RL: Perform voxel-by-voxel division #82
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KrisThielemans
requested changes
Jul 10, 2021
lib/petpvcRLPVCImageFilter.txx
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| while ( !divIt.IsAtEnd() ) | ||
| { | ||
| if (denomIt.Get() > 1e-4) |
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This is very dangerous as it assumes a certain scale in the image. The STIR solution is to use a number relative to the max (a median would be better but much more expensive). Even that is creating trouble for parametric images (as it uses a global max), see UCL/STIR#906. However, maybe that isn't so much of a problem here)
KrisThielemans
approved these changes
Jul 10, 2021
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The ITK
DivideFilterwill set the resultant image to::maxwhen the denominator is equal to zero. This causes RL to fail and produce a corrupt output image.fixes #81