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authorWillem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl>2017-10-12 15:17:10 +0200
committerWillem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl>2017-10-12 15:17:10 +0200
commit08df6c4167118e0a3b5f128078f9c13f206a171a (patch)
tree0883b5967008e83fb1ae3f0a00bd675bba7116b4 /include/astra/ParallelBeamLineKernelProjector2D.inl
parent5ad3d86b6e2c39de7465186ec8702053a82b6152 (diff)
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Fix some warnings
Diffstat (limited to 'include/astra/ParallelBeamLineKernelProjector2D.inl')
-rw-r--r--include/astra/ParallelBeamLineKernelProjector2D.inl179
1 files changed, 89 insertions, 90 deletions
diff --git a/include/astra/ParallelBeamLineKernelProjector2D.inl b/include/astra/ParallelBeamLineKernelProjector2D.inl
index e516fe1..7db0a34 100644
--- a/include/astra/ParallelBeamLineKernelProjector2D.inl
+++ b/include/astra/ParallelBeamLineKernelProjector2D.inl
@@ -49,94 +49,94 @@ void CParallelBeamLineKernelProjector2D::projectSingleRay(int _iProjection, int
//----------------------------------------------------------------------------------------
-// PROJECT BLOCK - vector projection geometry
-//
-// Kernel limitations: isotropic pixels (PixelLengthX == PixelLengthY)
-//
-// For each angle/detector pair:
-//
-// Let D=(Dx,Dy) denote the centre of the detector (point) in volume coordinates, and
-// let R=(Rx,Ry) denote the direction of the ray (vector).
-//
-// For mainly vertical rays (|Rx|<=|Ry|),
-// let E=(Ex,Ey) denote the centre of the most upper left pixel:
-// E = (WindowMinX + PixelLengthX/2, WindowMaxY - PixelLengthY/2),
-// and let F=(Fx,Fy) denote a vector to the next pixel
-// F = (PixelLengthX, 0)
-//
-// The intersection of the ray (D+aR) with the centre line of the upper row of pixels (E+bF) is
-// { Dx + a*Rx = Ex + b*Fx
-// { Dy + a*Ry = Ey + b*Fy
-// Solving for (a,b) results in:
-// a = (Ey + b*Fy - Dy)/Ry
-// = (Ey - Dy)/Ry
-// b = (Dx + a*Rx - Ex)/Fx
-// = (Dx + (Ey - Dy)*Rx/Ry - Ex)/Fx
-//
-// Define c as the x-value of the intersection of the ray with the upper row in pixel coordinates.
-// c = b
-//
-// The intersection of the ray (D+aR) with the centre line of the second row of pixels (E'+bF) with
-// E'=(WindowMinX + PixelLengthX/2, WindowMaxY - 3*PixelLengthY/2)
-// expressed in x-value pixel coordinates is
-// c' = (Dx + (Ey' - Dy)*Rx/Ry - Ex)/Fx.
-// And thus:
-// deltac = c' - c = (Dx + (Ey' - Dy)*Rx/Ry - Ex)/Fx - (Dx + (Ey - Dy)*Rx/Ry - Ex)/Fx
-// = [(Ey' - Dy)*Rx/Ry - (Ey - Dy)*Rx/Ry]/Fx
-// = [Ey' - Ey]*(Rx/Ry)/Fx
-// = [Ey' - Ey]*(Rx/Ry)/Fx
-// = -PixelLengthY*(Rx/Ry)/Fx.
