diff options
Diffstat (limited to 'cuda/2d/astra.h')
| -rw-r--r-- | cuda/2d/astra.h | 156 |
1 files changed, 21 insertions, 135 deletions
diff --git a/cuda/2d/astra.h b/cuda/2d/astra.h index 617883b..8e91feb 100644 --- a/cuda/2d/astra.h +++ b/cuda/2d/astra.h @@ -29,7 +29,6 @@ $Id$ #ifndef _CUDA_ASTRA_H #define _CUDA_ASTRA_H -#include "fft.h" #include "fbp_filters.h" #include "dims.h" #include "algo.h" @@ -43,140 +42,12 @@ enum Cuda2DProjectionKernel { }; class CParallelProjectionGeometry2D; +class CParallelVecProjectionGeometry2D; class CFanFlatProjectionGeometry2D; class CFanFlatVecProjectionGeometry2D; class CVolumeGeometry2D; +class CProjectionGeometry2D; -class AstraFBP_internal; - -class _AstraExport AstraFBP { -public: - // Constructor - AstraFBP(); - - // Destructor - ~AstraFBP(); - - // Set the size of the reconstruction rectangle. - // Volume pixels are currently assumed to be 1x1 squares. - bool setReconstructionGeometry(unsigned int iVolWidth, - unsigned int iVolHeight, - float fPixelSize = 1.0f); - - // Set the projection angles and number of detector pixels per angle. - // pfAngles must be a float array of length iProjAngles. - // fDetSize indicates the size of a detector pixel compared to a - // volume pixel edge. - // - // pfAngles will only be read from during this call. - bool setProjectionGeometry(unsigned int iProjAngles, - unsigned int iProjDets, - const float *pfAngles, - float fDetSize = 1.0f); - // Set the projection angles and number of detector pixels per angle. - // pfAngles must be a float array of length iProjAngles. - // fDetSize indicates the size of a detector pixel compared to a - // volume pixel edge. - // - // pfAngles, fanProjs will only be read from during this call. - bool setFanGeometry(unsigned int iProjAngles, - unsigned int iProjDets, - const astraCUDA::SFanProjection *fanProjs, - const float *pfAngles, - float fOriginSourceDistance, - float fOriginDetectorDistance, - float fDetSize = 1.0f, - bool bShortScan = false); - - // Set linear supersampling factor for the BP. - // (The number of rays is the square of this) - // - // This may optionally be called before init(). - bool setPixelSuperSampling(unsigned int iPixelSuperSampling); - - // Set per-detector shifts. - // - // pfTOffsets will only be read from during this call. - bool setTOffsets(const float *pfTOffsets); - - // Returns the required size of a filter in the fourier domain - // when multiplying it with the fft of the projection data. - // Its value is equal to the smallest power of two larger than - // or equal to twice the number of detectors in the spatial domain. - // - // _iDetectorCount is the number of detectors in the spatial domain. - static int calcFourierFilterSize(int _iDetectorCount); - - // Sets the filter type. Some filter types require the user to supply an - // array containing the filter. - // The number of elements in a filter in the fourier domain should be equal - // to the value returned by calcFourierFilterSize(). - // The following types require a filter: - // - // - FILTER_PROJECTION: - // The filter size should be equal to the output of - // calcFourierFilterSize(). The filtered sinogram is - // multiplied with the supplied filter. - // - // - FILTER_SINOGRAM: - // Same as FILTER_PROJECTION, but now the filter should contain a row for - // every projection direction. - // - // - FILTER_RPROJECTION: - // The filter should now contain one kernel (= ifft of filter), with the - // peak in the center. The filter width - // can be any value. If odd, the peak is assumed to be in the center, if - // even, it is assumed to be at floor(filter-width/2). - // - // - FILTER_RSINOGRAM - // Same as FILTER_RPROJECTION, but now the supplied filter should contain a - // row for every projection direction. - // - // A large number of other filters (FILTER_RAMLAK, FILTER_SHEPPLOGAN, - // FILTER_COSINE, FILTER_HAMMING, and FILTER_HANN) - // have a D variable, which gives the cutoff point in the frequency domain. - // Setting this value to 1.0 will include the whole filter - bool setFilter(E_FBPFILTER _eFilter, - const float * _pfHostFilter = NULL, - int _iFilterWidth = 0, float _fD = 1.0f, float _fFilterParameter = -1.0f); - - // Initialize CUDA, allocate GPU buffers and - // precompute geometry-specific data. - // - // CUDA is set up to use GPU number iGPUIndex. - // - // This must be called after calling setReconstructionGeometry() and - // setProjectionGeometry(). - bool init(int iGPUIndex = 0); - - // Setup input sinogram for a slice. - // pfSinogram must be a float array of size iProjAngles*iSinogramPitch. - // NB: iSinogramPitch is measured in floats, not in bytes. - // - // This must be called after init(), and before iterate(). It may be - // called again after iterate()/getReconstruction() to start a new slice. - // - // pfSinogram will only be read from during this call. - bool setSinogram(const float* pfSinogram, unsigned int iSinogramPitch); - - // Runs an FBP reconstruction. - // This must be called after setSinogram(). - // - // run can be called before setFilter, but will then use the default Ram-Lak filter - bool run(); - - // Get the reconstructed slice. - // pfReconstruction must be a float array of size - // iVolHeight*iReconstructionPitch. - // NB: iReconstructionPitch is measured in floats, not in bytes. - // - // This may be called after run(). - bool getReconstruction(float* pfReconstruction, - unsigned int iReconstructionPitch) const; - -private: - AstraFBP_internal* pData; -}; class _AstraExport BPalgo : public astraCUDA::ReconAlgo { public: @@ -199,8 +70,8 @@ public: _AstraExport bool astraCudaFP(const float* pfVolume, float* pfSinogram, unsigned int iVolWidth, unsigned int iVolHeight, unsigned int iProjAngles, unsigned int iProjDets, - const float *pfAngles, const float *pfOffsets, - float fDetSize = 1.0f, unsigned int iDetSuperSampling = 1, + const SParProjection *pAngles, + unsigned int iDetSuperSampling = 1, float fOutputScale = 1.0f, int iGPUIndex = 0); _AstraExport bool astraCudaFanFP(const float* pfVolume, float* pfSinogram, @@ -213,8 +84,14 @@ _AstraExport bool astraCudaFanFP(const float* pfVolume, float* pfSinogram, _AstraExport bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, const CParallelProjectionGeometry2D* pProjGeom, - float*& pfDetectorOffsets, float*& pfProjectionAngles, - float& fDetSize, float& fOutputScale); + astraCUDA::SParProjection*& pProjs, + float& fOutputScale); + +_AstraExport bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, + const CParallelVecProjectionGeometry2D* pProjGeom, + astraCUDA::SParProjection*& pProjs, + float& fOutputScale); + _AstraExport bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, const CFanFlatProjectionGeometry2D* pProjGeom, @@ -226,6 +103,15 @@ _AstraExport bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, astraCUDA::SFanProjection*& pProjs, float& outputScale); +_AstraExport bool convertAstraGeometry_dims(const CVolumeGeometry2D* pVolGeom, + const CProjectionGeometry2D* pProjGeom, + astraCUDA::SDimensions& dims); + +_AstraExport bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, + const CProjectionGeometry2D* pProjGeom, + astraCUDA::SParProjection*& pParProjs, + astraCUDA::SFanProjection*& pFanProjs, + float& outputScale); } #endif |