/usr/include/vtk-6.3/vtkImageBSplineInternals.h is in libvtk6-dev 6.3.0+dfsg1-11build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkImageBSplineInternals.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkImageBSplineInternals - BSpline code from P. Thevenaz
// .SECTION Description
// 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.
#ifndef vtkImageBSplineInternals_h
#define vtkImageBSplineInternals_h
#include "vtkImagingCoreModule.h" // For export macro
#include "vtkSystemIncludes.h"
class VTKIMAGINGCORE_EXPORT vtkImageBSplineInternals
{
public:
// Description:
// 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 int GetPoleValues(double poles[4], long &numPoles, long degree);
// Description:
// Internal method. Compute the coefficients for one row of data.
static void ConvertToInterpolationCoefficients(
double data[], long size, long border, double poles[4], long numPoles,
double tol);
// Description:
// 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 GetInterpolationWeights(
double weights[10], double w, long degree);
static int GetInterpolationWeights(
float weights[10], double w, long degree);
// Description:
// Internal method. Interpolate a value from the supplied 3D array
// of coefficients with dimensions width x height x slices.
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:
vtkImageBSplineInternals() {}
~vtkImageBSplineInternals() {}
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);
private:
vtkImageBSplineInternals(const vtkImageBSplineInternals&); // Not implemented.
void operator=(const vtkImageBSplineInternals&); // Not implemented.
};
#endif
// VTK-HeaderTest-Exclude: vtkImageBSplineInternals.h
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