void QmitkTbssRoiAnalysisWidget::DoPlotFiberBundles(mitk::FiberBundle *fib, mitk::Image* img, mitk::DataNode* startRoi, mitk::DataNode* endRoi, bool avg, int number) { TractContainerType tracts = CreateTracts(fib, startRoi, endRoi); TractContainerType resampledTracts = ParameterizeTracts(tracts, number); // Now we have the resampled tracts. Next we should use these points to read out the values mitkPixelTypeMultiplex3(PlotFiberBundles,img->GetImageDescriptor()->GetChannelTypeById(0),resampledTracts, img, avg); m_CurrentTracts = resampledTracts; }
std::vector< std::vector<mitk::ScalarType> > QmitkTbssRoiAnalysisWidget::CalculateGroupProfilesFibers(mitk::TbssImage::Pointer tbssImage, mitk::FiberBundle *fib, mitk::DataNode* startRoi, mitk::DataNode* endRoi, int number) { TractContainerType tracts = CreateTracts(fib, startRoi, endRoi); TractContainerType resampledTracts = ParameterizeTracts(tracts, number); int nTracts = resampledTracts.size(); this->Clear(); // For every group we have m fibers * n subjects of profiles to fill std::vector< std::vector<mitk::ScalarType> > profiles; // calculate individual profiles by going through all n subjects int size = m_Projections->GetVectorLength(); for(int s=0; s<size; s++) { // Iterate through all tracts for(int t=0; t<nTracts; t++) { // Iterate trough the tract std::vector<mitk::ScalarType> profile; TractType::iterator it = resampledTracts[t].begin(); while(it != resampledTracts[t].end()) { PointType p = *it; PointType index; tbssImage->GetGeometry()->WorldToIndex(p, index); itk::Index<3> ix; ix[0] = index[0]; ix[1] = index[1]; ix[2] = index[2]; // Get value from image profile.push_back(m_Projections->GetPixel(ix).GetElement(s)); it++; } profiles.push_back(profile); } } m_IndividualProfiles = profiles; // Now create the group averages (every group contains m fibers * n_i group members std::vector< std::pair<std::string, int> >::iterator it; it = m_Groups.begin(); int c = 0; //the current profile number // Calculate the group averages std::vector< std::vector<mitk::ScalarType> > groupProfiles; while(it != m_Groups.end() && profiles.size() > 0) { std::pair<std::string, int> p = *it; int size = p.second; //initialize a vector of the right length with zeroes std::vector<mitk::ScalarType> averageProfile; for(unsigned int i=0; i<profiles.at(0).size(); i++) { averageProfile.push_back(0.0); } // Average the right number of profiles for(int i=0; i<size*nTracts; i++) { for(unsigned int j=0; j<averageProfile.size(); ++j) { averageProfile.at(j) = averageProfile.at(j) + profiles.at(c).at(j); } c++; } // Divide by the number of profiles to get group average for(unsigned int i=0; i<averageProfile.size(); i++) { averageProfile.at(i) = averageProfile.at(i) / (size*nTracts); } groupProfiles.push_back(averageProfile); ++it; } return groupProfiles; }
void QmitkTbssRoiAnalysisWidget::DoPlotFiberBundles(mitk::FiberBundleX *fib, mitk::Image* img, mitk::PlanarFigure* startRoi, mitk::PlanarFigure* endRoi, bool avg, int number) { mitk::Geometry3D* currentGeometry = fib->GetGeometry(); mitk::PlaneGeometry* startGeometry2D = dynamic_cast<mitk::PlaneGeometry*>( const_cast<mitk::Geometry2D*>(startRoi->GetGeometry2D()) ); mitk::PlaneGeometry* endGeometry2D = dynamic_cast<mitk::PlaneGeometry*>( const_cast<mitk::Geometry2D*>(endRoi->GetGeometry2D()) ); mitk::Point3D startCenter = startRoi->GetWorldControlPoint(0); //center Point of start roi mitk::Point3D endCenter = endRoi->GetWorldControlPoint(0); //center Point of end roi mitk::FiberBundleX::Pointer inStart = fib->ExtractFiberSubset(startRoi); mitk::FiberBundleX::Pointer inBoth = inStart->ExtractFiberSubset(endRoi); int num = inBoth->GetNumFibers(); TractContainerType tracts; vtkSmartPointer<vtkPolyData> fiberPolyData = inBoth->GetFiberPolyData(); vtkCellArray* lines = fiberPolyData->GetLines(); lines->InitTraversal(); // Now find out for each fiber which ROI is encountered first. If this is the startRoi, the direction is ok // Otherwise the plot should be in the reverse direction for( int fiberID( 0 ); fiberID < num; fiberID++ ) { vtkIdType numPointsInCell(0); vtkIdType* pointsInCell(NULL); lines->GetNextCell ( numPointsInCell, pointsInCell ); int startId = 0; int endId = 0; float minDistStart = std::numeric_limits<float>::max(); float minDistEnd = std::numeric_limits<float>::max(); for( int pointInCellID( 0 ); pointInCellID < numPointsInCell ; pointInCellID++) { double *p = fiberPolyData->GetPoint( pointsInCell[ pointInCellID ] ); mitk::Point3D point; point[0] = p[0]; point[1] = p[1]; point[2] = p[2]; float distanceToStart = point.EuclideanDistanceTo(startCenter); float distanceToEnd = point.EuclideanDistanceTo(endCenter); if(distanceToStart < minDistStart) { minDistStart = distanceToStart; startId = pointInCellID; } if(distanceToEnd < minDistEnd) { minDistEnd = distanceToEnd; endId = pointInCellID; } } /* We found the start and end points of of the part that should be plottet for the current fiber. now we need to plot them. If the endId is smaller than the startId the plot order must be reversed*/ TractType singleTract; PointType point; if(startId < endId) { // Calculate the intersection of the ROI with the startRoi and decide if the startId is part of the roi or must be cut of double *p = fiberPolyData->GetPoint( pointsInCell[ startId ] ); mitk::Vector3D p0; p0[0] = p[0]; p0[1] = p[1]; p0[2] = p[2]; p = fiberPolyData->GetPoint( pointsInCell[ startId+1 ] ); mitk::Vector3D p1; p1[0] = p[0]; p1[1] = p[1]; p1[2] = p[2]; // Check if p and p2 are both on the same side of the plane mitk::Vector3D normal = startGeometry2D->GetNormal(); mitk::Point3D pStart; pStart[0] = p0[0]; pStart[1] = p0[1]; pStart[2] = p0[2]; mitk::Point3D pSecond; pSecond[0] = p1[0]; pSecond[1] = p1[1]; pSecond[2] = p1[2]; bool startOnPositive = startGeometry2D->IsAbove(pStart); bool secondOnPositive = startGeometry2D->IsAbove(pSecond); mitk::Vector3D onPlane; onPlane[0] = startCenter[0]; onPlane[1] = startCenter[1]; onPlane[2] = startCenter[2]; if(! (secondOnPositive ^ startOnPositive) ) { /* startId and startId+1 lie on the same side of the plane, so we need need startId-1 to calculate the intersection with the planar figure*/ p = fiberPolyData->GetPoint( pointsInCell[ startId-1 ] ); p1[0] = p[0]; p1[1] = p[1]; p1[2] = p[2]; } double d = ( (onPlane-p0)*normal) / ( (p0-p1) * normal ); mitk::Vector3D newPoint = (p0-p1); point[0] = d*newPoint[0] + p0[0]; point[1] = d*newPoint[1] + p0[1]; point[2] = d*newPoint[2] + p0[2]; singleTract.push_back(point); if(! (secondOnPositive ^ startOnPositive) ) { /* StartId and startId+1 lie on the same side of the plane so startId is also part of the ROI*/ double *start = fiberPolyData->GetPoint( pointsInCell[startId] ); point[0] = start[0]; point[1] = start[1]; point[2] = start[2]; singleTract.push_back(point); } for( int pointInCellID( startId+1 ); pointInCellID < endId ; pointInCellID++) { // push back point double *p = fiberPolyData->GetPoint( pointsInCell[ pointInCellID ] ); point[0] = p[0]; point[1] = p[1]; point[2] = p[2]; singleTract.push_back( point ); } /* endId must be included if endId and endId-1 lie on the same side of the plane defined by endRoi*/ p = fiberPolyData->GetPoint( pointsInCell[ endId ] ); p0[0] = p[0]; p0[1] = p[1]; p0[2] = p[2]; p = fiberPolyData->GetPoint( pointsInCell[ endId-1 ] ); p1[0] = p[0]; p1[1] = p[1]; p1[2] = p[2]; mitk::Point3D pLast; pLast[0] = p0[0]; pLast[1] = p0[1]; pLast[2] = p0[2]; mitk::Point3D pBeforeLast; pBeforeLast[0] = p1[0]; pBeforeLast[1] = p1[1]; pBeforeLast[2] = p1[2]; normal = endGeometry2D->GetNormal(); bool lastOnPositive = endGeometry2D->IsAbove(pLast); bool secondLastOnPositive = endGeometry2D->IsAbove(pBeforeLast); onPlane[0] = endCenter[0]; onPlane[1] = endCenter[1]; onPlane[2] = endCenter[2]; if(! (lastOnPositive ^ secondLastOnPositive) ) { /* endId and endId-1 lie on the same side of the plane, so we need need endId+1 to calculate the intersection with the planar figure. this should exist since we know that the fiber crosses the planar figure endId is also part of the tract and can be inserted here */ p = fiberPolyData->GetPoint( pointsInCell[ endId ] ); point[0] = p[0]; point[1] = p[1]; point[2] = p[2]; singleTract.push_back( point ); p = fiberPolyData->GetPoint( pointsInCell[ endId+1 ] ); } d = ( (onPlane-p0)*normal) / ( (p0-p1) * normal ); newPoint = (p0-p1); point[0] = d*newPoint[0] + p0[0]; point[1] = d*newPoint[1] + p0[1]; point[2] = d*newPoint[2] + p0[2]; singleTract.push_back(point); } else{ // Calculate the intersection of the ROI with the startRoi and decide if the startId is part of the roi or must be cut of double *p = fiberPolyData->GetPoint( pointsInCell[ startId ] ); mitk::Vector3D p0; p0[0] = p[0]; p0[1] = p[1]; p0[2] = p[2]; p = fiberPolyData->GetPoint( pointsInCell[ startId-1 ] ); mitk::Vector3D p1; p1[0] = p[0]; p1[1] = p[1]; p1[2] = p[2]; // Check if p and p2 are both on the same side of the plane mitk::Vector3D normal = startGeometry2D->GetNormal(); mitk::Point3D pStart; pStart[0] = p0[0]; pStart[1] = p0[1]; pStart[2] = p0[2]; mitk::Point3D pSecond; pSecond[0] = p1[0]; pSecond[1] = p1[1]; pSecond[2] = p1[2]; bool startOnPositive = startGeometry2D->IsAbove(pStart); bool secondOnPositive = startGeometry2D->IsAbove(pSecond); mitk::Vector3D onPlane; onPlane[0] = startCenter[0]; onPlane[1] = startCenter[1]; onPlane[2] = startCenter[2]; if(! (secondOnPositive ^ startOnPositive) ) { /* startId and startId+1 lie on the same side of the plane, so we need need startId-1 to calculate the intersection with the planar figure*/ p = fiberPolyData->GetPoint( pointsInCell[ startId-1 ] ); p1[0] = p[0]; p1[1] = p[1]; p1[2] = p[2]; } double d = ( (onPlane-p0)*normal) / ( (p0-p1) * normal ); mitk::Vector3D newPoint = (p0-p1); point[0] = d*newPoint[0] + p0[0]; point[1] = d*newPoint[1] + p0[1]; point[2] = d*newPoint[2] + p0[2]; singleTract.push_back(point); if(! (secondOnPositive ^ startOnPositive) ) { /* StartId and startId+1 lie on the same side of the plane so startId is also part of the ROI*/ double *start = fiberPolyData->GetPoint( pointsInCell[startId] ); point[0] = start[0]; point[1] = start[1]; point[2] = start[2]; singleTract.push_back(point); } for( int pointInCellID( startId-1 ); pointInCellID > endId ; pointInCellID--) { // push back point double *p = fiberPolyData->GetPoint( pointsInCell[ pointInCellID ] ); point[0] = p[0]; point[1] = p[1]; point[2] = p[2]; singleTract.push_back( point ); } /* endId must be included if endId and endI+1 lie on the same side of the plane defined by endRoi*/ p = fiberPolyData->GetPoint( pointsInCell[ endId ] ); p0[0] = p[0]; p0[1] = p[1]; p0[2] = p[2]; p = fiberPolyData->GetPoint( pointsInCell[ endId+1 ] ); p1[0] = p[0]; p1[1] = p[1]; p1[2] = p[2]; mitk::Point3D pLast; pLast[0] = p0[0]; pLast[1] = p0[1]; pLast[2] = p0[2]; mitk::Point3D pBeforeLast; pBeforeLast[0] = p1[0]; pBeforeLast[1] = p1[1]; pBeforeLast[2] = p1[2]; bool lastOnPositive = endGeometry2D->IsAbove(pLast); bool secondLastOnPositive = endGeometry2D->IsAbove(pBeforeLast); normal = endGeometry2D->GetNormal(); onPlane[0] = endCenter[0]; onPlane[1] = endCenter[1]; onPlane[2] = endCenter[2]; if(! (lastOnPositive ^ secondLastOnPositive) ) { /* endId and endId+1 lie on the same side of the plane, so we need need endId-1 to calculate the intersection with the planar figure. this should exist since we know that the fiber crosses the planar figure endId is also part of the tract and can be inserted here */ p = fiberPolyData->GetPoint( pointsInCell[ endId ] ); point[0] = p[0]; point[1] = p[1]; point[2] = p[2]; singleTract.push_back( point ); p = fiberPolyData->GetPoint( pointsInCell[ endId-1 ] ); } d = ( (onPlane-p0)*normal) / ( (p0-p1) * normal ); newPoint = (p0-p1); point[0] = d*newPoint[0] + p0[0]; point[1] = d*newPoint[1] + p0[1]; point[2] = d*newPoint[2] + p0[2]; singleTract.push_back(point); } tracts.push_back(singleTract); } //todo: Make number of samples selectable by user TractContainerType resampledTracts = ParameterizeTracts(tracts, number); // Now we have the resampled tracts. Next we should use these points to read out the values PlotFiberBundles(resampledTracts, img, avg); m_CurrentTracts = resampledTracts; }