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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/CudaFilteredBackProjectionAlgorithm.h>
#include <astra/FanFlatProjectionGeometry2D.h>
#include "astra/AstraObjectManager.h"
#include "astra/CudaProjector2D.h"
#include "astra/Filters.h"
#include "astra/cuda/2d/astra.h"
#include "astra/cuda/2d/fbp.h"
#include "astra/Logging.h"
using namespace std;
using namespace astra;
string CCudaFilteredBackProjectionAlgorithm::type = "FBP_CUDA";
CCudaFilteredBackProjectionAlgorithm::CCudaFilteredBackProjectionAlgorithm()
{
m_bIsInitialized = false;
CCudaReconstructionAlgorithm2D::_clear();
}
CCudaFilteredBackProjectionAlgorithm::~CCudaFilteredBackProjectionAlgorithm()
{
delete[] m_filterConfig.m_pfCustomFilter;
m_filterConfig.m_pfCustomFilter = NULL;
}
bool CCudaFilteredBackProjectionAlgorithm::initialize(const Config& _cfg)
{
ASTRA_ASSERT(_cfg.self);
ConfigStackCheck<CAlgorithm> CC("CudaFilteredBackProjectionAlgorithm", this, _cfg);
// if already initialized, clear first
if (m_bIsInitialized)
{
clear();
}
m_bIsInitialized = CCudaReconstructionAlgorithm2D::initialize(_cfg);
if (!m_bIsInitialized)
return false;
m_filterConfig = getFilterConfigForAlgorithm(_cfg, this);
// Fan beam short scan mode
if (m_pSinogram && dynamic_cast<CFanFlatProjectionGeometry2D*>(m_pSinogram->getGeometry())) {
m_bShortScan = (int)_cfg.self.getOptionBool("ShortScan", false);
CC.markOptionParsed("ShortScan");
}
initializeFromProjector();
m_pAlgo = new astraCUDA::FBP();
m_bAlgoInit = false;
return check();
}
bool CCudaFilteredBackProjectionAlgorithm::initialize(CFloat32ProjectionData2D * _pSinogram, CFloat32VolumeData2D * _pReconstruction, E_FBPFILTER _eFilter, const float * _pfFilter /* = NULL */, int _iFilterWidth /* = 0 */, int _iGPUIndex /* = 0 */, float _fFilterParameter /* = -1.0f */)
{
// if already initialized, clear first
if (m_bIsInitialized)
{
clear();
}
// required classes
m_pSinogram = _pSinogram;
m_pReconstruction = _pReconstruction;
m_iGPUIndex = _iGPUIndex;
m_filterConfig.m_eType = _eFilter;
m_filterConfig.m_iCustomFilterWidth = _iFilterWidth;
m_bShortScan = false;
// success
m_bIsInitialized = true;
m_pAlgo = new astraCUDA::FBP();
m_bAlgoInit = false;
if(_pfFilter != NULL)
{
int iFilterElementCount = 0;
if((m_filterConfig.m_eType != FILTER_SINOGRAM) && (m_filterConfig.m_eType != FILTER_RSINOGRAM))
{
iFilterElementCount = _iFilterWidth;
}
else
{
iFilterElementCount = m_pSinogram->getAngleCount();
}
m_filterConfig.m_pfCustomFilter = new float[iFilterElementCount];
memcpy(m_filterConfig.m_pfCustomFilter, _pfFilter, iFilterElementCount * sizeof(float));
}
else
{
m_filterConfig.m_pfCustomFilter = NULL;
}
m_filterConfig.m_fParameter = _fFilterParameter;
return check();
}
void CCudaFilteredBackProjectionAlgorithm::initCUDAAlgorithm()
{
CCudaReconstructionAlgorithm2D::initCUDAAlgorithm();
astraCUDA::FBP* pFBP = dynamic_cast<astraCUDA::FBP*>(m_pAlgo);
bool ok = pFBP->setFilter(m_filterConfig);
if (!ok) {
ASTRA_ERROR("CCudaFilteredBackProjectionAlgorithm: Failed to set filter");
ASTRA_ASSERT(ok);
}
ok &= pFBP->setShortScan(m_bShortScan);
if (!ok) {
ASTRA_ERROR("CCudaFilteredBackProjectionAlgorithm: Failed to set short-scan mode");
}
const CVolumeGeometry2D& volGeom = *m_pReconstruction->getGeometry();
float fPixelArea = volGeom.getPixelArea();
ok &= pFBP->setReconstructionScale(1.0f/fPixelArea);
if (!ok) {
ASTRA_ERROR("CCudaFilteredBackProjectionAlgorithm: Failed to set reconstruction scale");
}
}
bool CCudaFilteredBackProjectionAlgorithm::check()
{
// check pointers
ASTRA_CONFIG_CHECK(m_pSinogram, "FBP_CUDA", "Invalid Projection Data Object.");
ASTRA_CONFIG_CHECK(m_pReconstruction, "FBP_CUDA", "Invalid Reconstruction Data Object.");
ASTRA_CONFIG_CHECK(m_filterConfig.m_eType != FILTER_ERROR, "FBP_CUDA", "Invalid filter name.");
if((m_filterConfig.m_eType == FILTER_PROJECTION) || (m_filterConfig.m_eType == FILTER_SINOGRAM) || (m_filterConfig.m_eType == FILTER_RPROJECTION) || (m_filterConfig.m_eType == FILTER_RSINOGRAM))
{
ASTRA_CONFIG_CHECK(m_filterConfig.m_pfCustomFilter, "FBP_CUDA", "Invalid filter pointer.");
}
// check initializations
ASTRA_CONFIG_CHECK(m_pSinogram->isInitialized(), "FBP_CUDA", "Projection Data Object Not Initialized.");
ASTRA_CONFIG_CHECK(m_pReconstruction->isInitialized(), "FBP_CUDA", "Reconstruction Data Object Not Initialized.");
// check gpu index
ASTRA_CONFIG_CHECK(m_iGPUIndex >= -1, "FBP_CUDA", "GPUIndex must be a non-negative integer or -1.");
// check pixel supersampling
ASTRA_CONFIG_CHECK(m_iPixelSuperSampling >= 0, "FBP_CUDA", "PixelSuperSampling must be a non-negative integer.");
ASTRA_CONFIG_CHECK(checkCustomFilterSize(m_filterConfig, *m_pSinogram->getGeometry()), "FBP_CUDA", "Filter size mismatch");
// success
m_bIsInitialized = true;
return true;
}
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