From 5edb35edc2c721b458334a65512b534912c2c542 Mon Sep 17 00:00:00 2001 From: Willem Jan Palenstijn Date: Wed, 23 Mar 2016 15:30:56 +0100 Subject: Add relaxation parameters to SIRT, SART --- cuda/2d/sirt.cu | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'cuda/2d/sirt.cu') diff --git a/cuda/2d/sirt.cu b/cuda/2d/sirt.cu index 162ee77..4baaccb 100644 --- a/cuda/2d/sirt.cu +++ b/cuda/2d/sirt.cu @@ -50,6 +50,8 @@ SIRT::SIRT() : ReconAlgo() D_minMaskData = 0; D_maxMaskData = 0; + fRelaxation = 1.0f; + freeMinMaxMasks = false; } @@ -83,6 +85,8 @@ void SIRT::reset() useVolumeMask = false; useSinogramMask = false; + fRelaxation = 1.0f; + ReconAlgo::reset(); } @@ -139,6 +143,9 @@ bool SIRT::precomputeWeights() processVol(D_pixelWeight, D_maskData, pixelPitch, dims); } + // Also fold the relaxation factor into pixel weights + processVol(D_pixelWeight, fRelaxation, pixelPitch, dims); + return true; } @@ -253,6 +260,7 @@ bool SIRT::iterate(unsigned int iterations) callBP(D_tmpData, tmpPitch, D_projData, projPitch, 1.0f); + // pixel weights also contain the volume mask and relaxation factor processVol(D_volumeData, D_pixelWeight, D_tmpData, volumePitch, dims); if (useMinConstraint) -- cgit v1.2.3