diff options
Diffstat (limited to 'cuda/3d/fdk.cu')
| -rw-r--r-- | cuda/3d/fdk.cu | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/cuda/3d/fdk.cu b/cuda/3d/fdk.cu index fd5a8a2..45b6a28 100644 --- a/cuda/3d/fdk.cu +++ b/cuda/3d/fdk.cu @@ -267,7 +267,11 @@ __global__ void devFDK_ParkerWeight(void* D_projData, unsigned int projPitch, un //const float fGamma = atanf(fU / fCentralRayLength); //const float fBeta = gC_angle[angle]; const float fGamma = atanf(fU / fCentralRayLength); - const float fBeta = -gC_angle[angle]; + float fBeta = -gC_angle[angle]; + if (fBeta < 0.0f) + fBeta += 2*M_PI; + if (fBeta >= 2*M_PI) + fBeta -= 2*M_PI; // compute the weight depending on the location in the central fan's radon // space |