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-rw-r--r--include/astra/FanFlatBeamLineKernelProjector2D.inl494
1 files changed, 25 insertions, 469 deletions
diff --git a/include/astra/FanFlatBeamLineKernelProjector2D.inl b/include/astra/FanFlatBeamLineKernelProjector2D.inl
index e686532..7ea2749 100644
--- a/include/astra/FanFlatBeamLineKernelProjector2D.inl
+++ b/include/astra/FanFlatBeamLineKernelProjector2D.inl
@@ -29,11 +29,32 @@ $Id$
using namespace astra;
-//----------------------------------------------------------------------------------------
-// PROJECT ALL
template <typename Policy>
void CFanFlatBeamLineKernelProjector2D::project(Policy& p)
{
+ projectBlock_internal(0, m_pProjectionGeometry->getProjectionAngleCount(),
+ 0, m_pProjectionGeometry->getDetectorCount(), p);
+}
+
+template <typename Policy>
+void CFanFlatBeamLineKernelProjector2D::projectSingleProjection(int _iProjection, Policy& p)
+{
+ projectBlock_internal(_iProjection, _iProjection + 1,
+ 0, m_pProjectionGeometry->getDetectorCount(), p);
+}
+
+template <typename Policy>
+void CFanFlatBeamLineKernelProjector2D::projectSingleRay(int _iProjection, int _iDetector, Policy& p)
+{
+ projectBlock_internal(_iProjection, _iProjection + 1,
+ _iDetector, _iDetector + 1, p);
+}
+
+//----------------------------------------------------------------------------------------
+// PROJECT BLOCK
+template <typename Policy>
+void CFanFlatBeamLineKernelProjector2D::projectBlock_internal(int _iProjFrom, int _iProjTo, int _iDetFrom, int _iDetTo, Policy& p)
+{
// variables
float32 sin_theta, cos_theta, inv_sin_theta, inv_cos_theta, S, T, t, I, P, x, x2;
float32 lengthPerRow, updatePerRow, inv_pixelLengthX, lengthPerCol, updatePerCol, inv_pixelLengthY;
@@ -47,7 +68,7 @@ void CFanFlatBeamLineKernelProjector2D::project(Policy& p)
const SFanProjection * proj = 0;
// loop angles
- for (iAngle = 0; iAngle < m_pProjectionGeometry->getProjectionAngleCount(); ++iAngle) {
+ for (iAngle = _iProjFrom; iAngle < _iProjTo; ++iAngle) {
// get theta
if (pProjectionGeometry) {
@@ -69,7 +90,7 @@ void CFanFlatBeamLineKernelProjector2D::project(Policy& p)
}
// loop detectors
- for (iDetector = 0; iDetector < m_pProjectionGeometry->getDetectorCount(); ++iDetector) {
+ for (iDetector = _iDetFrom; iDetector < _iDetTo; ++iDetector) {
iRayIndex = iAngle * m_pProjectionGeometry->getDetectorCount() + iDetector;
@@ -273,468 +294,3 @@ void CFanFlatBeamLineKernelProjector2D::project(Policy& p)
} // end loop detector
} // end loop angles
}
-
-
-//----------------------------------------------------------------------------------------
-// PROJECT SINGLE PROJECTION
-template <typename Policy>
-void CFanFlatBeamLineKernelProjector2D::projectSingleProjection(int _iProjection, Policy& p)
-{
- // variables
- float32 sin_theta, cos_theta, inv_sin_theta, inv_cos_theta, S, T, t, I, P, x, x2;
- float32 lengthPerRow, updatePerRow, inv_pixelLengthX, lengthPerCol, updatePerCol, inv_pixelLengthY;
- int iVolumeIndex, iRayIndex, row, col, iDetector, x1;
- bool switch_t;
-
- const CFanFlatProjectionGeometry2D* pProjectionGeometry = dynamic_cast<CFanFlatProjectionGeometry2D*>(m_pProjectionGeometry);
- const CFanFlatVecProjectionGeometry2D* pVecProjectionGeometry = dynamic_cast<CFanFlatVecProjectionGeometry2D*>(m_pProjectionGeometry);
-
- float32 old_theta, theta, alpha;
- const SFanProjection * proj = 0;
-
- //get theta
- if (pProjectionGeometry) {
- old_theta = pProjectionGeometry->getProjectionAngle(_iProjection);
- }
- else if (pVecProjectionGeometry) {
- proj = &pVecProjectionGeometry->getProjectionVectors()[_iProjection];
- old_theta = atan2(-proj->fSrcX, proj->fSrcY);
- if (old_theta < 0) old_theta += 2*PI;
- } else {
- assert(false);
- }
-
- switch_t = false;
- if (old_theta >= 7*PIdiv4) old_theta -= 2*PI;
