diff options
Diffstat (limited to 'src/ParallelBeamStripKernelProjector2D.cpp')
| -rw-r--r-- | src/ParallelBeamStripKernelProjector2D.cpp | 102 |
1 files changed, 51 insertions, 51 deletions
diff --git a/src/ParallelBeamStripKernelProjector2D.cpp b/src/ParallelBeamStripKernelProjector2D.cpp index ab4e49e..5a0767b 100644 --- a/src/ParallelBeamStripKernelProjector2D.cpp +++ b/src/ParallelBeamStripKernelProjector2D.cpp @@ -87,9 +87,9 @@ bool CParallelBeamStripKernelProjector2D::_check() // check base class ASTRA_CONFIG_CHECK(CProjector2D::_check(), "ParallelBeamStripKernelProjector2D", "Error in Projector2D initialization"); - ASTRA_CONFIG_CHECK(dynamic_cast<CParallelProjectionGeometry2D*>(m_pProjectionGeometry), "ParallelBeamStripKernelProjector2D", "Unsupported projection geometry"); + ASTRA_CONFIG_CHECK(dynamic_cast<CParallelProjectionGeometry2D*>(m_pProjectionGeometry) || dynamic_cast<CParallelVecProjectionGeometry2D*>(m_pProjectionGeometry), "ParallelBeamStripKernelProjector2D", "Unsupported projection geometry"); - ASTRA_CONFIG_CHECK(m_pVolumeGeometry->getPixelLengthX() == m_pVolumeGeometry->getPixelLengthY(), "ParallelBeamStripKernelProjector2D", "Pixel height must equal pixel width."); + ASTRA_CONFIG_CHECK(abs(m_pVolumeGeometry->getPixelLengthX() / m_pVolumeGeometry->getPixelLengthY()) - 1 < eps, "ParallelBeamStripKernelProjector2D", "Pixel height must equal pixel width."); // success return true; @@ -163,57 +163,57 @@ void CParallelBeamStripKernelProjector2D::computeSingleRayWeights(int _iProjecti // Splat a single point std::vector<SDetector2D> CParallelBeamStripKernelProjector2D::projectPoint(int _iRow, int _iCol) { - float32 xUL = m_pVolumeGeometry->pixelColToCenterX(_iCol) - m_pVolumeGeometry->getPixelLengthX() * 0.5f; - float32 yUL = m_pVolumeGeometry->pixelRowToCenterY(_iRow) - m_pVolumeGeometry->getPixelLengthY() * 0.5f; - float32 xUR = m_pVolumeGeometry->pixelColToCenterX(_iCol) + m_pVolumeGeometry->getPixelLengthX() * 0.5f; - float32 yUR = m_pVolumeGeometry->pixelRowToCenterY(_iRow) - m_pVolumeGeometry->getPixelLengthY() * 0.5f; - float32 xLL = m_pVolumeGeometry->pixelColToCenterX(_iCol) - m_pVolumeGeometry->getPixelLengthX() * 0.5f; - float32 yLL = m_pVolumeGeometry->pixelRowToCenterY(_iRow) + m_pVolumeGeometry->getPixelLengthY() * 0.5f; - float32 xLR = m_pVolumeGeometry->pixelColToCenterX(_iCol) + m_pVolumeGeometry->getPixelLengthX() * 0.5f; - float32 yLR = m_pVolumeGeometry->pixelRowToCenterY(_iRow) + m_pVolumeGeometry->getPixelLengthY() * 0.5f; + // float32 xUL = m_pVolumeGeometry->pixelColToCenterX(_iCol) - m_pVolumeGeometry->getPixelLengthX() * 0.5f; + // float32 yUL = m_pVolumeGeometry->pixelRowToCenterY(_iRow) - m_pVolumeGeometry->getPixelLengthY() * 0.5f; + // float32 xUR = m_pVolumeGeometry->pixelColToCenterX(_iCol) + m_pVolumeGeometry->getPixelLengthX() * 0.5f; + // float32 yUR = m_pVolumeGeometry->pixelRowToCenterY(_iRow) - m_pVolumeGeometry->getPixelLengthY() * 0.5f; + // float32 xLL = m_pVolumeGeometry->pixelColToCenterX(_iCol) - m_pVolumeGeometry->getPixelLengthX() * 0.5f; + // float32 yLL = m_pVolumeGeometry->pixelRowToCenterY(_iRow) + m_pVolumeGeometry->getPixelLengthY() * 0.5f; + // float32 xLR = m_pVolumeGeometry->pixelColToCenterX(_iCol) + m_pVolumeGeometry->getPixelLengthX() * 0.5f; + // float32 yLR = m_pVolumeGeometry->pixelRowToCenterY(_iRow) + m_pVolumeGeometry->getPixelLengthY() * 0.5f; std::vector<SDetector2D> res; - // loop projectors and detectors - for (int iProjection = 0; iProjection < m_pProjectionGeometry->getProjectionAngleCount(); ++iProjection) { - - // get projection angle - float32 theta = m_pProjectionGeometry->getProjectionAngle(iProjection); - if (theta >= 7*PIdiv4) theta -= 2*PI; - bool inverse = false; - if (theta >= 3*PIdiv4) { - theta -= PI; - inverse = true; - } - - // calculate distance from the center of the voxel to the ray though the origin - float32 tUL = xUL * cos(theta) + yUL * sin(theta); - float32 tUR = xUR * cos(theta) + yUR * sin(theta); - float32 tLL = xLL * cos(theta) + yLL * sin(theta); - float32 tLR = xLR * cos(theta) + yLR * sin(theta); - if (inverse) { - tUL *= -1.0f; - tUR *= -1.0f; - tLL *= -1.0f; - tLR *= -1.0f; - } - float32 tMin = min(tUL, min(tUR, min(tLL,tLR))); - float32 tMax = max(tUL, max(tUR, max(tLL,tLR))); - - // calculate the offset on the detectorarray (in indices) - int dmin = (int)floor(m_pProjectionGeometry->detectorOffsetToIndexFloat(tMin)); - int dmax = (int)ceil(m_pProjectionGeometry->detectorOffsetToIndexFloat(tMax)); - - // add affected detectors to the list - for (int i = dmin; i <= dmax; ++i) { - if (i >= 0 && i < m_pProjectionGeometry->getDetectorCount()) { - SDetector2D det; - det.m_iAngleIndex = iProjection; - det.m_iDetectorIndex = i; - det.m_iIndex = iProjection * getProjectionGeometry()->getDetectorCount() + i; - res.push_back(det); - } - } - } + // // loop projectors and detectors + // for (int iProjection = 0; iProjection < m_pProjectionGeometry->getProjectionAngleCount(); ++iProjection) { + + // // get projection angle + // float32 theta = m_pProjectionGeometry->getProjectionAngle(iProjection); + // if (theta >= 7*PIdiv4) theta -= 2*PI; + // bool inverse = false; + // if (theta >= 3*PIdiv4) { + // theta -= PI; + // inverse = true; + // } + + // // calculate distance from the center of the voxel to the ray though the origin + // float32 tUL = xUL * cos(theta) + yUL * sin(theta); + // float32 tUR = xUR * cos(theta) + yUR * sin(theta); + // float32 tLL = xLL * cos(theta) + yLL * sin(theta); + // float32 tLR = xLR * cos(theta) + yLR * sin(theta); + // if (inverse) { + // tUL *= -1.0f; + // tUR *= -1.0f; + // tLL *= -1.0f; + // tLR *= -1.0f; + // } + // float32 tMin = min(tUL, min(tUR, min(tLL,tLR))); + // float32 tMax = max(tUL, max(tUR, max(tLL,tLR))); + + // // calculate the offset on the detectorarray (in indices) + // int dmin = (int)floor(m_pProjectionGeometry->detectorOffsetToIndexFloat(tMin)); + // int dmax = (int)ceil(m_pProjectionGeometry->detectorOffsetToIndexFloat(tMax)); + + // // add affected detectors to the list + // for (int i = dmin; i <= dmax; ++i) { + // if (i >= 0 && i < m_pProjectionGeometry->getDetectorCount()) { + // SDetector2D det; + // det.m_iAngleIndex = iProjection; + // det.m_iDetectorIndex = i; + // det.m_iIndex = iProjection * getProjectionGeometry()->getDetectorCount() + i; + // res.push_back(det); + // } + // } + // } // return result vector return res; |