vtkImageBSplineInternals Class Reference

BSpline code from P. Thevenaz. More...

#include <vtkImageBSplineInternals.h>

List of all members.

Static Public Member Functions
static int	GetPoleValues (double poles[4], long &numPoles, long degree)
static void	ConvertToInterpolationCoefficients (double data[], long size, long border, double poles[4], long numPoles, double tol)
static int	GetInterpolationWeights (double weights[10], double w, long degree)
static int	GetInterpolationWeights (float weights[10], double w, long degree)
static int	InterpolatedValue (const double *coeffs, double *value, long width, long height, long slices, long depth, double x, double y, double z, long degree, long border)
static int	InterpolatedValue (const float *coeffs, float *value, long width, long height, long slices, long depth, double x, double y, double z, long degree, long border)
Protected Member Functions
	vtkImageBSplineInternals ()
	~vtkImageBSplineInternals ()
Static Protected Member Functions
static double	InitialCausalCoefficient (double data[], long size, long border, double pole, double tol)
static double	InitialAntiCausalCoefficient (double data[], long size, long border, double pole, double tol)

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Detailed Description

BSpline code from P. Thevenaz.

vtkImageBSplineInternals provides code for image interpolation with b-splines of various degrees. This code computes the coefficents from the image, and computes the weights for the b-spline kernels.

This class is based on code provided by Philippe Thevenaz of EPFL, Lausanne, Switzerland. Please acknowledge his contribution by citing the following paper: [1] P. Thevenaz, T. Blu, M. Unser, "Interpolation Revisited," IEEE Transactions on Medical Imaging 19(7):739-758, 2000.

The clamped boundary condition (which is the default) is taken from code presented in the following paper: [2] D. Ruijters, P. Thevenaz, "GPU Prefilter for Accurate Cubic B-spline Interpolation," The Computer Journal, doi: 10.1093/comjnl/bxq086, 2010.

Definition at line 40 of file vtkImageBSplineInternals.h.

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Constructor & Destructor Documentation

vtkImageBSplineInternals::vtkImageBSplineInternals

(

)

[inline, protected]

Definition at line 78 of file vtkImageBSplineInternals.h.

vtkImageBSplineInternals::~vtkImageBSplineInternals

(

)

[inline, protected]

Definition at line 79 of file vtkImageBSplineInternals.h.

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Member Function Documentation

static int vtkImageBSplineInternals::GetPoleValues	(	double	poles[4],
		long &	numPoles,
		long	degree
	)		[static]

Internal method. Get the poles for spline of given degree. Returns zero if an illegal degree is given (allowed range 2 to 9). The parameter numPoles will be set to a value between 1 and 4.

static void vtkImageBSplineInternals::ConvertToInterpolationCoefficients	(	double	data[],
		long	size,
		long	border,
		double	poles[4],
		long	numPoles,
		double	tol
	)		[static]

Internal method. Compute the coefficients for one row of data.

static int vtkImageBSplineInternals::GetInterpolationWeights	(	double	weights[10],
		double	w,
		long	degree
	)		[static]

Internal method. Get interpolation weights for offset w, where w is between 0 and 1. You must provide the degree of the spline.

static int vtkImageBSplineInternals::GetInterpolationWeights	(	float	weights[10],
		double	w,
		long	degree
	)		[static]

Internal method. Get interpolation weights for offset w, where w is between 0 and 1. You must provide the degree of the spline.

static int vtkImageBSplineInternals::InterpolatedValue	(	const double *	coeffs,
		double *	value,
		long	width,
		long	height,
		long	slices,
		long	depth,
		double	x,
		double	y,
		double	z,
		long	degree,
		long	border
	)		[static]

Internal method. Interpolate a value from the supplied 3D array of coefficients with dimensions width x height x slices.

static int vtkImageBSplineInternals::InterpolatedValue	(	const float *	coeffs,
		float *	value,
		long	width,
		long	height,
		long	slices,
		long	depth,
		double	x,
		double	y,
		double	z,
		long	degree,
		long	border
	)		[static]

Internal method. Interpolate a value from the supplied 3D array of coefficients with dimensions width x height x slices.

static double vtkImageBSplineInternals::InitialCausalCoefficient	(	double	data[],
		long	size,
		long	border,
		double	pole,
		double	tol
	)		[static, protected]

static double vtkImageBSplineInternals::InitialAntiCausalCoefficient	(	double	data[],
		long	size,
		long	border,
		double	pole,
		double	tol
	)		[static, protected]

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The documentation for this class was generated from the following file:

• dox/Filtering/vtkImageBSplineInternals.h