/usr/include/InsightToolkit/Common/itkSobelOperator.txx is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
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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 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkSobelOperator.txx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#ifndef __itkSobelOperator_txx
#define __itkSobelOperator_txx
#include "itkSobelOperator.h"
#include "itkObject.h"
namespace itk
{
template <class TPixel, unsigned int VDimension, class TAllocator>
void
SobelOperator <TPixel, VDimension, TAllocator>
::Fill(const CoefficientVector &coeff)
{
this->InitializeToZero();
// Note that this code is only good for 2d and 3d operators. Places the
// coefficients in the exact center of the neighborhood
unsigned int i;
int x,y,z, pos;
unsigned int center = this->GetCenterNeighborhoodIndex();
if (VDimension == 3)
{
i = 0;
for (z = -1; z <= 1; z++)
{
for (y = -1; y <= 1; y++ )
{
for (x = -1; x <= 1; x++)
{
pos = center + z * this->GetStride(2) + y * this->GetStride(1) +
x * this->GetStride(0);
this->operator[](pos) = static_cast<TPixel>(coeff[i]);
i++;
}
}
}
}
else if (VDimension == 2)
{
i = 0;
for (y = -1; y <= 1; y++ )
{
for (x = -1; x <= 1; x++)
{
pos = center + y * this->GetStride(1) + x * this->GetStride(0);
this->operator[](pos) = static_cast<TPixel>(coeff[i]);
i++;
}
}
}
else
{
itkExceptionMacro( << "The ND version of the Sobel operator is not yet implemented. Currently only the 2D and 3D versions are available." );
}
}
template <class TPixel, unsigned int VDimension, class TAllocator>
typename SobelOperator<TPixel, VDimension, TAllocator>
::CoefficientVector
SobelOperator<TPixel, VDimension, TAllocator>
::GenerateCoefficients()
{
std::vector<double> coeff;
if (VDimension == 2 && this->GetDirection() == 0)
{
coeff.push_back(-1.0); coeff.push_back(0.0); coeff.push_back(1.0);
coeff.push_back(-2.0); coeff.push_back(0.0); coeff.push_back(2);
coeff.push_back(-1.0); coeff.push_back(0.0); coeff.push_back(1.0);
}
else if (VDimension == 2 && this->GetDirection() == 1)
{
coeff.push_back(-1.0); coeff.push_back(-2); coeff.push_back(-1.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(1.0); coeff.push_back(2); coeff.push_back(1.0);
}
else if (VDimension == 3 && this->GetDirection() == 0)
{
coeff.push_back(-1.0); coeff.push_back(0.0); coeff.push_back(1.0);
coeff.push_back(-3.0); coeff.push_back(0.0); coeff.push_back(3.0);
coeff.push_back(-1.0); coeff.push_back(0.0); coeff.push_back(1.0);
coeff.push_back(-3.0); coeff.push_back(0.0); coeff.push_back(3.0);
coeff.push_back(-6.0); coeff.push_back(0.0); coeff.push_back(6.0);
coeff.push_back(-3.0); coeff.push_back(0.0); coeff.push_back(3.0);
coeff.push_back(-1.0); coeff.push_back(0.0); coeff.push_back(1.0);
coeff.push_back(-3.0); coeff.push_back(0.0); coeff.push_back(3.0);
coeff.push_back(-1.0); coeff.push_back(0.0); coeff.push_back(1.0);
}
else if (VDimension == 3 && this->GetDirection() == 1)
{
coeff.push_back(-1.0); coeff.push_back(-3.0); coeff.push_back(-1.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(1.0); coeff.push_back(3.0); coeff.push_back(1.0);
coeff.push_back(-3.0); coeff.push_back(-6.0); coeff.push_back(-3.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(3.0); coeff.push_back(6.0); coeff.push_back(3.0);
coeff.push_back(-1.0); coeff.push_back(-3.0); coeff.push_back(-1.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(1.0); coeff.push_back(3.0); coeff.push_back(1.0);
}
else if (VDimension == 3 && this->GetDirection() == 2)
{
coeff.push_back(-1.0); coeff.push_back(-3.0); coeff.push_back(-1.0);
coeff.push_back(-3.0); coeff.push_back(-6.0); coeff.push_back(-3.0);
coeff.push_back(-1.0); coeff.push_back(-3.0); coeff.push_back(-1.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(0.0); coeff.push_back(0.0); coeff.push_back(0.0);
coeff.push_back(1.0); coeff.push_back(3.0); coeff.push_back(1.0);
coeff.push_back(3.0); coeff.push_back(6.0); coeff.push_back(3.0);
coeff.push_back(1.0); coeff.push_back(3.0); coeff.push_back(1.0);
}
else
{
itkExceptionMacro( << "The ND version of the Sobel operator has not been implemented. Currently only 2D and 3D versions are available." );
}
return coeff;
}
} // namespace itk
#endif
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