X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fbackprojectors.cpp;h=695582aa86d493c6c8ba85615f9c4989bf3acc7f;hp=e4a240824393f9186c5a7c259cf48ef996d503f3;hb=3931f11e050e896530ae96c9c28264e30d281c5f;hpb=4dcc4369ae9a151a27c3e3fbc183978db4ea6bdd

diff --git a/libctsim/backprojectors.cpp b/libctsim/backprojectors.cpp
index e4a2408..695582a 100644
--- a/libctsim/backprojectors.cpp
+++ b/libctsim/backprojectors.cpp
@@ -551,6 +551,9 @@ BackprojectDiff::BackprojectView (const double* const filteredProj, const double
   if (interpType == Backprojector::INTERP_LINEAR) {
     // precalculate scaled difference for linear interpolation
     deltaFilteredProj = new double [nDet];
+#if HAVE_OPENMP
+  #pragma omp parallel for
+#endif
     for (int i = 0; i < nDet - 1; i++)
       deltaFilteredProj[i] = filteredProj[i+1] - filteredProj[i];
     deltaFilteredProj[nDet - 1] = 0;  // last detector
@@ -627,6 +630,9 @@ BackprojectIntDiff::BackprojectView (const double* const filteredProj, const dou
   if (interpType == Backprojector::INTERP_LINEAR) {
     // precalculate scaled difference for linear interpolation
     deltaFilteredProj = new double [nDet];
+#if HAVE_OPENMP
+    #pragma omp parallel for
+#endif
     for (int i = 0; i < nDet - 1; i++)
       deltaFilteredProj[i] = (filteredProj[i+1] - filteredProj[i]) * dInvScale;
     deltaFilteredProj[nDet - 1] = 0;  // last detector