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Diffstat (limited to 'include/astra/CudaSirtAlgorithm3D.h')
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diff --git a/include/astra/CudaSirtAlgorithm3D.h b/include/astra/CudaSirtAlgorithm3D.h new file mode 100644 index 0000000..c2c794d --- /dev/null +++ b/include/astra/CudaSirtAlgorithm3D.h @@ -0,0 +1,187 @@ +/* +----------------------------------------------------------------------- +Copyright 2012 iMinds-Vision Lab, University of Antwerp + +Contact: astra@ua.ac.be +Website: http://astra.ua.ac.be + + +This file is part of the +All Scale Tomographic Reconstruction Antwerp Toolbox ("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/>. + +----------------------------------------------------------------------- +$Id$ +*/ + +#ifndef _INC_ASTRA_CUDASIRTALGORITHM3D +#define _INC_ASTRA_CUDASIRTALGORITHM3D + +#include "Globals.h" +#include "Config.h" + +#include "Algorithm.h" + +#include "Float32ProjectionData3DMemory.h" +#include "Float32VolumeData3DMemory.h" +#include "ReconstructionAlgorithm3D.h" + +#ifdef ASTRA_CUDA + +namespace astra { + +class AstraSIRT3d; + +/** + * \brief + * This class contains the 3D implementation of the SIRT (Simultaneous Iterative Reconstruction Technique) algorithm. + * + * The update step of pixel \f$v_j\f$ for iteration \f$k\f$ is given by: + * \f[ + * v_j^{(k+1)} = v_j^{(k)} + \alpha \sum_{i=1}^{M} \left( \frac{w_{ij}\left( p_i - \sum_{r=1}^{N} w_{ir}v_r^{(k)}\right)}{\sum_{k=1}^{N} w_{ik}} \right) \frac{1}{\sum_{l=1}^{M}w_{lj}} + * \f] + * + * \par XML Configuration + * + * \par MATLAB example + * \astra_code{ + * + * } + * + * \par References + * [1] "Computational Analysis and Improvement of SIRT", J. Gregor, T. Benson, IEEE Transactions on Medical Imaging, Vol. 22, No. 7, July 2008. + */ +class _AstraExport CCudaSirtAlgorithm3D : 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. + */ + CCudaSirtAlgorithm3D(); + + /** Constructor with initialization. + * + * @param _pProjector Projector Object. + * @param _pProjectionData ProjectionData3D object containing the projection data. + * @param _pReconstruction VolumeData3D object for storing the reconstructed volume. + */ + CCudaSirtAlgorithm3D(CProjector3D* _pProjector, + CFloat32ProjectionData3DMemory* _pProjectionData, + CFloat32VolumeData3DMemory* _pReconstruction); + + /** Copy constructor. + */ + CCudaSirtAlgorithm3D(const CCudaSirtAlgorithm3D&); + + /** Destructor. + */ + virtual ~CCudaSirtAlgorithm3D(); + + /** 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, + CFloat32ProjectionData3DMemory* _pSinogram, + CFloat32VolumeData3DMemory* _pReconstruction); + + /** Get all information parameters + * + * @return map with all boost::any object + */ + virtual map<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); + + + virtual void signalAbort(); + + /** Get the norm of the residual image. + * Only a few algorithms support this method. + * + * @param _fNorm if supported, the norm is returned here + * @return true if this operation is supported + */ + virtual bool getResidualNorm(float32& _fNorm); + +protected: + + AstraSIRT3d* m_pSirt; + + int m_iGPUIndex; + bool m_bAstraSIRTInit; + int m_iDetectorSuperSampling; + int m_iVoxelSuperSampling; +}; + +// inline functions +inline std::string CCudaSirtAlgorithm3D::description() const { return CCudaSirtAlgorithm3D::type; }; + +} // end namespace + +#endif + +#endif |