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/*
//
// Copyright 1997-2009 Torsten Rohlfing
//
// Copyright 2004-2010 SRI International
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit is free software: you can
// redistribute it and/or modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// The Computational Morphometry Toolkit is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with the Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#ifndef __cmtkEntropyMinimizationIntensityCorrectionFunctionalDevice_h_included_
#define __cmtkEntropyMinimizationIntensityCorrectionFunctionalDevice_h_included_
#include <cmtkconfig.h>
#include <Segmentation/cmtkEntropyMinimizationIntensityCorrectionFunctional.h>
#include "cmtkDeviceMemory.h"
#include "cmtkDeviceHistogram.h"
#include "cmtkDeviceUniformVolume.h"
namespace
cmtk
{
/** \addtogroup GPU */
//@{
/// Base class for GPU implementation entropy-minimzation MR bias correction functional using Device.
template<unsigned int NOrderAdd,unsigned int NOrderMul>
class EntropyMinimizationIntensityCorrectionFunctionalDevice
/// Inherit non-GPU base class.
: public EntropyMinimizationIntensityCorrectionFunctional<NOrderAdd,NOrderMul>
{
public:
/// This class type.
typedef EntropyMinimizationIntensityCorrectionFunctionalDevice<NOrderAdd,NOrderMul> Self;
/// Pointer to this class.
typedef SmartPointer<Self> SmartPtr;
/// Superclass type.
typedef EntropyMinimizationIntensityCorrectionFunctional<NOrderAdd,NOrderMul> Superclass;
/// Return type of the functional evaluation.
typedef typename Superclass::ReturnType ReturnType;
/// Virtual destructor.
virtual ~EntropyMinimizationIntensityCorrectionFunctionalDevice() {}
/// Set input image.
virtual void SetInputImage( UniformVolume::SmartConstPtr& inputImage );
/// Set foreground mask.
virtual void SetForegroundMask( const UniformVolume& foregroundMask );
/// GPU-based functional evaluation for given parameter vector.
virtual typename Self::ReturnType EvaluateAt( CoordinateVector& v )
{
this->SetParamVector( v );
this->UpdateOutputImageDevice();
return this->EvaluateDevice();
}
/** GPU-based implementation of gradient evaluation.
* This function uses UpdateOutputImageDevice to update the output image using
* the computation device.
*/
virtual typename Self::ReturnType EvaluateWithGradient( CoordinateVector& v, CoordinateVector& g, const Types::Coordinate step );
protected:
/// Number of image pixels.
size_t m_NumberOfPixels;
/// Input image in device memory.
DeviceUniformVolume::SmartPtr m_InputImageDevice;
/// Binary foreground mask in device memory.
DeviceMemory<int>::SmartPtr m_ForegroundMaskDevice;
/// Output image data.
DeviceMemory<float>::SmartPtr m_OutputDataDevice;
/// Image histogram on device.
DeviceHistogram::SmartPtr m_HistogramDevice;
/// Update output image on device.
void UpdateOutputImageDevice();
/// Evaluate corrected image entropy on device.
typename Self::ReturnType EvaluateDevice();
};
/// Create functional templated over polynomial degrees.
template<unsigned int NDegreeMul>
EntropyMinimizationIntensityCorrectionFunctionalBase::SmartPtr
CreateEntropyMinimizationIntensityCorrectionFunctionalDevice
( const unsigned int polynomialDegreeAdd );
/// Create functional templated over polynomial degrees.
EntropyMinimizationIntensityCorrectionFunctionalBase::SmartPtr
CreateEntropyMinimizationIntensityCorrectionFunctionalDevice
( const unsigned int polynomialDegreeAdd, const unsigned int polynomialDegreeMul );
/** Create functional templated over polynomial degrees with initialization from old functional.
* This function creates a new functional and copies the polynomial coefficients from an existing
* functional of equal or lower polynomial degrees into the correct locations of the new functional's
* parameter vector. This is for incremental computation.
*/
EntropyMinimizationIntensityCorrectionFunctionalBase::SmartPtr
CreateEntropyMinimizationIntensityCorrectionFunctionalDevice
( const unsigned int polynomialDegreeAdd, const unsigned int polynomialDegreeMul,
EntropyMinimizationIntensityCorrectionFunctionalBase::SmartPtr oldFunctional );
//@}
} // namespace cmtk
#include "cmtkEntropyMinimizationIntensityCorrectionFunctionalDevice.txx"
#endif // #ifndef __cmtkEntropyMinimizationIntensityCorrectionFunctionalDevice_h_included_
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