- if (old_theta >= 3*PIdiv4) {
- old_theta -= PI;
- switch_t = true;
- }
-
- // loop detectors
- for (iDetector = 0; iDetector < m_pProjectionGeometry->getDetectorCount(); ++iDetector) {
-
- iRayIndex = _iProjection * m_pProjectionGeometry->getDetectorCount() + iDetector;
-
- // POLICY: RAY PRIOR
- if (!p.rayPrior(iRayIndex)) continue;
-
- if (pProjectionGeometry) {
- t = -pProjectionGeometry->indexToDetectorOffset(iDetector);
- alpha = atan(t / pProjectionGeometry->getSourceDetectorDistance());
- t = sin(alpha) * pProjectionGeometry->getOriginSourceDistance();
- }
- else if (pVecProjectionGeometry) {
- float32 detX = proj->fDetSX + proj->fDetUX*(0.5f + iDetector);
- float32 detY = proj->fDetSY + proj->fDetUY*(0.5f + iDetector);
- alpha = angleBetweenVectors(-proj->fSrcX, -proj->fSrcY, detX - proj->fSrcX, detY - proj->fSrcY);
- t = sin(alpha) * sqrt(proj->fSrcX*proj->fSrcX + proj->fSrcY*proj->fSrcY);
- } else {
- assert(false);
- }
-
- if (switch_t) t = -t;
- theta = old_theta + alpha;
-
- // precalculate sin, cos, 1/cos
- sin_theta = sin(theta);
- cos_theta = cos(theta);
- inv_sin_theta = 1.0f / sin_theta;
- inv_cos_theta = 1.0f / cos_theta;
-
- // precalculate kernel limits
- lengthPerRow = m_pVolumeGeometry->getPixelLengthY() * inv_cos_theta;
- updatePerRow = sin_theta * inv_cos_theta;
- inv_pixelLengthX = 1.0f / m_pVolumeGeometry->getPixelLengthX();
-
- // precalculate kernel limits
- lengthPerCol = m_pVolumeGeometry->getPixelLengthX() * inv_sin_theta;
- updatePerCol = cos_theta * inv_sin_theta;
- inv_pixelLengthY = 1.0f / m_pVolumeGeometry->getPixelLengthY();
-
- // precalculate S and T
- S = 0.5f - 0.5f * ((updatePerRow < 0) ? -updatePerRow : updatePerRow);
- T = 0.5f - 0.5f * ((updatePerCol < 0) ? -updatePerCol : updatePerCol);
-
- // vertically
- if (old_theta <= PIdiv4) {
-
- // calculate x for row 0
- P = (t - sin_theta * m_pVolumeGeometry->pixelRowToCenterY(0)) * inv_cos_theta;
- x = (P - m_pVolumeGeometry->getWindowMinX()) * inv_pixelLengthX;
-
- // for each row
- for (row = 0; row < m_pVolumeGeometry->getGridRowCount(); ++row) {
-
- // get coords
- x1 = int((x > 0.0f) ? x : x-1.0f);
- x2 = x - x1;
- x += updatePerRow;
-
- if (x1 < -1 || x1 > m_pVolumeGeometry->getGridColCount()) continue;
-
- // left
- if (x2 < 0.5f-S) {
- I = (0.5f - S + x2) / (1.0f - 2.0f*S) * lengthPerRow;
-
- if (x1-1 >= 0 /*&& x1-1 < m_pVolumeGeometry->getGridColCount()*/) {//x1 is always less than or equal to gridColCount because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1-1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerRow-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridColCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // center
- else if (x2 <= 0.5f+S) {
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridColCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerRow);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // right
- else if (x2 <= 1.0f) {
- I = (1.5f - S - x2) / (1.0f - 2.0f*S) * lengthPerRow;
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridColCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- if (/*x1+1 >= 0 &&*/ x1+1 < m_pVolumeGeometry->getGridColCount()) {//x1 is always greater than or equal to -1 because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1+1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerRow-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
- }
- }
-
- // horizontally
- else {
-
- // calculate point P
- P = (t - cos_theta * m_pVolumeGeometry->pixelColToCenterX(0)) * inv_sin_theta;
- x = (m_pVolumeGeometry->getWindowMaxY() - P) * inv_pixelLengthY;
-
- // for each col
- for (col = 0; col < m_pVolumeGeometry->getGridColCount(); ++col) {
-
- // get coords
- x1 = int((x > 0.0f) ? x : x-1.0f);
- x2 = x - x1;
- x += updatePerCol;
-
