped
* at the NonpositiveMin and max of the pixel type.
* \ingroup IntensityImageFilters
*
* \ingroup ITKImageIntensity
*/
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_EXPORT ShiftScaleImageFilter:
public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard class typedefs. */
typedef ShiftScaleImageFilter 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 TInputImage::RegionType InputImageRegionType;
typedef typename TOutputImage::RegionType OutputImageRegionType;
/** Typedef to describe the pointer to the input/output. */
typedef typename TInputImage::Pointer InputImagePointer;
typedef typename TOutputImage::Pointer OutputImagePointer;
/** Typedef to describe the type of pixel. */
typedef typename TInputImage::PixelType InputImagePixelType;
typedef typename TOutputImage::PixelType OutputImagePixelType;
/** Typedef to describe the output and input image index and size types. */
typedef typename TInputImage::IndexType InputImageIndexType;
typedef typename TInputImage::SizeType InputImageSizeType;
typedef typename TInputImage::OffsetType InputImageOffsetType;
typedef typename TOutputImage::IndexType OutputImageIndexType;
typedef typename TOutputImage::SizeType OutputImageSizeType;
typedef typename TOutputImage::OffsetType OutputImageOffsetType;
/** Type to use form computations. */
typedef typename NumericTraits< OutputImagePixelType >::RealType RealType;
/** Image related typedefs. */
itkStaticConstMacro(ImageDimension, unsigned int,
TInputImage::ImageDimension);
/** Run-time type information (and related methods). */
itkTypeMacro(ShiftScaleImageFilter, ImageToImageFilter);
/** Set/Get the amount to Shift each Pixel. The shift is followed by a Scale.
*/
itkSetMacro(Shift, RealType);
itkGetConstMacro(Shift, RealType);
/** Set/Get the amount to Scale each Pixel. The Scale is applied after the
Shift. */
itkSetMacro(Scale, RealType);
itkGetConstMacro(Scale, RealType);
/** Get the number of pixels that underflowed and overflowed. */
itkGetConstMacro(UnderflowCount, long);
itkGetConstMacro(OverflowCount, long);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( OutputHasNumericTraitsCheck,
( Concept::HasNumericTraits< OutputImagePixelType > ) );
itkConceptMacro( InputPlusRealTypeCheck,
( Concept::AdditiveOperators< InputImagePixelType, RealType, RealType > ) );
itkConceptMacro( RealTypeMultiplyOperatorCheck,
( Concept::MultiplyOperator< RealType > ) );
// End concept checking
#endif
protected:
ShiftScaleImageFilter();
~ShiftScaleImageFilter() ITK_OVERRIDE;
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
/** Initialize some accumulators before the threads run. */
void BeforeThreadedGenerateData() ITK_OVERRIDE;
/** Tally accumulated in threads. */
void AfterThreadedGenerateData() ITK_OVERRIDE;
/** Multi-thread version GenerateData. */
void ThreadedGenerateData(const OutputImageRegionType &
outputRegionForThread,
ThreadIdType threadId) ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(ShiftScaleImageFilter);
RealType m_Shift;
RealType m_Scale;
long m_UnderflowCount;
long m_OverflowCount;
Array< long > m_ThreadUnderflow;
Array< long > m_ThreadOverflow;
const TInputImage *m_InputImage;
TOutputImage *m_OutputImage;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkShiftScaleImageFilter.hxx"
#endif
#endif
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