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/*
-----------------------------------------------------------------------
Copyright: 2010-2021, imec Vision Lab, University of Antwerp
2014-2021, CWI, Amsterdam
Contact: astra@astra-toolbox.com
Website: http://www.astra-toolbox.com/
This file is part of the ASTRA Toolbox.
The ASTRA Toolbox 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 ASTRA Toolbox 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 ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
-----------------------------------------------------------------------
*/
#ifndef _INC_ASTRA_CUDABACKPROJECTIONALGORITHM3D
#define _INC_ASTRA_CUDABACKPROJECTIONALGORITHM3D
#include "Globals.h"
#include "Config.h"
#include "Algorithm.h"
#include "Float32ProjectionData3DMemory.h"
#include "Float32VolumeData3DMemory.h"
#include "ReconstructionAlgorithm3D.h"
#ifdef ASTRA_CUDA
namespace astra {
class _AstraExport CCudaBackProjectionAlgorithm3D : public CReconstructionAlgorithm3D {
protected:
/** Check the values of this object. If everything is ok, the object can be set to the initialized state.
* The following statements are then guaranteed to hold:
* - no NULL pointers
* - all sub-objects are initialized properly
* - the projector is compatible with both data objects
*/
virtual bool _check();
public:
// type of the algorithm, needed to register with CAlgorithmFactory
static std::string type;
/** Default constructor, does not initialize the object.
*/
CCudaBackProjectionAlgorithm3D();
/** Constructor with initialization.
*
* @param _pProjector Projector Object.
* @param _pProjectionData ProjectionData3D object containing the projection data.
* @param _pReconstruction VolumeData3D object for storing the reconstructed volume.
*/
CCudaBackProjectionAlgorithm3D(CProjector3D* _pProjector,
CFloat32ProjectionData3D* _pProjectionData,
CFloat32VolumeData3D* _pReconstruction);
/** Copy constructor.
*/
CCudaBackProjectionAlgorithm3D(const CCudaBackProjectionAlgorithm3D&);
/** Destructor.
*/
virtual ~CCudaBackProjectionAlgorithm3D();
/** Clear this class.
*/
/* virtual void clear();*/
/** Initialize the algorithm with a config object.
*
* @param _cfg Configuration Object
* @return initialization successful?
*/
virtual bool initialize(const Config& _cfg);
/** Initialize class.
*
* @param _pProjector Projector Object.
* @param _pProjectionData ProjectionData3D object containing the projection data.
* @param _pReconstruction VolumeData3D object for storing the reconstructed volume.
* @return initialization successful?
*/
bool initialize(CProjector3D* _pProjector,
CFloat32ProjectionData3D* _pSinogram,
CFloat32VolumeData3D* _pReconstruction);
/** Get all information parameters
*
* @return map with all boost::any object
*/
virtual std::map<std::string,boost::any> getInformation();
/** Get a single piece of information represented as a boost::any
*
* @param _sIdentifier identifier string to specify which piece of information you want
* @return boost::any object
*/
virtual boost::any getInformation(std::string _sIdentifier);
/** Perform a number of iterations.
*
* @param _iNrIterations amount of iterations to perform.
*/
virtual void run(int _iNrIterations = 0);
/** Get a description of the class.
*
* @return description string
*/
virtual std::string description() const;
/**
* Sets the index of the used GPU index: first GPU has index 0
*
* @param _iGPUIndex New GPU index.
*/
void setGPUIndex(int _iGPUIndex) { m_iGPUIndex = _iGPUIndex; }
protected:
int m_iGPUIndex;
int m_iVoxelSuperSampling;
/** Option to compute the column weights on the fly, divide by
* them, and add the result to the current volume. This is both
* more expensive and more GPU memory intensive than the regular
* BP, but allows saving system RAM.
*/
bool m_bSIRTWeighting;
void initializeFromProjector();
};
// inline functions
inline std::string CCudaBackProjectionAlgorithm3D::description() const { return CCudaBackProjectionAlgorithm3D::type; };
} // end namespace
#endif
#endif
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