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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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 elxNearestNeighborResampleInterpolator_h
#define elxNearestNeighborResampleInterpolator_h
#include "elxIncludes.h" // include first to avoid MSVS warning
#include "itkNearestNeighborInterpolateImageFunction.h"
namespace elastix
{
/**
* \class NearestNeighborResampleInterpolator
* \brief A nearest neighbor resample-interpolator.
*
* Compared to the BSplineResampleInterpolator and BSplineResampleInterpolatorFloat
* with SplineOrder 0 this class uses less (in fact, no) memory. You can select
* this resample interpolator if memory burden is an issue and nearest neighbor interpolation
* is sufficient.
*
* The parameters used in this class are:
* \parameter ResampleInterpolator: Select this resample interpolator as follows:\n
* <tt>(ResampleInterpolator "FinalNearestNeighborInterpolator")</tt>
*
* \ingroup ResampleInterpolators
*/
template <class TElastix>
class ITK_TEMPLATE_EXPORT NearestNeighborResampleInterpolator
: public itk::NearestNeighborInterpolateImageFunction<typename ResampleInterpolatorBase<TElastix>::InputImageType,
typename ResampleInterpolatorBase<TElastix>::CoordRepType>
, public ResampleInterpolatorBase<TElastix>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(NearestNeighborResampleInterpolator);
/** Standard ITK-stuff. */
using Self = NearestNeighborResampleInterpolator;
using Superclass1 =
itk::NearestNeighborInterpolateImageFunction<typename ResampleInterpolatorBase<TElastix>::InputImageType,
typename ResampleInterpolatorBase<TElastix>::CoordRepType>;
using Superclass2 = ResampleInterpolatorBase<TElastix>;
using Pointer = itk::SmartPointer<Self>;
using ConstPointer = itk::SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(NearestNeighborResampleInterpolator, NearestNeighborInterpolateImageFunction);
/** Name of this class.
* Use this name in the parameter file to select this specific resample interpolator. \n
* example: <tt>(ResampleInterpolator "FinalNearestNeighborInterpolator")</tt>\n
*/
elxClassNameMacro("FinalNearestNeighborInterpolator");
/** Dimension of the image. */
itkStaticConstMacro(ImageDimension, unsigned int, Superclass1::ImageDimension);
/** Typedef's inherited from the superclass. */
using typename Superclass1::OutputType;
using typename Superclass1::InputImageType;
using typename Superclass1::IndexType;
using typename Superclass1::ContinuousIndexType;
/** Typedef's from ResampleInterpolatorBase. */
using typename Superclass2::ElastixType;
using typename Superclass2::RegistrationType;
using ITKBaseType = typename Superclass2::ITKBaseType;
protected:
/** The constructor. */
NearestNeighborResampleInterpolator() = default;
/** The destructor. */
~NearestNeighborResampleInterpolator() override = default;
private:
elxOverrideGetSelfMacro;
};
} // end namespace elastix
#ifndef ITK_MANUAL_INSTANTIATION
# include "elxNearestNeighborResampleInterpolator.hxx"
#endif
#endif // end elxNearestNeighborResampleInterpolator_h
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