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| author | Willem Jan Palenstijn <wjp@usecode.org> | 2019-03-29 21:21:29 +0100 |
|---|---|---|
| committer | Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl> | 2019-09-25 14:10:08 +0200 |
| commit | 3cf63d335ebe392a8c77f0c90395c18150647aeb (patch) | |
| tree | 60a96bfe45c62aa9e57c1c5751e72d3794934845 /cuda/3d/cone_bp.cu | |
| parent | 87715885f3b4a80693493e37aa8293899a6b987e (diff) | |
| download | astra-3cf63d335ebe392a8c77f0c90395c18150647aeb.tar.gz astra-3cf63d335ebe392a8c77f0c90395c18150647aeb.tar.bz2 astra-3cf63d335ebe392a8c77f0c90395c18150647aeb.tar.xz astra-3cf63d335ebe392a8c77f0c90395c18150647aeb.zip | |
Adjust adjoint to line integral scaling
Diffstat (limited to 'cuda/3d/cone_bp.cu')
| -rw-r--r-- | cuda/3d/cone_bp.cu | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/cuda/3d/cone_bp.cu b/cuda/3d/cone_bp.cu index feebda2..2a7ec80 100644 --- a/cuda/3d/cone_bp.cu +++ b/cuda/3d/cone_bp.cu @@ -140,8 +140,10 @@ __global__ void dev_cone_BP(void* D_volData, unsigned int volPitch, int startAng if (FDKWEIGHT) { // The correct factor here is this one: // Z[idx] += (fr*fCd.w)*(fr*fCd.w)*fVal; - // This is the square of the inverse magnification factor - // from fX,fY,fZ to the detector. + // This is the square of the magnification factor + // from fX,fY,fZ to the virtual detector, where the + // virtual detector is the plane through the origin + // parallel to the detector, so spanned by u,v. // Since we are assuming we have a circular cone // beam trajectory, fCd.w is constant, and we instead |