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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 elxGridSampler_h
#define elxGridSampler_h
#include "elxIncludes.h" // include first to avoid MSVS warning
#include "itkImageGridSampler.h"
namespace elastix
{
/**
* \class GridSampler
* \brief An interpolator based on the itk::ImageGridSampler.
*
* This image sampler samples voxels on a uniform grid.
* This sampler is in most cases not recommended.
*
* This sampler does not react on the
* NewSamplesEveryIteration parameter.
*
* The parameters used in this class are:
* \parameter ImageSampler: Select this image sampler as follows:\n
* <tt>(ImageSampler "Grid")</tt>
* \parameter SampleGridSpacing: Defines the sampling grid in case of a Grid ImageSampler.\n
* An integer downsampling factor must be specified for each dimension, for each resolution.\n
* example: <tt>(SampleGridSpacing 4 4 2 2)</tt>\n
* Default is 2 for each dimension for each resolution.
*
* \ingroup ImageSamplers
*/
template <class TElastix>
class ITK_TEMPLATE_EXPORT GridSampler
: public itk::ImageGridSampler<typename elx::ImageSamplerBase<TElastix>::InputImageType>
, public elx::ImageSamplerBase<TElastix>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(GridSampler);
/** Standard ITK-stuff. */
using Self = GridSampler;
using Superclass1 = itk::ImageGridSampler<typename elx::ImageSamplerBase<TElastix>::InputImageType>;
using Superclass2 = elx::ImageSamplerBase<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(GridSampler, itk::ImageGridSampler);
/** Name of this class.
* Use this name in the parameter file to select this specific interpolator. \n
* example: <tt>(ImageSampler "Grid")</tt>\n
*/
elxClassNameMacro("Grid");
/** Typedefs inherited from the superclass. */
using typename Superclass1::DataObjectPointer;
using typename Superclass1::OutputVectorContainerType;
using typename Superclass1::OutputVectorContainerPointer;
using typename Superclass1::InputImageType;
using typename Superclass1::InputImagePointer;
using typename Superclass1::InputImageConstPointer;
using typename Superclass1::InputImageRegionType;
using typename Superclass1::InputImagePixelType;
using typename Superclass1::ImageSampleType;
using typename Superclass1::ImageSampleContainerType;
using typename Superclass1::MaskType;
using typename Superclass1::InputImageIndexType;
using typename Superclass1::InputImagePointType;
using GridSpacingType = typename Superclass1::SampleGridSpacingType;
using typename Superclass1::SampleGridSpacingValueType;
/** The input image dimension. */
itkStaticConstMacro(InputImageDimension, unsigned int, Superclass1::InputImageDimension);
/** Typedefs inherited from Elastix. */
using typename Superclass2::ElastixType;
using typename Superclass2::RegistrationType;
using ITKBaseType = typename Superclass2::ITKBaseType;
/** Execute stuff before each resolution:
* \li Set the sampling grid size.
*/
void
BeforeEachResolution() override;
protected:
/** The constructor. */
GridSampler() = default;
/** The destructor. */
~GridSampler() override = default;
private:
elxOverrideGetSelfMacro;
};
} // end namespace elastix
#ifndef ITK_MANUAL_INSTANTIATION
# include "elxGridSampler.hxx"
#endif
#endif // end #ifndef elxGridSampler_h
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