/usr/include/InsightToolkit/Common/itkImageRandomNonRepeatingConstIteratorWithIndex.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 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkImageRandomNonRepeatingConstIteratorWithIndex.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 __itkImageRandomNonRepeatingConstIteratorWithIndex_txx
#define __itkImageRandomNonRepeatingConstIteratorWithIndex_txx
#include "itkImageRandomNonRepeatingConstIteratorWithIndex.h"
namespace itk
{
/** Default constructor. Needed since we provide a cast constructor. */
template<class TImage>
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::ImageRandomNonRepeatingConstIteratorWithIndex() : ImageConstIteratorWithIndex<TImage>()
{
m_NumberOfPixelsInRegion = 0L;
m_NumberOfSamplesRequested = 0L;
m_NumberOfSamplesDone = 0L;
m_Permutation=NULL;
}
/** Constructor establishes an iterator to walk a particular image and a
* particular region of that image. */
template<class TImage>
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::ImageRandomNonRepeatingConstIteratorWithIndex(const ImageType *ptr, const RegionType& region)
: ImageConstIteratorWithIndex<TImage>( ptr, region )
{
m_NumberOfPixelsInRegion = region.GetNumberOfPixels();
m_NumberOfSamplesRequested = 0L;
m_NumberOfSamplesDone = 0L;
m_Permutation=new RandomPermutation(m_NumberOfPixelsInRegion);
}
/** Set the number of samples to extract from the region */
template<class TImage>
void
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::SetNumberOfSamples( unsigned long number )
{
m_NumberOfSamplesRequested = number;
if(number>m_NumberOfPixelsInRegion) m_NumberOfSamplesRequested=m_NumberOfPixelsInRegion;
}
/** Set the number of samples to extract from the region */
template<class TImage>
unsigned long
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::GetNumberOfSamples( void ) const
{
return m_NumberOfSamplesRequested;
}
/** Reinitialize the seed of the random number generator */
template<class TImage>
void
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::ReinitializeSeed()
{
this->m_Permutation->ReinitializeSeed();
this->m_Permutation->Shuffle();
}
template<class TImage>
void
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::ReinitializeSeed(int seed)
{
this->m_Permutation->ReinitializeSeed(seed);
this->m_Permutation->Shuffle();
}
/** update the position */
template<class TImage>
void
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::SetPriorityImage(const PriorityImageType* priorityImage)
{
// should probably do error checking to be sure that the priority
// image is the right size
IndexType positionIndex;
unsigned long position,pixel;
unsigned long residual;
for(pixel=0;pixel<m_NumberOfPixelsInRegion;pixel++)
{
position=pixel;
for( unsigned int dim = 0; dim < TImage::ImageDimension; dim++ )
{
const unsigned long sizeInThisDimension = this->m_Region.GetSize()[dim];
residual = position % sizeInThisDimension;
positionIndex[dim] = residual + this->m_BeginIndex[dim];
position -= residual;
position /= sizeInThisDimension;
}
//std::cout<<pixel<<" "<<positionIndex<<" "<<priorityImage->GetPixel(positionIndex)std::endl;
this->m_Permutation->SetPriority(pixel,priorityImage->GetPixel(positionIndex));
}
this->m_Permutation->Shuffle();
}
/** update the position */
template<class TImage>
void
ImageRandomNonRepeatingConstIteratorWithIndex<TImage>
::UpdatePosition()
{
unsigned long position = (*(this->m_Permutation))[m_NumberOfSamplesDone%m_NumberOfSamplesRequested];
unsigned long residual;
for( unsigned int dim = 0; dim < TImage::ImageDimension; dim++ )
{
const unsigned long sizeInThisDimension = this->m_Region.GetSize()[dim];
residual = position % sizeInThisDimension;
this->m_PositionIndex[dim] = residual + this->m_BeginIndex[dim];
position -= residual;
position /= sizeInThisDimension;
}
this->m_Position = this->m_Image->GetBufferPointer() + this->m_Image->ComputeOffset( this->m_PositionIndex );
}
} // end namespace itk
#endif
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