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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_FORWARDPROJECTIONALGORITHM
#define _INC_ASTRA_FORWARDPROJECTIONALGORITHM
#include "Algorithm.h"
#include "Globals.h"
#include "Projector2D.h"
#include "Float32ProjectionData2D.h"
#include "Float32VolumeData2D.h"
#include "DataProjector.h"
namespace astra {
/**
* \brief
* This class contains the implementation of an algorithm that creates a forward projection
* of a volume object and stores it into a sinogram.
*
* \par XML Configuration
* \astra_xml_item{ProjectorId, integer, Identifier of a projector as it is stored in the ProjectorManager.}
* \astra_xml_item{VolumeDataId, integer, Identifier of the volume data object as it is stored in the DataManager.}
* \astra_xml_item{ProjectionDataId, integer, Identifier of the resulting projection data object as it is stored in the DataManager.}
* \astra_xml_item_option{VolumeMaskId, integer, not used, Identifier of a volume data object that acts as a volume mask. 0 = don't use this pixel. 1 = use this pixel. }
* \astra_xml_item_option{SinogramMaskId, integer, not used, Identifier of a projection data object that acts as a projection mask. 0 = don't use this ray. 1 = use this ray.}
*
* \par MATLAB example
* \astra_code{
* cfg = astra_struct('FP');\n
* cfg.ProjectorId = proj_id;\n
* cfg.VolumeDataId = vol_id;\n
* cfg.ProjectionDataId = sino_id;\n
* alg_id = astra_mex_algorithm('create'\, cfg);\n
* astra_mex_algorithm('run'\, alg_id);\n
* astra_mex_algorithm('delete'\, alg_id);\n
* }
*
*/
class _AstraExport CForwardProjectionAlgorithm : public CAlgorithm {
protected:
/** Init stuff
*/
virtual void _init();
/** Initial clearing. Only to be used by constructors.
*/
virtual void _clear();
/** 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:
* - valid projector
* - valid data objects
*/
virtual bool _check();
//< Projector object.
CProjector2D* m_pProjector;
//< ProjectionData2D object containing the sinogram.
CFloat32ProjectionData2D* m_pSinogram;
//< VolumeData2D object containing the phantom.
CFloat32VolumeData2D* m_pVolume;
// data projector
astra::CDataProjectorInterface* m_pForwardProjector;
// ray or voxel-driven projector code?
bool m_bUseVoxelProjector;
//< Dataobject containing fixed volume mask (0 = don't project)
CFloat32VolumeData2D* m_pVolumeMask;
//< Use the fixed reconstruction mask?
bool m_bUseVolumeMask;
//< Dataobject containing fixed reconstruction mask (0 = don't project)
CFloat32ProjectionData2D* m_pSinogramMask;
//< Use the fixed reconstruction mask?
bool m_bUseSinogramMask;
public:
// type of the algorithm, needed to register with CAlgorithmFactory
static std::string type;
/** Default constructor, containing no code.
*/
CForwardProjectionAlgorithm();
/** Initializing constructor.
*
* @param _pProjector Projector to use.
* @param _pVolume VolumeData2D object containing the phantom to compute sinogram from
* @param _pSinogram ProjectionData2D object to store sinogram data in.
*/
CForwardProjectionAlgorithm(CProjector2D* _pProjector,
CFloat32VolumeData2D* _pVolume,
CFloat32ProjectionData2D* _pSinogram);
/** Destructor.
*/
virtual ~CForwardProjectionAlgorithm();
/** Clear this class.
*/
virtual void clear();
/** Initialize class.
*
* @param _pProjector Projector to use.
* @param _pVolume VolumeData2D object containing the phantom to compute sinogram from
* @param _pSinogram ProjectionData2D object to store sinogram data in.
* @return success
*/
bool initialize(CProjector2D* _pProjector,
CFloat32VolumeData2D* _pVolume,
CFloat32ProjectionData2D* _pSinogram);
/** Initialize the algorithm with a config object.
*
* @param _cfg Configuration Object
* @return initialization successful?
*/
virtual bool initialize(const Config& _cfg);
/** 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);
/** Set a fixed reconstruction mask. A pixel will only be used in the reconstruction if the
* corresponding value in the mask is 1.
*
* @param _pMask Volume Data object containing fixed reconstruction mask
* @param _bEnable enable the use of this mask
*/
void setVolumeMask(CFloat32VolumeData2D* _pMask, bool _bEnable = true);
/** Set a fixed sinogram mask. A detector value will only be used in the reconstruction if the
* corresponding value in the mask is 1.
*
* @param _pMask Projection Data object containing fixed sinogram mask
* @param _bEnable enable the use of this mask
*/
void setSinogramMask(CFloat32ProjectionData2D* _pMask, bool _bEnable = true);
/** Get projector object
*
* @return projector
*/
CProjector2D* getProjector() const;
/** Get sinogram data object
*
* @return sinogram data object
*/
CFloat32ProjectionData2D* getSinogram() const;
/** Get volume data object
*
* @return volume data object
*/
CFloat32VolumeData2D* getVolume() const;
/** 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;
};
// inline functions
inline std::string CForwardProjectionAlgorithm::description() const { return CForwardProjectionAlgorithm::type; };
inline CProjector2D* CForwardProjectionAlgorithm::getProjector() const { return m_pProjector; }
inline CFloat32ProjectionData2D* CForwardProjectionAlgorithm::getSinogram() const { return m_pSinogram; }
inline CFloat32VolumeData2D* CForwardProjectionAlgorithm::getVolume() const { return m_pVolume; }
} // end namespace
#endif
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