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Sinogram computation of thorax Forbild phantom at 2D slices x=0 and y=0 #432

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MathurinCharles opened this issue Aug 31, 2021 · 0 comments
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Sinogram computation of thorax Forbild phantom at 2D slices x=0 and y=0 #432

MathurinCharles opened this issue Aug 31, 2021 · 0 comments

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@MathurinCharles
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When reconstructing the thorax Forbild phantom (http://www.imp.uni-erlangen.de/phantoms/thorax/thorax.htm),
I noticed that the 2D slice z=0 is OK but not the 2D slices x=0 and y=0.
According to Simon, there is an issue with the sinogram computation for those slices.
SimonRit pushed a commit that referenced this issue Sep 7, 2021
BUG: deal with (half-)lines when intersecting quadric with a rays
34e901c 
Fixes #432. The fixed problem occurs when
- a ray is parallel to a cylinder but in the cylinder. There is no
intersection with the quadric so return the longest possible segment
with the given numerical precision.
- a ray intersects a cone two times but the segment should be before or
after the second intersection.
SimonRit pushed a commit that referenced this issue Sep 7, 2021
BUG: deal with (half-)lines when intersecting quadric with a rays
398385a 
Fixes #432. The fixed problem occurs when
- a ray is parallel to a cylinder but in the cylinder. There is no
intersection with the quadric so return the longest possible segment
with the given numerical precision.
- a ray intersects a cone two times but the segment should be before or
after the second intersection.
MichaelColonel pushed a commit to MichaelColonel/RTK that referenced this issue Jul 2, 2022
BUG: deal with (half-)lines when intersecting quadric with a rays
361b51d 
Fixes RTKConsortium#432. The fixed problem occurs when
- a ray is parallel to a cylinder but in the cylinder. There is no
intersection with the quadric so return the longest possible segment
with the given numerical precision.
- a ray intersects a cone two times but the segment should be before or
after the second intersection.
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@MathurinCharles