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author | Willem Jan Palenstijn <WillemJan.Palenstijn@uantwerpen.be> | 2013-07-01 22:34:11 +0000 |
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committer | wpalenst <WillemJan.Palenstijn@uantwerpen.be> | 2013-07-01 22:34:11 +0000 |
commit | b2fc6c70434674d74551c3a6c01ffb3233499312 (patch) | |
tree | b17f080ebc504ab85ebb7c3d89f917fd87ce9e00 /include/astra/SparseMatrixProjector2D.inl | |
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Update version to 1.3
Diffstat (limited to 'include/astra/SparseMatrixProjector2D.inl')
-rw-r--r-- | include/astra/SparseMatrixProjector2D.inl | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/astra/SparseMatrixProjector2D.inl b/include/astra/SparseMatrixProjector2D.inl new file mode 100644 index 0000000..8256232 --- /dev/null +++ b/include/astra/SparseMatrixProjector2D.inl @@ -0,0 +1,90 @@ +/* +----------------------------------------------------------------------- +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/>. + +----------------------------------------------------------------------- +$Id$ +*/ + + +//---------------------------------------------------------------------------------------- +// PROJECT ALL +template <typename Policy> +void CSparseMatrixProjector2D::project(Policy& p) +{ + ASTRA_ASSERT(m_bIsInitialized); + + for (int i = 0; i < m_pProjectionGeometry->getProjectionAngleCount(); ++i) + for (int j = 0; j < m_pProjectionGeometry->getDetectorCount(); ++j) + projectSingleRay(i, j, p); +} + + +//---------------------------------------------------------------------------------------- +// PROJECT SINGLE PROJECTION +template <typename Policy> +void CSparseMatrixProjector2D::projectSingleProjection(int _iProjection, Policy& p) +{ + ASTRA_ASSERT(m_bIsInitialized); + + for (int j = 0; j < m_pProjectionGeometry->getDetectorCount(); ++j) + projectSingleRay(_iProjection, j, p); +} + + +//---------------------------------------------------------------------------------------- +// PROJECT SINGLE RAY +template <typename Policy> +void CSparseMatrixProjector2D::projectSingleRay(int _iProjection, int _iDetector, Policy& p) +{ + ASTRA_ASSERT(m_bIsInitialized); + + int iRayIndex = _iProjection * m_pProjectionGeometry->getDetectorCount() + _iDetector; + const CSparseMatrix* pMatrix = dynamic_cast<CSparseMatrixProjectionGeometry2D*>(m_pProjectionGeometry)->getMatrix(); + + // POLICY: RAY PRIOR + if (!p.rayPrior(iRayIndex)) return; + + const unsigned int* piColIndices; + const float32* pfValues; + unsigned int iSize; + + pMatrix->getRowData(iRayIndex, iSize, pfValues, piColIndices); + + for (unsigned int i = 0; i < iSize; ++i) { + unsigned int iVolumeIndex = piColIndices[i]; + + // POLICY: PIXEL PRIOR + if (p.pixelPrior(iVolumeIndex)) { + + // POLICY: ADD + p.addWeight(iRayIndex, iVolumeIndex, pfValues[i]); + + // POLICY: PIXEL POSTERIOR + p.pixelPosterior(iVolumeIndex); + } + } + + // POLICY: RAY POSTERIOR + p.rayPosterior(iRayIndex); +} |