-//
-// Given c on a certain row, its closest pixel (col), and the distance (offset) to it, can be found:
-// col = floor(c+1/2)
-// offset = c - col
-//
-// The index of this pixel is
-// volumeIndex = row * colCount + col
-//
-// The projection kernel is defined by
-//
-// _____ LengthPerRow
-// /| | |\
-// / | | | \
-// __/ | | | \__ 0
-// -T -S 0 S T
-//
-// with S = 1/2 - 1/2*|Rx/Ry|, T = 1/2 + 1/2*|Rx/Ry|, and LengthPerRow = pixelLengthX * sqrt(Rx^2+Ry^2) / |Ry|
-//
-// And thus
-// { (offset+T)/(T-S) * LengthPerRow if -T <= offset < S
-// W_(rayIndex,volIndex) = { LengthPerRow if -S <= offset <= S
-// { (offset-S)/(T-S) * LengthPerRow if S < offset <= T
-//
-// If -T <= offset < S, the weight for the pixel directly to the left is
-// W_(rayIndex,volIndex-1) = LengthPerRow - (offset+T)/(T-S) * LengthPerRow,
-// and if S < offset <= T, the weight for the pixel directly to the right is
-// W_(rayIndex,volIndex+1) = LengthPerRow - (offset-S)/(T-S) * LengthPerRow.
-//
-//
-// Mainly horizontal rays (|Rx|<=|Ry|) are handled in a similar fashion:
-//
-// E = (WindowMinX + PixelLengthX/2, WindowMaxY - PixelLengthY/2),
-// F = (0, -PixelLengthX)
-//
-// a = (Ex + b*Fx - Dx)/Rx = (Ex - Dx)/Rx
-// b = (Dy + a*Ry - Ey)/Fy = (Dy + (Ex - Dx)*Ry/Rx - Ey)/Fy
-// r = b
-// deltar = PixelLengthX*(Ry/Rx)/Fy.
-// row = floor(r+1/2)
-// offset = r - row
-// S = 1/2 - 1/2*|Ry/Rx|
-// T = 1/2 + 1/2*|Ry/Rx|
-// LengthPerCol = pixelLengthY * sqrt(Rx^2+Ry^2) / |Rx|
-//
-// { (offset+T)/(T-S) * LengthPerCol if -T <= offset < S
-// W_(rayIndex,volIndex) = { LengthPerCol if -S <= offset <= S
-// { (offset-S)/(T-S) * LengthPerCol if S < offset <= T
-//
-// W_(rayIndex,volIndex-colcount) = LengthPerCol - (offset+T)/(T-S) * LengthPerCol
-// W_(rayIndex,volIndex+colcount) = LengthPerCol - (offset-S)/(T-S) * LengthPerCol
-//
+/* PROJECT BLOCK - vector projection geometry
+
+ Kernel limitations: isotropic pixels (PixelLengthX == PixelLengthY)
+
+ For each angle/detector pair:
+
+ Let D=(Dx,Dy) denote the centre of the detector (point) in volume coordinates, and
+ let R=(Rx,Ry) denote the direction of the ray (vector).
+
+ For mainly vertical rays (|Rx|<=|Ry|),
+ let E=(Ex,Ey) denote the centre of the most upper left pixel:
+ E = (WindowMinX + PixelLengthX/2, WindowMaxY - PixelLengthY/2),
+ and let F=(Fx,Fy) denote a vector to the next pixel
+ F = (PixelLengthX, 0)
+
+ The intersection of the ray (D+aR) with the centre line of the upper row of pixels (E+bF) is
+ { Dx + a*Rx = Ex + b*Fx
+ { Dy + a*Ry = Ey + b*Fy
+ Solving for (a,b) results in:
+ a = (Ey + b*Fy - Dy)/Ry
+ = (Ey - Dy)/Ry
+ b = (Dx + a*Rx - Ex)/Fx
+ = (Dx + (Ey - Dy)*Rx/Ry - Ex)/Fx
+
+ Define c as the x-value of the intersection of the ray with the upper row in pixel coordinates.
+ c = b
+
+ The intersection of the ray (D+aR) with the centre line of the second row of pixels (E'+bF) with
+ E'=(WindowMinX + PixelLengthX/2, WindowMaxY - 3*PixelLengthY/2)
+ expressed in x-value pixel coordinates is
+ c' = (Dx + (Ey' - Dy)*Rx/Ry - Ex)/Fx.
+ And thus:
+ deltac = c' - c = (Dx + (Ey' - Dy)*Rx/Ry - Ex)/Fx - (Dx + (Ey - Dy)*Rx/Ry - Ex)/Fx
+ = [(Ey' - Dy)*Rx/Ry - (Ey - Dy)*Rx/Ry]/Fx
+ = [Ey' - Ey]*(Rx/Ry)/Fx
+ = [Ey' - Ey]*(Rx/Ry)/Fx
+ = -PixelLengthY*(Rx/Ry)/Fx.
