From 9831569ef1730b1003f8ebe4378ce31973fcdf9f Mon Sep 17 00:00:00 2001 From: Willem Jan Palenstijn Date: Wed, 1 Oct 2014 16:52:21 +0200 Subject: Support flexible 2D volume geometry --- cuda/2d/astra.cu | 266 +++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 180 insertions(+), 86 deletions(-) (limited to 'cuda/2d/astra.cu') diff --git a/cuda/2d/astra.cu b/cuda/2d/astra.cu index f4d4717..087905d 100644 --- a/cuda/2d/astra.cu +++ b/cuda/2d/astra.cu @@ -43,6 +43,10 @@ $Id$ #include #include "../../include/astra/Logger.h" +#include "../../include/astra/VolumeGeometry2D.h" +#include "../../include/astra/ParallelProjectionGeometry2D.h" +#include "../../include/astra/FanFlatProjectionGeometry2D.h" +#include "../../include/astra/FanFlatVecProjectionGeometry2D.h" // For fan beam FBP weighting #include "../3d/fdk.h" @@ -628,7 +632,7 @@ bool astraCudaFP(const float* pfVolume, float* pfSinogram, unsigned int iProjAngles, unsigned int iProjDets, const float *pfAngles, const float *pfOffsets, float fDetSize, unsigned int iDetSuperSampling, - int iGPUIndex) + float fOutputScale, int iGPUIndex) { SDimensions dims; @@ -687,7 +691,7 @@ bool astraCudaFP(const float* pfVolume, float* pfSinogram, } zeroProjectionData(D_sinoData, sinoPitch, dims); - ok = FP(D_volumeData, volumePitch, D_sinoData, sinoPitch, dims, pfAngles, pfOffsets, 1.0f); + ok = FP(D_volumeData, volumePitch, D_sinoData, sinoPitch, dims, pfAngles, pfOffsets, fOutputScale); if (!ok) { cudaFree(D_volumeData); cudaFree(D_sinoData); @@ -711,19 +715,18 @@ bool astraCudaFP(const float* pfVolume, float* pfSinogram, bool astraCudaFanFP(const float* pfVolume, float* pfSinogram, unsigned int iVolWidth, unsigned int iVolHeight, unsigned int iProjAngles, unsigned int iProjDets, - const float *pfAngles, float fOriginSourceDistance, - float fOriginDetectorDistance, float fPixelSize, - float fDetSize, - unsigned int iDetSuperSampling, + const SFanProjection *pAngles, + unsigned int iDetSuperSampling, float fOutputScale, int iGPUIndex) { SDimensions dims; - if (iProjAngles == 0 || iProjDets == 0 || pfAngles == 0) + if (iProjAngles == 0 || iProjDets == 0 || pAngles == 0) return false; dims.iProjAngles = iProjAngles; dims.iProjDets = iProjDets; + dims.fDetScale = 1.0f; // TODO? if (iDetSuperSampling == 0) return false; @@ -774,27 +777,7 @@ bool astraCudaFanFP(const float* pfVolume, float* pfSinogram, zeroProjectionData(D_sinoData, sinoPitch, dims); - // TODO: Turn this geometry conversion into a util function - SFanProjection* projs = new SFanProjection[dims.iProjAngles]; - - float fSrcX0 = 0.0f; - float fSrcY0 = -fOriginSourceDistance / fPixelSize; - float fDetUX0 = fDetSize / fPixelSize; - float fDetUY0 = 0.0f; - float fDetSX0 = dims.iProjDets * fDetUX0 / -2.0f; - float fDetSY0 = fOriginDetectorDistance / fPixelSize; - -#define ROTATE0(name,i,alpha) do { projs[i].f##name##X = f##name##X0 * cos(alpha) - f##name##Y0 * sin(alpha); projs[i].f##name##Y = f##name##X0 * sin(alpha) + f##name##Y0 * cos(alpha); } while(0) - for (int i = 0; i < dims.iProjAngles; ++i) { - ROTATE0(Src, i, pfAngles[i]); - ROTATE0(DetS, i, pfAngles[i]); - ROTATE0(DetU, i, pfAngles[i]); - } - -#undef ROTATE0 - - ok = FanFP(D_volumeData, volumePitch, D_sinoData, sinoPitch, dims, projs, 1.0f); - delete[] projs; + ok = FanFP(D_volumeData, volumePitch, D_sinoData, sinoPitch, dims, pAngles, fOutputScale); if (!ok) { cudaFree(D_volumeData); @@ -819,94 +802,205 @@ bool astraCudaFanFP(const float* pfVolume, float* pfSinogram, } -bool astraCudaFanFP(const