/usr/include/ITK-4.5/itkLevelSetVelocityNeighborhoodExtractor.hxx is in libinsighttoolkit4-dev 4.5.0-3.
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 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | /*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef __itkLevelSetVelocityNeighborhoodExtractor_hxx
#define __itkLevelSetVelocityNeighborhoodExtractor_hxx
#include "itkLevelSetVelocityNeighborhoodExtractor.h"
#include "vnl/vnl_math.h"
namespace itk
{
/**
*
*/
template< typename TLevelSet, typename TAuxValue,
unsigned int VAuxDimension >
LevelSetVelocityNeighborhoodExtractor< TLevelSet, TAuxValue, VAuxDimension >
::LevelSetVelocityNeighborhoodExtractor()
{
m_AuxInsideValues = 0;
m_AuxOutsideValues = 0;
for ( unsigned int i = 0; i < VAuxDimension; ++i )
{
m_AuxImage[i] = 0;
}
}
/*
*
*/
template< typename TLevelSet, typename TAuxValue,
unsigned int VAuxDimension >
void
LevelSetVelocityNeighborhoodExtractor< TLevelSet, TAuxValue, VAuxDimension >
::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Input aux image: [";
unsigned int j;
for ( j = 0; j + 1 < VAuxDimension; j++ )
{
os << m_AuxImage[j].GetPointer() << ", ";
}
os << m_AuxImage[j].GetPointer() << "]" << std::endl;
os << indent << "AuxInsideValues: "
<< m_AuxInsideValues.GetPointer() << std::endl;
os << indent << "AuxOutsideValues: "
<< m_AuxOutsideValues.GetPointer() << std::endl;
}
/*
*
*/
template< typename TLevelSet, typename TAuxValue,
unsigned int VAuxDimension >
void
LevelSetVelocityNeighborhoodExtractor< TLevelSet, TAuxValue, VAuxDimension >
::Initialize()
{
this->Superclass::Initialize();
// create new empty auxiliary variable containers
m_AuxInsideValues = AuxValueContainer::New();
m_AuxOutsideValues = AuxValueContainer::New();
}
/*
*
*/
template< typename TLevelSet, typename TAuxValue,
unsigned int VAuxDimension >
double
LevelSetVelocityNeighborhoodExtractor< TLevelSet, TAuxValue, VAuxDimension >
::CalculateDistance(
Index & index)
{
double distance = this->Superclass::CalculateDistance(index);
if ( distance >= this->GetLargeValue() )
{
return distance;
}
double centerValue[VAuxDimension];
AuxValueType auxPixel;
AuxValueVectorType auxVector;
for ( unsigned int k = 0; k < VAuxDimension; k++ )
{
auxPixel = m_AuxImage[k]->GetPixel(index);
centerValue[k] = (double)auxPixel;
}
// if distance is zero, insert point in inside container
if ( this->GetLastPointIsInside() )
{
for ( unsigned int k = 0; k < VAuxDimension; k++ )
{
auxVector[k] = centerValue[k];
}
m_AuxInsideValues->InsertElement(m_AuxInsideValues->Size(), auxVector);
return distance;
}
double denom = 0.0;
double numer[VAuxDimension];
typename Superclass::NodeType neighNode;
for ( unsigned int k = 0; k < VAuxDimension; k++ )
{
numer[k] = 0.0;
}
// The extend velcoity value is a weighted value of
// the speed values at point used in the computation
// of the distance by the superclass.
//
// The weights is proportional to one over the square
// of distance along the grid line to the zero set
// crossing.
for ( unsigned int j = 0; j < SetDimension; j++ )
{
neighNode = this->GetNodeUsedInCalculation(j);
if ( neighNode.GetValue() >= this->GetLargeValue() )
{
break;
}
denom += 1.0 / vnl_math_sqr( (double)neighNode.GetValue() );
for ( unsigned int k = 0; k < VAuxDimension; k++ )
{
auxPixel = m_AuxImage[k]->GetPixel( neighNode.GetIndex() );
numer[k] += (double)( auxPixel ) / vnl_math_sqr( (double)neighNode.GetValue() );
}
}
for ( unsigned int k = 0; k < VAuxDimension; k++ )
{
numer[k] /= denom;
auxVector[k] = numer[k];
}
if ( this->GetLastPointIsInside() )
{
m_AuxInsideValues->InsertElement(
m_AuxInsideValues->Size(), auxVector);
}
else
{
m_AuxOutsideValues->InsertElement(
m_AuxOutsideValues->Size(), auxVector);
}
return distance;
}
} // namespace itk
#endif
|