+
+ Given c on a certain row, its closest pixel (col), and the distance (offset) to it, can be found:
+ col = floor(c+1/2)
+ offset = c - col
+
+ The index of this pixel is
+ volumeIndex = row * colCount + col
+
+ The projection kernel is defined by
+
+ _____ LengthPerRow
+ /| | |\
+ / | | | \
+ __/ | | | \__ 0
+ -T -S 0 S T
+
+ with S = 1/2 - 1/2*|Rx/Ry|, T = 1/2 + 1/2*|Rx/Ry|, and LengthPerRow = pixelLengthX * sqrt(Rx^2+Ry^2) / |Ry|
+
+ And thus
+ { (offset+T)/(T-S) * LengthPerRow if -T <= offset < S
+ W_(rayIndex,volIndex) = { LengthPerRow if -S <= offset <= S
+ { (offset-S)/(T-S) * LengthPerRow if S < offset <= T
+
+ If -T <= offset < S, the weight for the pixel directly to the left is
+ W_(rayIndex,volIndex-1) = LengthPerRow - (offset+T)/(T-S) * LengthPerRow,
+ and if S < offset <= T, the weight for the pixel directly to the right is
+ W_(rayIndex,volIndex+1) = LengthPerRow - (offset-S)/(T-S) * LengthPerRow.
+
+
+ Mainly horizontal rays (|Rx|<=|Ry|) are handled in a similar fashion:
+
+ E = (WindowMinX + PixelLengthX/2, WindowMaxY - PixelLengthY/2),
+ F = (0, -PixelLengthX)
+
+ a = (Ex + b*Fx - Dx)/Rx = (Ex - Dx)/Rx
+ b = (Dy + a*Ry - Ey)/Fy = (Dy + (Ex - Dx)*Ry/Rx - Ey)/Fy
+ r = b
+ deltar = PixelLengthX*(Ry/Rx)/Fy.
+ row = floor(r+1/2)
+ offset = r - row
+ S = 1/2 - 1/2*|Ry/Rx|
+ T = 1/2 + 1/2*|Ry/Rx|
+ LengthPerCol = pixelLengthY * sqrt(Rx^2+Ry^2) / |Rx|
+
+ { (offset+T)/(T-S) * LengthPerCol if -T <= offset < S
+ W_(rayIndex,volIndex) = { LengthPerCol if -S <= offset <= S
+ { (offset-S)/(T-S) * LengthPerCol if S < offset <= T
+
+ W_(rayIndex,volIndex-colcount) = LengthPerCol - (offset+T)/(T-S) * LengthPerCol
+ W_(rayIndex,volIndex+colcount) = LengthPerCol - (offset-S)/(T-S) * LengthPerCol
+*/
template <typename Policy>
void CParallelBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, int _iProjTo, int _iDetFrom, int _iDetTo, Policy& p)
{
@@ -155,7 +155,6 @@ void CParallelBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, i
const float32 inv_pixelLengthY = 1.0f / pixelLengthY;
const int colCount = m_pVolumeGeometry->getGridColCount();
const int rowCount = m_pVolumeGeometry->getGridRowCount();
- const int detCount = pVecProjectionGeometry->getDetectorCount();
// loop angles
for (int iAngle = _iProjFrom; iAngle < _iProjTo; ++iAngle) {
@@ -163,7 +162,7 @@ void CParallelBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, i
// variables
float32 Dx, Dy, Ex, Ey, S, T, weight, c, r, deltac, deltar, offset;
float32 RxOverRy, RyOverRx, lengthPerRow, lengthPerCol, invTminSTimesLengthPerRow, invTminSTimesLengthPerCol;
- int iVolumeIndex, iRayIndex, row, col, iDetector;
+ int iVolumeIndex, iRayIndex, row, col;
const SParProjection * proj = &pVecProjectionGeometry->getProjectionVectors()[iAngle];