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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/>.
-----------------------------------------------------------------------
*/
#include "astra/BackProjectionAlgorithm.h"
#include "astra/AstraObjectManager.h"
#include "astra/DataProjectorPolicies.h"
using namespace std;
namespace astra {
#include "astra/Projector2DImpl.inl"
// type of the algorithm, needed to register with CAlgorithmFactory
std::string CBackProjectionAlgorithm::type = "BP";
//----------------------------------------------------------------------------------------
// Constructor
CBackProjectionAlgorithm::CBackProjectionAlgorithm()
{
_clear();
}
//---------------------------------------------------------------------------------------
// Initialize - C++
CBackProjectionAlgorithm::CBackProjectionAlgorithm(CProjector2D* _pProjector,
CFloat32ProjectionData2D* _pSinogram,
CFloat32VolumeData2D* _pReconstruction)
{
_clear();
initialize(_pProjector, _pSinogram, _pReconstruction);
}
//----------------------------------------------------------------------------------------
// Destructor
CBackProjectionAlgorithm::~CBackProjectionAlgorithm()
{
clear();
}
//---------------------------------------------------------------------------------------
// Clear - Constructors
void CBackProjectionAlgorithm::_clear()
{
CReconstructionAlgorithm2D::_clear();
m_bIsInitialized = false;
}
//---------------------------------------------------------------------------------------
// Clear - Public
void CBackProjectionAlgorithm::clear()
{
CReconstructionAlgorithm2D::_clear();
m_bIsInitialized = false;
}
//----------------------------------------------------------------------------------------
// Check
bool CBackProjectionAlgorithm::_check()
{
// check base class
ASTRA_CONFIG_CHECK(CReconstructionAlgorithm2D::_check(), "BP", "Error in ReconstructionAlgorithm2D initialization");
return true;
}
//---------------------------------------------------------------------------------------
// Initialize - Config
bool CBackProjectionAlgorithm::initialize(const Config& _cfg)
{
ASTRA_ASSERT(_cfg.self);
ConfigStackCheck<CAlgorithm> CC("BackProjectionAlgorithm", this, _cfg);
// if already initialized, clear first
if (m_bIsInitialized) {
clear();
}
// initialization of parent class
if (!CReconstructionAlgorithm2D::initialize(_cfg)) {
return false;
}
// init data objects and data projectors
_init();
// success
m_bIsInitialized = _check();
return m_bIsInitialized;
}
//---------------------------------------------------------------------------------------
// Initialize - C++
bool CBackProjectionAlgorithm::initialize(CProjector2D* _pProjector,
CFloat32ProjectionData2D* _pSinogram,
CFloat32VolumeData2D* _pReconstruction)
{
// if already initialized, clear first
if (m_bIsInitialized) {
clear();
}
// required classes
m_pProjector = _pProjector;
m_pSinogram = _pSinogram;
m_pReconstruction = _pReconstruction;
// init data objects and data projectors
_init();
// success
m_bIsInitialized = _check();
return m_bIsInitialized;
}
//---------------------------------------------------------------------------------------
// Initialize Data Projectors - private
void CBackProjectionAlgorithm::_init()
{
}
//---------------------------------------------------------------------------------------
// Information - All
map<string,boost::any> CBackProjectionAlgorithm::getInformation()
{
map<string, boost::any> res;
return mergeMap<string,boost::any>(CReconstructionAlgorithm2D::getInformation(), res);
};
//---------------------------------------------------------------------------------------
// Information - Specific
boost::any CBackProjectionAlgorithm::getInformation(std::string _sIdentifier)
{
return CAlgorithm::getInformation(_sIdentifier);
};
//----------------------------------------------------------------------------------------
// Iterate
void CBackProjectionAlgorithm::run(int _iNrIterations)
{
// check initialized
ASTRA_ASSERT(m_bIsInitialized);
CDataProjectorInterface* pBackProjector;
pBackProjector = dispatchDataProjector(
m_pProjector,
SinogramMaskPolicy(m_pSinogramMask), // sinogram mask
ReconstructionMaskPolicy(m_pReconstructionMask), // reconstruction mask
DefaultBPPolicy(m_pReconstruction, m_pSinogram), // backprojection
m_bUseSinogramMask, m_bUseReconstructionMask, true // options on/off
);
m_pReconstruction->setData(0.0f);
pBackProjector->project();
ASTRA_DELETE(pBackProjector);
}
//----------------------------------------------------------------------------------------
} // namespace astra
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