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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkGrayscaleErodeImageFilter.txx,v $
Language: C++
Date: $Date: 2004-04-30 21:02:03 $
Version: $Revision: 1.13 $
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 __itkGrayscaleErodeImageFilter_txx
#define __itkGrayscaleErodeImageFilter_txx
#include "itkGrayscaleErodeImageFilter.h"
namespace itk {
template<class TInputImage, class TOutputImage, class TKernel>
GrayscaleErodeImageFilter<TInputImage, TOutputImage, TKernel>
::GrayscaleErodeImageFilter()
{
m_ErodeBoundaryCondition.SetConstant( NumericTraits<PixelType>::max() );
this->OverrideBoundaryCondition( &m_ErodeBoundaryCondition );
}
template<class TInputImage, class TOutputImage, class TKernel>
typename GrayscaleErodeImageFilter<TInputImage, TOutputImage, TKernel>::PixelType
GrayscaleErodeImageFilter<TInputImage, TOutputImage, TKernel>
::Evaluate(const NeighborhoodIteratorType &nit,
const KernelIteratorType kernelBegin,
const KernelIteratorType kernelEnd)
{
unsigned int i;
PixelType min = NumericTraits<PixelType>::max() ;
PixelType temp;
KernelIteratorType kernel_it;
for (i=0, kernel_it=kernelBegin; kernel_it<kernelEnd; ++kernel_it, ++i)
{
// if structuring element is positive, use the pixel under that element
// in the image
if (*kernel_it > 0)
{
// note we use GetPixel() on the NeighborhoodIterator in order
// to respect boundary conditions.
temp = nit.GetPixel(i);
if (temp < min)
min = temp ;
}
}
return min ;
}
}// end namespace itk
#endif
|
