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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 itkInvertDisplacementFieldImageFilter_h
#define itkInvertDisplacementFieldImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkVectorInterpolateImageFunction.h"
#include "itkVectorLinearInterpolateImageFunction.h"
#include "itkSimpleFastMutexLock.h"
namespace itk
{
/**
* \class InvertDisplacementFieldImageFilter
*
* \brief Iteratively estimate the inverse field of a displacement field.
*
* \author Nick Tustison
* \author Brian Avants
*
* \ingroup ITKDisplacementField
*/
template <typename TInputImage, typename TOutputImage = TInputImage>
class ITK_TEMPLATE_EXPORT InvertDisplacementFieldImageFilter
: public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
typedef InvertDisplacementFieldImageFilter Self;
typedef ImageToImageFilter<TInputImage, TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro( Self );
/** Extract dimension from input image. */
itkStaticConstMacro( ImageDimension, unsigned int, TInputImage::ImageDimension );
typedef TInputImage InputFieldType;
typedef TOutputImage OutputFieldType;
typedef InputFieldType DisplacementFieldType;
typedef OutputFieldType InverseDisplacementFieldType;
/** Image typedef support. */
typedef typename OutputFieldType::PixelType PixelType;
typedef typename OutputFieldType::PixelType VectorType;
typedef typename OutputFieldType::RegionType RegionType;
typedef typename OutputFieldType::IndexType IndexType;
typedef typename OutputFieldType::PointType PointType;
typedef typename OutputFieldType::SpacingType SpacingType;
typedef typename OutputFieldType::PointType OriginType;
typedef typename OutputFieldType::SizeType SizeType;
typedef typename OutputFieldType::DirectionType DirectionType;
/** Other typedef */
typedef typename VectorType::ComponentType RealType;
typedef Image<RealType, ImageDimension> RealImageType;
typedef VectorInterpolateImageFunction<InputFieldType, RealType> InterpolatorType;
typedef VectorLinearInterpolateImageFunction <InputFieldType, RealType>
DefaultInterpolatorType;
/** Get the interpolator. */
itkGetModifiableObjectMacro( Interpolator, InterpolatorType );
/** Set the deformation field */
void SetDisplacementField( const InputFieldType *field )
{
itkDebugMacro( "setting deformation field to " << field );
if ( field != this->GetInput( 0 ) )
{
this->SetInput( 0, field );
this->Modified();
if( ! this->m_Interpolator.IsNull() )
{
this->m_Interpolator->SetInputImage( field );
}
}
}
/**
* Get the deformation field.
*/
const InputFieldType* GetDisplacementField() const
{
return this->GetInput( 0 );
}
/** Set/get the initial estimate for the inverse field (optional). */
itkSetInputMacro( InverseFieldInitialEstimate, InverseDisplacementFieldType );
itkGetInputMacro( InverseFieldInitialEstimate, InverseDisplacementFieldType );
/* Set the interpolator. */
virtual void SetInterpolator( InterpolatorType* interpolator );
/* Set/Get the number of iterations */
itkSetMacro( MaximumNumberOfIterations, unsigned int );
itkGetConstMacro( MaximumNumberOfIterations, unsigned int );
/* Set/Get the mean stopping criterion */
itkSetMacro( MeanErrorToleranceThreshold, RealType );
itkGetConstMacro( MeanErrorToleranceThreshold, RealType );
/* Set/Get the max stopping criterion */
itkSetMacro( MaxErrorToleranceThreshold, RealType );
itkGetConstMacro( MaxErrorToleranceThreshold, RealType );
/* Get the max norm */
itkGetConstMacro( MaxErrorNorm, RealType );
/* Get the mean norm */
itkGetConstMacro( MeanErrorNorm, RealType );
/* Should we force the boundary to have zero displacement? */
itkSetMacro( EnforceBoundaryCondition, bool );
itkGetMacro( EnforceBoundaryCondition, bool );
protected:
/** Constructor */
InvertDisplacementFieldImageFilter();
/** Deconstructor */
virtual ~InvertDisplacementFieldImageFilter() ITK_OVERRIDE;
/** Standard print self function **/
void PrintSelf( std::ostream& os, Indent indent ) const ITK_OVERRIDE;
/** preprocessing function */
void GenerateData() ITK_OVERRIDE;
/** Multithreaded function which generates the output field. */
void ThreadedGenerateData( const RegionType &, ThreadIdType ) ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(InvertDisplacementFieldImageFilter);
/** The interpolator. */
typename InterpolatorType::Pointer m_Interpolator;
unsigned int m_MaximumNumberOfIterations;
RealType m_MaxErrorToleranceThreshold;
RealType m_MeanErrorToleranceThreshold;
// internal ivars necessary for multithreading basic operations
typename DisplacementFieldType::Pointer m_ComposedField;
typename RealImageType::Pointer m_ScaledNormImage;
RealType m_MaxErrorNorm;
RealType m_MeanErrorNorm;
RealType m_Epsilon;
SpacingType m_DisplacementFieldSpacing;
bool m_DoThreadedEstimateInverse;
bool m_EnforceBoundaryCondition;
SimpleFastMutexLock m_Mutex;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkInvertDisplacementFieldImageFilter.hxx"
#endif
#endif
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