From d61ce8cb50cee2145d66a209cbeb2b07ae645355 Mon Sep 17 00:00:00 2001
From: Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl>
Date: Thu, 30 Nov 2017 17:41:13 +0100
Subject: Adapt FBP_CUDA voxel-size weighting factors

---
 cuda/3d/fdk.cu | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'cuda/3d')

diff --git a/cuda/3d/fdk.cu b/cuda/3d/fdk.cu
index 0630afe..11c68e1 100644
--- a/cuda/3d/fdk.cu
+++ b/cuda/3d/fdk.cu
@@ -83,12 +83,13 @@ __global__ void devFDK_preweight(void* D_projData, unsigned int projPitch, unsig
 
 	float fV = (startDetectorV - 0.5f*dims.iProjV + 0.5f) * fDetVSize + fZShift;
 
-	// Four contributions to the weighting factors:
+	// Contributions to the weighting factors:
 	// fCentralRayLength / fRayLength   : the main FDK preweighting factor
 	// fSrcOrigin / (fDetUSize * fCentralRayLength)
 	//                                  : to adjust the filter to the det width
 	// || u v s || ^ 2                  : see cone_bp.cu, FDKWEIGHT
 	// pi / (2 * iProjAngles)           : scaling of the integral over angles
+	// fVoxSize ^ 2                     : ...
 
 	const float fW1 = fSrcOrigin * fDetUSize * fDetVSize;
 	const float fW2 = fCentralRayLength / (fDetUSize * fSrcOrigin);
-- 
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