- if (x1 < -1 || x1 > m_pVolumeGeometry->getGridRowCount()) continue;
-
- // up
- if (x2 < 0.5f-T) {
- I = (0.5f - T + x2) / (1.0f - 2.0f*T) * lengthPerCol;
-
- if (x1-1 >= 0 /*&& x1-1 < m_pVolumeGeometry->getGridRowCount()*/) {//x1 is always less than or equal to gridRowCount because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1-1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerCol-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridRowCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // center
- else if (x2 <= 0.5f+T) {
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridRowCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerCol);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // down
- else if (x2 <= 1.0f) {
- I = (1.5f - T - x2) / (1.0f - 2.0f*T) * lengthPerCol;
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridRowCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- if (/*x1+1 >= 0 &&*/ x1+1 < m_pVolumeGeometry->getGridRowCount()) {//x1 is always greater than or equal to -1 because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1+1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerCol-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
- }
- } // end loop col
-
- // POLICY: RAY POSTERIOR
- p.rayPosterior(iRayIndex);
-
- } // end loop detector
-
-}
-
-//----------------------------------------------------------------------------------------
-// PROJECT SINGLE RAY
-template <typename Policy>
-void CFanFlatBeamLineKernelProjector2D::projectSingleRay(int _iProjection, int _iDetector, Policy& p)
-{
- // variables
- float32 sin_theta, cos_theta, inv_sin_theta, inv_cos_theta, S, T, t, I, P, x, x2;
- float32 lengthPerRow, updatePerRow, inv_pixelLengthX, lengthPerCol, updatePerCol, inv_pixelLengthY;
- int iVolumeIndex, iRayIndex, row, col, x1;
- bool switch_t;
-
- const CFanFlatProjectionGeometry2D* pProjectionGeometry = dynamic_cast<CFanFlatProjectionGeometry2D*>(m_pProjectionGeometry);
- const CFanFlatVecProjectionGeometry2D* pVecProjectionGeometry = dynamic_cast<CFanFlatVecProjectionGeometry2D*>(m_pProjectionGeometry);
-
- iRayIndex = _iProjection * m_pProjectionGeometry->getDetectorCount() + _iDetector;
-
- // POLICY: RAY PRIOR
- if (!p.rayPrior(iRayIndex)) return;
-
- float32 old_theta, theta, alpha;
- if (pProjectionGeometry) {
- old_theta = pProjectionGeometry->getProjectionAngle(_iProjection);
- t = -pProjectionGeometry->indexToDetectorOffset(_iDetector);
- alpha = atan(t / pProjectionGeometry->getSourceDetectorDistance());
- t = sin(alpha) * pProjectionGeometry->getOriginSourceDistance();
- }
- else if (pVecProjectionGeometry) {
- const SFanProjection * proj = &pVecProjectionGeometry->getProjectionVectors()[_iProjection];
- old_theta = atan2(-proj->fSrcX, proj->fSrcY);
- if (old_theta < 0) old_theta += 2*PI;
-
- float32 detX = proj->fDetSX + proj->fDetUX*(0.5f + _iDetector);
- float32 detY = proj->fDetSY + proj->fDetUY*(0.5f + _iDetector);
- alpha = angleBetweenVectors(-proj->fSrcX, -proj->fSrcY, detX - proj->fSrcX, detY - proj->fSrcY);
- t = sin(alpha) * sqrt(proj->fSrcX*proj->fSrcX + proj->fSrcY*proj->fSrcY);
- } else {
- assert(false);
- }
-
- switch_t = false;
- if (old_theta >= 7*PIdiv4) old_theta -= 2*PI;
- if (old_theta >= 3*PIdiv4) {
- old_theta -= PI;
- switch_t = true;
- }
- if (switch_t) t = -t;
- theta = old_theta + alpha;
-
- // precalculate sin, cos, 1/cos
- sin_theta = sin(theta);
- cos_theta = cos(theta);
- inv_sin_theta = 1.0f / sin_theta;
- inv_cos_theta = 1.0f / cos_theta;
-
- // precalculate kernel limits
- lengthPerRow = m_pVolumeGeometry->getPixelLengthY() * inv_cos_theta;
- updatePerRow = sin_theta * inv_cos_theta;
- inv_pixelLengthX = 1.0f / m_pVolumeGeometry->getPixelLengthX();
-
- // precalculate kernel limits
- lengthPerCol = m_pVolumeGeometry->getPixelLengthX() * inv_sin_theta;
