L.S., I have noticed a behaviour change in SART after commit 5dc1d78. In SARTConeBeamReconstructionFilter, m_RayBoxFilter->SetBoxFromImage(this->GetInput(0), false) attempts to pass false to bWithExternalHalfPixelBorder, although before this commit this variable was not used in RayBoxIntersectionImageFilter::SetBoxFromImage and then when rtk::BoxShape::SetBoxFromImage is called the default half pixel border flag was set to true. After this commit a false can finally be passed through. This gives slight different reconstruction results than before. I was just wondering which one is more correct, with or without the half pixel border for the volume used for the normalization. I tried to follow the external link of explanation given in the code of SetBoxFromImage but found it broken. Could anyone give a brief explanation? Thanks.
Best regards, Chao
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