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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 elxOpenCLResampler_h
#define elxOpenCLResampler_h
#include "elxIncludes.h" // include first to avoid MSVS warning
#include "elxOpenCLSupportedImageTypes.h"
#include "itkGPUResampleImageFilter.h"
#include "itkGPUAdvancedCombinationTransformCopier.h"
#include "itkGPUInterpolatorCopier.h"
namespace elastix
{
/**
* \class OpenCLResampler
* \brief A resampler based on the itk::GPUResampleImageFilter.
* The parameters used in this class are:
* \parameter Resampler: Select this resampler as follows:\n
* <tt>(Resampler "OpenCLResampler")</tt>
* \parameter Resampler: Enable the OpenCL resampler as follows:\n
* <tt>(OpenCLResamplerUseOpenCL "true")</tt>
*
* \author Denis P. Shamonin and Marius Staring. Division of Image Processing,
* Department of Radiology, Leiden, The Netherlands
*
* \note This work was funded by the Netherlands Organisation for
* Scientific Research (NWO NRG-2010.02 and NWO 639.021.124).
*
* \ingroup Resamplers
*/
template <class TElastix>
class OpenCLResampler
: public itk::ResampleImageFilter<typename ResamplerBase<TElastix>::InputImageType,
typename ResamplerBase<TElastix>::OutputImageType,
typename ResamplerBase<TElastix>::CoordRepType>
, public ResamplerBase<TElastix>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(OpenCLResampler);
/** Standard ITK-stuff. */
using Self = OpenCLResampler;
using Superclass1 = itk::ResampleImageFilter<typename ResamplerBase<TElastix>::InputImageType,
typename ResamplerBase<TElastix>::OutputImageType,
typename ResamplerBase<TElastix>::CoordRepType>;
using Superclass2 = ResamplerBase<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(OpenCLResampler, ResampleImageFilter);
/** Name of this class.
* Use this name in the parameter file to select this specific resampler. \n
* example: <tt>(Resampler "OpenCLResampler")</tt>\n
*/
elxClassNameMacro("OpenCLResampler");
/** Typedefs inherited from the superclass. */
using typename Superclass1::InterpolatorType;
using typename Superclass1::TransformType;
using typename Superclass1::InputImageType;
using InputImagePixelType = typename InputImageType::PixelType;
using typename Superclass1::OutputImageType;
using OutputImagePixelType = typename OutputImageType::PixelType;
using OutputImageRegionType = typename OutputImageType::RegionType;
/** GPU Typedefs for GPU image and GPU resampler. */
using GPUInputImageType = itk::GPUImage<InputImagePixelType, InputImageType::ImageDimension>;
using GPUInputImagePointer = typename GPUInputImageType::Pointer;
using GPUOutputImageType = itk::GPUImage<OutputImagePixelType, OutputImageType::ImageDimension>;
using GPUInterpolatorPrecisionType = float;
using GPUResamplerType =
itk::GPUResampleImageFilter<GPUInputImageType, GPUOutputImageType, GPUInterpolatorPrecisionType>;
using GPUResamplerPointer = typename GPUResamplerType::Pointer;
using typename Superclass2::ParameterMapType;
/** Set the transform. */
void
SetTransform(const TransformType * _arg) override;
/** Set the interpolator. */
void
SetInterpolator(InterpolatorType * _arg) override;
/** Do some things before registration. */
void
BeforeRegistration() override;
/** Function to read parameters from a file. */
void
ReadFromFile() override;
protected:
/** The constructor. */
OpenCLResampler();
/** The destructor. */
~OpenCLResampler() override = default;
/** This method performs all configuration for GPU resampler. */
void
BeforeGenerateData();
/** Executes GPU resampler. */
void
GenerateData() override;
/** Transform copier */
using InterpolatorPrecisionType = typename ResamplerBase<TElastix>::CoordRepType;
using AdvancedCombinationTransformType =
typename itk::AdvancedCombinationTransform<InterpolatorPrecisionType, OutputImageType::ImageDimension>;
using TransformCopierType = typename itk::GPUAdvancedCombinationTransformCopier<OpenCLImageTypes,
OpenCLImageDimentions,
AdvancedCombinationTransformType,
float>;
using TransformCopierPointer = typename TransformCopierType::Pointer;
using GPUTransformPointer = typename TransformCopierType::GPUComboTransformPointer;
/** Interpolator copier */
using InterpolatorInputImageType = typename InterpolatorType::InputImageType;
using InterpolatorCoordRepType = typename InterpolatorType::CoordRepType;
using InterpolateImageFunctionType =
itk::InterpolateImageFunction<InterpolatorInputImageType, InterpolatorCoordRepType>;
using InterpolateCopierType =
typename itk::GPUInterpolatorCopier<OpenCLImageTypes, OpenCLImageDimentions, InterpolateImageFunctionType, float>;
using InterpolateCopierPointer = typename InterpolateCopierType::Pointer;
using GPUExplicitInterpolatorPointer = typename InterpolateCopierType::GPUExplicitInterpolatorPointer;
private:
elxOverrideGetSelfMacro;
/** Creates a map of the parameters specific for this (derived) resampler type. */
ParameterMapType
CreateDerivedTransformParameterMap() const override;
/** Helper method to report switching to CPU mode. */
void
SwitchingToCPUAndReport(const bool configError);
/** Helper method to report to elastix log. */
void
ReportToLog();
TransformCopierPointer m_TransformCopier;
InterpolateCopierPointer m_InterpolatorCopier;
GPUResamplerPointer m_GPUResampler;
bool m_GPUResamplerReady;
bool m_GPUResamplerCreated;
bool m_ContextCreated;
bool m_UseOpenCL;
};
// end class OpenCLResampler
} // end namespace elastix
#ifndef ITK_MANUAL_INSTANTIATION
# include "elxOpenCLResampler.hxx"
#endif
#endif // end #ifndef elxOpenCLResampler_h
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