- updatePerCol = cos_theta * inv_sin_theta;
- inv_pixelLengthY = 1.0f / m_pVolumeGeometry->getPixelLengthY();
-
- // precalculate S and T
- S = 0.5f - 0.5f * ((updatePerRow < 0) ? -updatePerRow : updatePerRow);
- T = 0.5f - 0.5f * ((updatePerCol < 0) ? -updatePerCol : updatePerCol);
-
- // vertically
- if (old_theta <= PIdiv4) {
-
- // calculate x for row 0
- P = (t - sin_theta * m_pVolumeGeometry->pixelRowToCenterY(0)) * inv_cos_theta;
- x = (P - m_pVolumeGeometry->getWindowMinX()) * inv_pixelLengthX;
-
- // for each row
- for (row = 0; row < m_pVolumeGeometry->getGridRowCount(); ++row) {
-
- // get coords
- x1 = int((x > 0.0f) ? x : x-1.0f);
- x2 = x - x1;
- x += updatePerRow;
-
- if (x1 < -1 || x1 > m_pVolumeGeometry->getGridColCount()) continue;
-
- // left
- if (x2 < 0.5f-S) {
- I = (0.5f - S + x2) / (1.0f - 2.0f*S) * lengthPerRow;
-
- if (x1-1 >= 0 /*&& x1-1 < m_pVolumeGeometry->getGridColCount()*/) {//x1 is always less than or equal to gridColCount because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1-1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerRow-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridColCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // center
- else if (x2 <= 0.5f+S) {
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridColCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerRow);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // right
- else if (x2 <= 1.0f) {
- I = (1.5f - S - x2) / (1.0f - 2.0f*S) * lengthPerRow;
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridColCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- if (/*x1+1 >= 0 &&*/ x1+1 < m_pVolumeGeometry->getGridColCount()) {//x1 is always greater than or equal to -1 because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(row, x1+1);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerRow-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
- }
- }
-
- // horizontally
- else {
-
- // calculate point P
- P = (t - cos_theta * m_pVolumeGeometry->pixelColToCenterX(0)) * inv_sin_theta;
- x = (m_pVolumeGeometry->getWindowMaxY() - P) * inv_pixelLengthY;
-
- // for each col
- for (col = 0; col < m_pVolumeGeometry->getGridColCount(); ++col) {
-
- // get coords
- x1 = int((x > 0.0f) ? x : x-1.0f);
- x2 = x - x1;
- x += updatePerCol;
-
- if (x1 < -1 || x1 > m_pVolumeGeometry->getGridRowCount()) continue;
-
- // up
- if (x2 < 0.5f-T) {
- I = (0.5f - T + x2) / (1.0f - 2.0f*T) * lengthPerCol;
-
- if (x1-1 >= 0 /*&& x1-1 < m_pVolumeGeometry->getGridRowCount()*/) {//x1 is always less than or equal to gridRowCount because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1-1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerCol-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridRowCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // center
- else if (x2 <= 0.5f+T) {
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridRowCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerCol);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
-
- // down
- else if (x2 <= 1.0f) {
- I = (1.5f - T - x2) / (1.0f - 2.0f*T) * lengthPerCol;
-
- if (x1 >= 0 && x1 < m_pVolumeGeometry->getGridRowCount()) {
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- if (/*x1+1 >= 0 &&*/ x1+1 < m_pVolumeGeometry->getGridRowCount()) {//x1 is always greater than or equal to -1 because of the "continue" in the beginning of the for-loop
- iVolumeIndex = m_pVolumeGeometry->pixelRowColToIndex(x1+1, col);
- // POLICY: PIXEL PRIOR + ADD + POSTERIOR
- if (p.pixelPrior(iVolumeIndex)) {
- p.addWeight(iRayIndex, iVolumeIndex, lengthPerCol-I);
- p.pixelPosterior(iVolumeIndex);
- }
- }
- }
- }
- } // end loop col
-
- // POLICY: RAY POSTERIOR
- p.rayPosterior(iRayIndex);
-}
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