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/*
-----------------------------------------------------------------------
Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
2014-2015, CWI, Amsterdam
Contact: astra@uantwerpen.be
Website: http://sf.net/projects/astra-toolbox
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/>.
-----------------------------------------------------------------------
$Id$
*/
#ifdef ASTRA_CUDA
#include "astra/CudaSartAlgorithm.h"
#include "../cuda/2d/sart.h"
using namespace std;
namespace astra {
// type of the algorithm, needed to register with CAlgorithmFactory
std::string CCudaSartAlgorithm::type = "SART_CUDA";
//----------------------------------------------------------------------------------------
// Constructor
CCudaSartAlgorithm::CCudaSartAlgorithm()
{
m_bIsInitialized = false;
CCudaReconstructionAlgorithm2D::_clear();
}
//----------------------------------------------------------------------------------------
// Destructor
CCudaSartAlgorithm::~CCudaSartAlgorithm()
{
// The actual work is done by ~CCudaReconstructionAlgorithm2D
}
//---------------------------------------------------------------------------------------
// Initialize - Config
bool CCudaSartAlgorithm::initialize(const Config& _cfg)
{
ASTRA_ASSERT(_cfg.self);
ConfigStackCheck<CAlgorithm> CC("CudaSartAlgorithm", this, _cfg);
m_bIsInitialized = CCudaReconstructionAlgorithm2D::initialize(_cfg);
if (!m_bIsInitialized)
return false;
astraCUDA::SART *sart = new astraCUDA::SART();
m_pAlgo = sart;
m_bAlgoInit = false;
// projection order
int projectionCount = m_pSinogram->getGeometry()->getProjectionAngleCount();
int* projectionOrder = NULL;
string projOrder = _cfg.self.getOption("ProjectionOrder", "random");
CC.markOptionParsed("ProjectionOrder");
if (projOrder == "sequential") {
projectionOrder = new int[projectionCount];
for (int i = 0; i < projectionCount; i++) {
projectionOrder[i] = i;
}
sart->setProjectionOrder(projectionOrder, projectionCount);
delete[] projectionOrder;
} else if (projOrder == "random") {
projectionOrder = new int[projectionCount];
for (int i = 0; i < projectionCount; i++) {
projectionOrder[i] = i;
}
for (int i = 0; i < projectionCount-1; i++) {
int k = (rand() % (projectionCount - i));
int t = projectionOrder[i];
projectionOrder[i] = projectionOrder[i + k];
projectionOrder[i + k] = t;
}
sart->setProjectionOrder(projectionOrder, projectionCount);
delete[] projectionOrder;
} else if (projOrder == "custom") {
vector<float32> projOrderList = _cfg.self.getOptionNumericalArray("ProjectionOrderList");
projectionOrder = new int[projOrderList.size()];
for (int i = 0; i < projOrderList.size(); i++) {
projectionOrder[i] = static_cast<int>(projOrderList[i]);
}
sart->setProjectionOrder(projectionOrder, projectionCount);
delete[] projectionOrder;
CC.markOptionParsed("ProjectionOrderList");
}
return true;
}
//---------------------------------------------------------------------------------------
// Initialize - C++
bool CCudaSartAlgorithm::initialize(CProjector2D* _pProjector,
CFloat32ProjectionData2D* _pSinogram,
CFloat32VolumeData2D* _pReconstruction,
int _iGPUindex, int _iDetectorSuperSampling)
{
m_bIsInitialized = CCudaReconstructionAlgorithm2D::initialize(_pProjector, _pSinogram, _pReconstruction, _iGPUindex, _iDetectorSuperSampling, 1);
if (!m_bIsInitialized)
return false;
m_pAlgo = new astraCUDA::SART();
m_bAlgoInit = false;
return true;
}
} // namespace astra
#endif // ASTRA_CUDA
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