summaryrefslogtreecommitdiffstats
path: root/include/astra/SparseMatrixProjector2D.inl
diff options
context:
space:
mode:
authorWillem Jan Palenstijn <WillemJan.Palenstijn@uantwerpen.be>2013-07-01 22:34:11 +0000
committerwpalenst <WillemJan.Palenstijn@uantwerpen.be>2013-07-01 22:34:11 +0000
commitb2fc6c70434674d74551c3a6c01ffb3233499312 (patch)
treeb17f080ebc504ab85ebb7c3d89f917fd87ce9e00 /include/astra/SparseMatrixProjector2D.inl
downloadastra-b2fc6c70434674d74551c3a6c01ffb3233499312.tar.gz
astra-b2fc6c70434674d74551c3a6c01ffb3233499312.tar.bz2
astra-b2fc6c70434674d74551c3a6c01ffb3233499312.tar.xz
astra-b2fc6c70434674d74551c3a6c01ffb3233499312.zip
Update version to 1.3
Diffstat (limited to 'include/astra/SparseMatrixProjector2D.inl')
-rw-r--r--include/astra/SparseMatrixProjector2D.inl90
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);
+}