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| author | Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl> | 2017-10-10 13:15:53 +0200 |
|---|---|---|
| committer | Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl> | 2017-10-11 12:19:34 +0200 |
| commit | 90ef1f69d79a0c40414c5932dfa9bd69f363ae80 (patch) | |
| tree | 5579258ec62e5cad1ba9a5203357b0bfc1c9a07a | |
| parent | bf92d2d8dfacd7125ed48403145dbd4dc6181e4a (diff) | |
| download | astra-90ef1f69d79a0c40414c5932dfa9bd69f363ae80.tar.gz astra-90ef1f69d79a0c40414c5932dfa9bd69f363ae80.tar.bz2 astra-90ef1f69d79a0c40414c5932dfa9bd69f363ae80.tar.xz astra-90ef1f69d79a0c40414c5932dfa9bd69f363ae80.zip | |
Scale 2D projection results by detector pixel width
The strip and cuda projectors already did this scaling, so this
makes the other behave consistently.
| -rw-r--r-- | include/astra/FanFlatBeamLineKernelProjector2D.inl | 6 | ||||
| -rw-r--r-- | include/astra/ParallelBeamLineKernelProjector2D.inl | 6 | ||||
| -rw-r--r-- | include/astra/ParallelBeamLinearKernelProjector2D.inl | 6 |
3 files changed, 12 insertions, 6 deletions
diff --git a/include/astra/FanFlatBeamLineKernelProjector2D.inl b/include/astra/FanFlatBeamLineKernelProjector2D.inl index 01f031c..c1e1e94 100644 --- a/include/astra/FanFlatBeamLineKernelProjector2D.inl +++ b/include/astra/FanFlatBeamLineKernelProjector2D.inl @@ -82,6 +82,8 @@ void CFanFlatBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, in const SFanProjection * proj = &pVecProjectionGeometry->getProjectionVectors()[iAngle]; + float32 detSize = sqrt(proj->fDetUX * proj->fDetUX + proj->fDetUY * proj->fDetUY); + // loop detectors for (iDetector = _iDetFrom; iDetector < _iDetTo; ++iDetector) { @@ -99,14 +101,14 @@ void CFanFlatBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, in bool vertical = fabs(Rx) < fabs(Ry); if (vertical) { RxOverRy = Rx/Ry; - lengthPerRow = pixelLengthX * sqrt(Rx*Rx + Ry*Ry) / abs(Ry); + lengthPerRow = detSize * pixelLengthX * sqrt(Rx*Rx + Ry*Ry) / abs(Ry); 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 = Ry/Rx; - lengthPerCol = pixelLengthY * sqrt(Rx*Rx + Ry*Ry) / abs(Rx); + lengthPerCol = detSize * pixelLengthY * sqrt(Rx*Rx + Ry*Ry) / abs(Rx); deltar = -pixelLengthX * RyOverRx * inv_pixelLengthY; S = 0.5f - 0.5f*fabs(RyOverRx); T = 0.5f + 0.5f*fabs(RyOverRx); 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); diff --git a/include/astra/ParallelBeamLinearKernelProjector2D.inl b/include/astra/ParallelBeamLinearKernelProjector2D.inl index ccb8cda..d2c529f 100644 --- a/include/astra/ParallelBeamLinearKernelProjector2D.inl +++ b/include/astra/ParallelBeamLinearKernelProjector2D.inl @@ -155,14 +155,16 @@ void CParallelBeamLinearKernelProjector2D::projectBlock_internal(int _iProjFrom, 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 = m_pVolumeGeometry->getPixelLengthX() * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayY); + lengthPerRow = detSize * m_pVolumeGeometry->getPixelLengthX() * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayY); deltac = -pixelLengthY * RxOverRy * inv_pixelLengthX; } else { RyOverRx = proj->fRayY/proj->fRayX; - lengthPerCol = m_pVolumeGeometry->getPixelLengthY() * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayX); + lengthPerCol = detSize * m_pVolumeGeometry->getPixelLengthY() * sqrt(proj->fRayY*proj->fRayY + proj->fRayX*proj->fRayX) / abs(proj->fRayX); deltar = -pixelLengthX * RyOverRx * inv_pixelLengthY; } |