diff options
Diffstat (limited to 'include/astra/ParallelBeamLineKernelProjector2D.inl')
| -rw-r--r-- | include/astra/ParallelBeamLineKernelProjector2D.inl | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/astra/ParallelBeamLineKernelProjector2D.inl b/include/astra/ParallelBeamLineKernelProjector2D.inl index d88d1cb..e516fe1 100644 --- a/include/astra/ParallelBeamLineKernelProjector2D.inl +++ b/include/astra/ParallelBeamLineKernelProjector2D.inl @@ -167,17 +167,19 @@ void CParallelBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, i const SParProjection * proj = &pVecProjectionGeometry->getProjectionVectors()[iAngle]; + float32 detSize = sqrt(proj->fDetUX * proj->fDetUX + proj->fDetUY * proj->fDetUY); + bool vertical = fabs(proj->fRayX) < fabs(proj->fRayY); if (vertical) { RxOverRy = proj->fRayX/proj->fRayY; - lengthPerRow = pixelLengthX * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayY); + lengthPerRow = detSize * pixelLengthX * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayY); deltac = -pixelLengthY * RxOverRy * inv_pixelLengthX; S = 0.5f - 0.5f*fabs(RxOverRy); T = 0.5f + 0.5f*fabs(RxOverRy); invTminSTimesLengthPerRow = lengthPerRow / (T - S); } else { RyOverRx = proj->fRayY/proj->fRayX; - lengthPerCol = pixelLengthY * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayX); + lengthPerCol = detSize * pixelLengthY * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayX); deltar = -pixelLengthX * RyOverRx * inv_pixelLengthY; S = 0.5f - 0.5f*fabs(RyOverRx); T = 0.5f + 0.5f*fabs(RyOverRx); |