/usr/include/ITK-4.5/itkTimeVaryingVelocityFieldTransform.h is in libinsighttoolkit4-dev 4.5.0-3.
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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 __itkTimeVaryingVelocityFieldTransform_h
#define __itkTimeVaryingVelocityFieldTransform_h
#include "itkVelocityFieldTransform.h"
namespace itk
{
/** \class TimeVaryingVelocityFieldTransform
* \brief Transform objects based on integration of a time-varying velocity
* field.
*
* Diffeomorphisms are topology-preserving mappings that are useful for
* describing biologically plausible deformations. Mathematically, a
* diffeomorphism, \f$\phi\f$, is generated from a time-varying velocity field, v, as
* described by the first-order differential equation:
*
* \f[
* v(\phi(x,t), t) = \frac{d\phi(x, t)}{dt}, \phi(x, 0) = x
* \f]
*
* In this class, the input is the time-varying velocity field. The output
* diffeomorphism is produced using fourth order Runge-Kutta.
*
* \warning The output deformation field needs to have dimensionality of 1
* less than the input time-varying velocity field. It is assumed that the
* last dimension of the time-varying velocity field corresponds to Time,
* and the other dimensions represent Space.
*
* \author Nick Tustison
* \author Brian Avants
*
* \ingroup Transforms
* \ingroup ITKDisplacementField
*/
template<typename TScalar, unsigned int NDimensions>
class TimeVaryingVelocityFieldTransform :
public VelocityFieldTransform<TScalar, NDimensions>
{
public:
/** Standard class typedefs. */
typedef TimeVaryingVelocityFieldTransform Self;
typedef VelocityFieldTransform<TScalar, NDimensions> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro( TimeVaryingVelocityFieldTransform, VelocityFieldTransform );
/** New macro for creation of through a Smart Pointer */
itkNewMacro( Self );
/** InverseTransform type. */
typedef typename Superclass::InverseTransformBasePointer InverseTransformBasePointer;
/** Interpolator types.*/
typedef typename Superclass::InterpolatorType InterpolatorType;
typedef typename Superclass::VelocityFieldInterpolatorType VelocityFieldIntegratorType;
/** Field types. */
typedef typename Superclass::DisplacementFieldType DisplacementFieldType;
typedef typename Superclass::VelocityFieldType VelocityFieldType;
typedef VelocityFieldType TimeVaryingVelocityFieldType;
typedef typename VelocityFieldType::Pointer TimeVaryingVelocityFieldPointer;
/** Scalar type. */
typedef typename Superclass::ScalarType ScalarType;
/** Type of the input parameters. */
typedef typename Superclass::ParametersType ParametersType;
typedef typename ParametersType::ValueType ParametersValueType;
typedef typename Superclass::NumberOfParametersType NumberOfParametersType;
/** Derivative type */
typedef typename Superclass::DerivativeType DerivativeType;
typedef typename Transform<TScalar,NDimensions,NDimensions>::Pointer TransformPointer;
/** Get the time-varying velocity field. */
#if ! defined ( ITK_FUTURE_LEGACY_REMOVE )
typename VelocityFieldType::Pointer GetTimeVaryingVelocityField()
{
return this->GetModifiableVelocityField();
}
#endif
typename VelocityFieldType::Pointer GetModifiableTimeVaryingVelocityField()
{
return this->GetModifiableVelocityField();
}
typename VelocityFieldType::ConstPointer GetTimeVaryingVelocityField() const
{
return this->GetVelocityField();
}
/** Set the time-varying velocity field. */
virtual void SetTimeVaryingVelocityField( VelocityFieldType * field )
{
this->SetVelocityField( field );
}
/** Trigger the computation of the displacement field by integrating
* the time-varying velocity field. */
virtual void IntegrateVelocityField();
protected:
TimeVaryingVelocityFieldTransform();
virtual ~TimeVaryingVelocityFieldTransform();
private:
TimeVaryingVelocityFieldTransform( const Self& ); //purposely not implemented
void operator=( const Self& ); //purposely not implemented
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkTimeVaryingVelocityFieldTransform.hxx"
#endif
#endif // __itkTimeVaryingVelocityFieldTransform_h
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