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| author | Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl> | 2015-12-04 16:35:00 +0100 |
|---|---|---|
| committer | Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl> | 2015-12-04 16:35:00 +0100 |
| commit | f3ac1849f2b141ea1845752e1ca2317845e90e3a (patch) | |
| tree | adcdc9013af5cca4165857408ed7181ffdf0de64 /src/ParallelProjectionGeometry3D.cpp | |
| parent | 8144bf0397ee1913b830d82058ccd40df741f1b3 (diff) | |
| parent | 0d015b1c91581ee5ef3e936f03e4c62fbc7ea362 (diff) | |
| download | astra-f3ac1849f2b141ea1845752e1ca2317845e90e3a.tar.gz astra-f3ac1849f2b141ea1845752e1ca2317845e90e3a.tar.bz2 astra-f3ac1849f2b141ea1845752e1ca2317845e90e3a.tar.xz astra-f3ac1849f2b141ea1845752e1ca2317845e90e3a.zip | |
Merge branch 'master'
Diffstat (limited to 'src/ParallelProjectionGeometry3D.cpp')
| -rw-r--r-- | src/ParallelProjectionGeometry3D.cpp | 81 |
1 files changed, 78 insertions, 3 deletions
diff --git a/src/ParallelProjectionGeometry3D.cpp b/src/ParallelProjectionGeometry3D.cpp index 1c87157..7b64fd9 100644 --- a/src/ParallelProjectionGeometry3D.cpp +++ b/src/ParallelProjectionGeometry3D.cpp @@ -27,8 +27,10 @@ $Id$ */ #include "astra/ParallelProjectionGeometry3D.h" -#include <boost/lexical_cast.hpp> +#include "astra/GeometryUtil3D.h" + +#include <boost/lexical_cast.hpp> #include <cstring> using namespace std; @@ -185,9 +187,9 @@ CVector3D CParallelProjectionGeometry3D::getProjectionDirection(int _iProjection return CVector3D(fDirX, fDirY, fDirZ); } -void CParallelProjectionGeometry3D::projectPoint(float32 fX, float32 fY, float32 fZ, +void CParallelProjectionGeometry3D::projectPoint(double fX, double fY, double fZ, int iAngleIndex, - float32 &fU, float32 &fV) const + double &fU, double &fV) const { ASTRA_ASSERT(iAngleIndex >= 0); ASTRA_ASSERT(iAngleIndex < m_iProjectionAngleCount); @@ -214,6 +216,79 @@ CParallelProjectionGeometry2D * CParallelProjectionGeometry3D::createProjectionG return pOutput; } +void CParallelProjectionGeometry3D::backprojectPointX(int iAngleIndex, double fU, double fV, + double fX, double &fY, double &fZ) const +{ + ASTRA_ASSERT(iAngleIndex >= 0); + ASTRA_ASSERT(iAngleIndex < m_iProjectionAngleCount); + + SPar3DProjection *projs = genPar3DProjections(1, m_iDetectorColCount, m_iDetectorRowCount, + m_fDetectorSpacingX, m_fDetectorSpacingY, + &m_pfProjectionAngles[iAngleIndex]); + + SPar3DProjection &proj = projs[0]; + + double px = proj.fDetSX + fU * proj.fDetUX + fV * proj.fDetVX; + double py = proj.fDetSY + fU * proj.fDetUY + fV * proj.fDetVY; + double pz = proj.fDetSZ + fU * proj.fDetUZ + fV * proj.fDetVZ; + + double a = (fX - px) / proj.fRayX; + + fY = py + a * proj.fRayY; + fZ = pz + a * proj.fRayZ; + + delete[] projs; +} + +void CParallelProjectionGeometry3D::backprojectPointY(int iAngleIndex, double fU, double fV, + double fY, double &fX, double &fZ) const +{ + ASTRA_ASSERT(iAngleIndex >= 0); + ASTRA_ASSERT(iAngleIndex < m_iProjectionAngleCount); + + SPar3DProjection *projs = genPar3DProjections(1, m_iDetectorColCount, m_iDetectorRowCount, + m_fDetectorSpacingX, m_fDetectorSpacingY, + &m_pfProjectionAngles[iAngleIndex]); + + SPar3DProjection &proj = projs[0]; + + double px = proj.fDetSX + fU * proj.fDetUX + fV * proj.fDetVX; + double py = proj.fDetSY + fU * proj.fDetUY + fV * proj.fDetVY; + double pz = proj.fDetSZ + fU * proj.fDetUZ + fV * proj.fDetVZ; + + double a = (fY - py) / proj.fRayY; + + fX = px + a * proj.fRayX; + fZ = pz + a * proj.fRayZ; + + delete[] projs; +} + +void CParallelProjectionGeometry3D::backprojectPointZ(int iAngleIndex, double fU, double fV, + double fZ, double &fX, double &fY) const +{ + ASTRA_ASSERT(iAngleIndex >= 0); + ASTRA_ASSERT(iAngleIndex < m_iProjectionAngleCount); + + SPar3DProjection *projs = genPar3DProjections(1, m_iDetectorColCount, m_iDetectorRowCount, + m_fDetectorSpacingX, m_fDetectorSpacingY, + &m_pfProjectionAngles[iAngleIndex]); + + SPar3DProjection &proj = projs[0]; + + double px = proj.fDetSX + fU * proj.fDetUX + fV * proj.fDetVX; + double py = proj.fDetSY + fU * proj.fDetUY + fV * proj.fDetVY; + double pz = proj.fDetSZ + fU * proj.fDetUZ + fV * proj.fDetVZ; + + double a = (fZ - pz) / proj.fRayZ; + + fX = px + a * proj.fRayX; + fY = py + a * proj.fRayY; + + delete[] projs; +} + + //---------------------------------------------------------------------------------------- } // end namespace astra |