float* pfVolume, float* pfSinogram, - unsigned int iVolWidth, unsigned int iVolHeight, - unsigned int iProjAngles, unsigned int iProjDets, - const SFanProjection *pAngles, - unsigned int iDetSuperSampling, - int iGPUIndex) +bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, + const CParallelProjectionGeometry2D* pProjGeom, + float*& detectorOffsets, float*& projectionAngles, + float& detSize, float& outputScale) { - SDimensions dims; + assert(pVolGeom); + assert(pProjGeom); + assert(pProjGeom->getProjectionAngles()); - if (iProjAngles == 0 || iProjDets == 0 || pAngles == 0) - return false; + const float EPS = 0.00001f; - dims.iProjAngles = iProjAngles; - dims.iProjDets = iProjDets; - dims.fDetScale = 1.0f; // TODO? + int nth = pProjGeom->getProjectionAngleCount(); - if (iDetSuperSampling == 0) + // Check if pixels are square + if (abs(pVolGeom->getPixelLengthX() - pVolGeom->getPixelLengthY()) > EPS) return false; - dims.iRaysPerDet = iDetSuperSampling; - if (iVolWidth <= 0 || iVolHeight <= 0) - return false; + // Scale volume pixels to 1x1 + detSize = pProjGeom->getDetectorWidth() / pVolGeom->getPixelLengthX(); - dims.iVolWidth = iVolWidth; - dims.iVolHeight = iVolHeight; - - if (iGPUIndex != -1) { - cudaSetDevice(iGPUIndex); - cudaError_t err = cudaGetLastError(); + // Copy angles + float *angles = new float[nth]; + for (int i = 0; i < nth; ++i) + angles[i] = pProjGeom->getProjectionAngles()[i]; + projectionAngles = angles; - // Ignore errors caused by calling cudaSetDevice multiple times - if (err != cudaSuccess && err != cudaErrorSetOnActiveProcess) - return false; + // Check if we need to translate + bool offCenter = false; + if (abs(pVolGeom->getWindowMinX() + pVolGeom->getWindowMaxX()) > EPS || + abs(pVolGeom->getWindowMinY() + pVolGeom->getWindowMaxY()) > EPS) + { + offCenter = true; } - bool ok; + // If there are existing detector offsets, or if we need to translate, + // we need to return offsets + if (pProjGeom->getExtraDetectorOffset() || offCenter) + { + float* offset = new float[nth]; + + if (pProjGeom->getExtraDetectorOffset()) { + for (int i = 0; i < nth; ++i) + offset[i] = pProjGeom->getExtraDetectorOffset()[i]; + } else { + for (int i = 0; i < nth; ++i) + offset[i] = 0.0f; + } - float* D_volumeData; - unsigned int volumePitch; + if (offCenter) { + float dx = (pVolGeom->getWindowMinX() + pVolGeom->getWindowMaxX()) / 2; + float dy = (pVolGeom->getWindowMinY() + pVolGeom->getWindowMaxY()) / 2; - ok = allocateVolumeData(D_volumeData, volumePitch, dims); - if (!ok) - return false; + // CHECKME: Is d in pixels or in units? - float* D_sinoData; - unsigned int sinoPitch; + for (int i = 0; i < nth; ++i) { + float d = dx * cos(angles[i]) + dy * sin(angles[i]); + offset[i] += d; + } + } - ok = allocateProjectionData(D_sinoData, sinoPitch, dims); - if (!ok) { - cudaFree(D_volumeData); - return false; + // CHECKME: Order of scaling and translation + + // Scale volume pixels to 1x1 + for (int i = 0; i < nth; ++i) { + //offset[i] /= pVolGeom->getPixelLengthX(); + //offset[i] *= detSize; + } + + + detectorOffsets = offset; + } else { + detectorOffsets = 0; } - ok = copyVolumeToDevice(pfVolume, dims.iVolWidth, - dims, - D_volumeData, volumePitch); - if (!ok) { - cudaFree(D_volumeData); - cudaFree(D_sinoData); - return false; + outputScale = pVolGeom->getPixelLengthX(); + outputScale *= outputScale; + + return true; +} + +static void convertAstraGeometry_internal(const CVolumeGeometry2D* pVolGeom, + unsigned int iProjectionAngleCount, + astraCUDA::SFanProjection*& pProjs, + float& outputScale) +{ + // Translate + float dx = (pVolGeom->getWindowMinX() + pVolGeom->getWindowMaxX()) / 2; + float dy = (pVolGeom->getWindowMinY() + pVolGeom->getWindowMaxY()) / 2; + + for (int i = 0; i < iProjectionAngleCount; ++i) { + pProjs[i].fSrcX -= dx; + pProjs[i].fSrcY -= dy; + pProjs[i].fDetSX -= dx; + pProjs[i].fDetSY -= dy; } - zeroProjectionData(D_sinoData, sinoPitch, dims); + // CHECKME: Order of scaling and translation - ok = FanFP(D_volumeData, volumePitch, D_sinoData, sinoPitch, dims, pAngles, 1.0f); + // Scale + float factor = 1.0f / pVolGeom->getPixelLengthX(); + for (int i = 0; i < iProjectionAngleCount; ++i) { + pProjs[i].fSrcX *= factor; + pProjs[i].fSrcY *= factor; + pProjs[i].fDetSX *= factor; + pProjs[i].fDetSY *= factor; + pProjs[i].fDetUX *= factor; + pProjs[i].fDetUY *= factor; - if (!ok) { - cudaFree(D_volumeData); - cudaFree(D_sinoData); - return false; } - ok = copySinogramFromDevice(pfSinogram, dims.iProjDets, - dims, - D_sinoData, sinoPitch); - if (!ok) { - cudaFree(D_volumeData); - cudaFree(D_sinoData); + // CHECKME: Check factor + outputScale = pVolGeom->getPixelLengthX(); +// outputScale *= outputScale; +} + + +bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, + const CFanFlatProjectionGeometry2D* pProjGeom, + astraCUDA::SFanProjection*& pProjs, + float& outputScale) +{ + assert(pVolGeom); + assert(pProjGeom); + assert(pProjGeom->getProjectionAngles()); + + const float EPS = 0.00001f; + + int nth = pProjGeom->getProjectionAngleCount(); + + // Check if pixels are square + if (abs(pVolGeom->getPixelLengthX() - pVolGeom->getPixelLengthY()) > EPS) return false; + + // TODO: Deprecate this. +// if (pProjGeom->getExtraDetectorOffset()) +// return false; + + + float fOriginSourceDistance = pProjGeom->getOriginSourceDistance(); + float fOriginDetectorDistance = pProjGeom->getOriginDetectorDistance(); + float fDetSize = pProjGeom->getDetectorWidth(); + const float *pfAngles = pProjGeom->getProjectionAngles(); + + pProjs = new SFanProjection[nth]; + + float fSrcX0 = 0.0f; + float fSrcY0 = -fOriginSourceDistance; + float fDetUX0 = fDetSize; + float fDetUY0 = 0.0f; + float fDetSX0 = pProjGeom->getDetectorCount() * fDetUX0 / -2.0f; + float fDetSY0 = fOriginDetectorDistance; + +#define ROTATE0(name,i,alpha) do { pProjs[i].f##name##X = f##name##X0 * cos(alpha) - f##name##Y0 * sin(alpha); pProjs[i].f##name##Y = f##name##X0 * sin(alpha) + f##name##Y0 * cos(alpha); } while(0) + for (int i = 0; i < nth; ++i) { + ROTATE0(Src, i, pfAngles[i]); + ROTATE0(DetS, i, pfAngles[i]); + ROTATE0(DetU, i, pfAngles[i]); } - cudaFree(D_volumeData); - cudaFree(D_sinoData); +#undef ROTATE0 + + convertAstraGeometry_internal(pVolGeom, nth, pProjs, outputScale); return true; } +bool convertAstraGeometry(const CVolumeGeometry2D* pVolGeom, + const CFanFlatVecProjectionGeometry2D* pProjGeom, + astraCUDA::SFanProjection*& pProjs, + float& outputScale) +{ + assert(pVolGeom); + assert(pProjGeom); + assert(pProjGeom->getProjectionVectors()); + + const float EPS = 0.00001f; + + int nx = pVolGeom->getGridColCount(); + int ny = pVolGeom->getGridRowCount(); + int nth = pProjGeom->getProjectionAngleCount(); + + // Check if pixels are square + if (abs(pVolGeom->getPixelLengthX() - pVolGeom->getPixelLengthY()) > EPS) + return false; + + pProjs = new SFanProjection[nth]; + + // Copy vectors + for (int i = 0; i < nth; ++i) + pProjs[i] = pProjGeom->getProjectionVectors()[i]; + + convertAstraGeometry_internal(pVolGeom, nth, pProjs, outputScale); + + return true; +} + + + } -- cgit v1.2.3