mitk::StaticIGTHelperFunctions Namespace Reference

Functions
MITKIGTBASE_EXPORT double	GetAngleBetweenTwoQuaterions (mitk::Quaternion a, mitk::Quaternion b, itk::Vector< double, 3 > rotationVector)
MITKIGTBASE_EXPORT double	GetAngleBetweenTwoQuaterions (mitk::Quaternion a, mitk::Quaternion b)
MITKIGTBASE_EXPORT itk::Matrix< double, 3, 3 >	ConvertEulerAnglesToRotationMatrix (double alpha, double beta, double gamma)
MITKIGTBASE_EXPORT double	ComputeFRE (mitk::PointSet::Pointer imageFiducials, mitk::PointSet::Pointer realWorldFiducials, vtkSmartPointer< vtkLandmarkTransform > transform=nullptr)
	Computes the fiducial registration error out of two sets of fiducials. The two sets must have the same size and the points must correspond to each other. More...

Function Documentation

ComputeFRE()

MITKIGTBASE_EXPORT double mitk::StaticIGTHelperFunctions::ComputeFRE	(	mitk::PointSet::Pointer	imageFiducials,
		mitk::PointSet::Pointer	realWorldFiducials,
		vtkSmartPointer< vtkLandmarkTransform >	transform = nullptr
	)

Computes the fiducial registration error out of two sets of fiducials. The two sets must have the same size and the points must correspond to each other.

Parameters

imageFiducials
realWorldFiducials
transform	This transform is applied to the image fiducials before the FRE calculation if it is given.

Returns

Returns the FRE. Returns -1 if there was an error.

ConvertEulerAnglesToRotationMatrix()

MITKIGTBASE_EXPORT itk::Matrix<double,3,3> mitk::StaticIGTHelperFunctions::ConvertEulerAnglesToRotationMatrix	(	double	alpha,
		double	beta,
		double	gamma
	)

Converts euler angles (in degrees) to a rotation matrix.

GetAngleBetweenTwoQuaterions() [1/2]

MITKIGTBASE_EXPORT double mitk::StaticIGTHelperFunctions::GetAngleBetweenTwoQuaterions	(	mitk::Quaternion	a,
		mitk::Quaternion	b
	)

Computes difference between two quaternions in degree, which is the minimum rotation angle between these two quaternions. The used formula is described here: https://fgiesen.wordpress.com/2013/01/07/small-note-on-quaternion-distance-metrics/

Returns

Returns the angle in degrees.

GetAngleBetweenTwoQuaterions() [2/2]

MITKIGTBASE_EXPORT double mitk::StaticIGTHelperFunctions::GetAngleBetweenTwoQuaterions	(	mitk::Quaternion	a,
		mitk::Quaternion	b,
		itk::Vector< double, 3 >	rotationVector
	)

Computes the angle in the plane perpendicular to the rotation axis of the two quaterions. Therefore, a vector is rotated with the difference of both rotations and the angle is computed. In some cases you might want to define this vector e.g., if working with 5D tools. For NDI Aurora 5D tools you need to defined this vector along the Z-axis.

Returns

Returns the angle in degrees.