Ejemplo n.º 1
0
static IntensityProfile::Pointer ComputeIntensityProfile(Image::Pointer image, itk::PolyLineParametricPath<3>::Pointer path)
{
  IntensityProfile::Pointer intensityProfile = IntensityProfile::New();
  itk::PolyLineParametricPath<3>::InputType input = path->StartOfInput();
  BaseGeometry* imageGeometry = image->GetGeometry();
  const PixelType pixelType = image->GetPixelType();

  IntensityProfile::MeasurementVectorType measurementVector;
  itk::PolyLineParametricPath<3>::OffsetType offset;
  Point3D worldPoint;
  itk::Index<3> index;

  do
  {
    imageGeometry->IndexToWorld(path->Evaluate(input), worldPoint);
    imageGeometry->WorldToIndex(worldPoint, index);

    mitkPixelTypeMultiplex3(ReadPixel, pixelType, image, index, measurementVector.GetDataPointer());
    intensityProfile->PushBack(measurementVector);

    offset = path->IncrementInput(input);
  } while ((offset[0] | offset[1] | offset[2]) != 0);

  return intensityProfile;
}
Ejemplo n.º 2
0
bool mitk::SegTool2D::DetermineAffectedImageSlice( const Image* image, const PlaneGeometry* plane, int& affectedDimension, int& affectedSlice )
{
  assert(image);
  assert(plane);

  // compare normal of plane to the three axis vectors of the image
  Vector3D normal       = plane->GetNormal();
  Vector3D imageNormal0 = image->GetSlicedGeometry()->GetAxisVector(0);
  Vector3D imageNormal1 = image->GetSlicedGeometry()->GetAxisVector(1);
  Vector3D imageNormal2 = image->GetSlicedGeometry()->GetAxisVector(2);

  normal.Normalize();
  imageNormal0.Normalize();
  imageNormal1.Normalize();
  imageNormal2.Normalize();

  imageNormal0.SetVnlVector( vnl_cross_3d<ScalarType>(normal.GetVnlVector(),imageNormal0.GetVnlVector()) );
  imageNormal1.SetVnlVector( vnl_cross_3d<ScalarType>(normal.GetVnlVector(),imageNormal1.GetVnlVector()) );
  imageNormal2.SetVnlVector( vnl_cross_3d<ScalarType>(normal.GetVnlVector(),imageNormal2.GetVnlVector()) );

  double eps( 0.00001 );
  // axial
  if ( imageNormal2.GetNorm() <= eps )
  {
    affectedDimension = 2;
  }
  // sagittal
  else if ( imageNormal1.GetNorm() <= eps )
  {
    affectedDimension = 1;
  }
  // frontal
  else if ( imageNormal0.GetNorm() <= eps )
  {
    affectedDimension = 0;
  }
  else
  {
    affectedDimension = -1; // no idea
    return false;
  }

  // determine slice number in image
  BaseGeometry* imageGeometry = image->GetGeometry(0);
  Point3D testPoint = imageGeometry->GetCenter();
  Point3D projectedPoint;
  plane->Project( testPoint, projectedPoint );

  Point3D indexPoint;

  imageGeometry->WorldToIndex( projectedPoint, indexPoint );
  affectedSlice = ROUND( indexPoint[affectedDimension] );
  MITK_DEBUG << "indexPoint " << indexPoint << " affectedDimension " << affectedDimension << " affectedSlice " << affectedSlice;

  // check if this index is still within the image
  if ( affectedSlice < 0 || affectedSlice >= static_cast<int>(image->GetDimension(affectedDimension)) ) return false;

  return true;
}