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
|
/*=========================================================================
Program: ITK-SNAP
Module: $RCSfile: SNAPAdvectionFieldImageFilter.txx,v $
Language: C++
Date: $Date: 2007/12/30 04:05:14 $
Version: $Revision: 1.2 $
Copyright (c) 2007 Paul A. Yushkevich
This file is part of ITK-SNAP
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-----
Copyright (c) 2003 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.
=========================================================================*/
#include "itkGradientImageFilter.h"
#include "itkMultiplyImageFilter.h"
template<class TInputImage, class TOutputValueType>
SNAPAdvectionFieldImageFilter<TInputImage,TOutputValueType>
::SNAPAdvectionFieldImageFilter()
{
m_Exponent = 0;
}
template<class TInputImage, class TOutputValueType>
void
SNAPAdvectionFieldImageFilter<TInputImage,TOutputValueType>
::GenerateData()
{
// Get the input and output pointers
typename InputImageType::ConstPointer imgInput = this->GetInput();
typename OutputImageType::Pointer imgOutput = this->GetOutput();
// Allocate the output image
imgOutput->SetBufferedRegion(imgOutput->GetRequestedRegion());
imgOutput->Allocate();
// Create a new gradient filter
typedef itk::GradientImageFilter<
InputImageType,TOutputValueType,TOutputValueType> GradientFilter;
typename GradientFilter::Pointer fltGradient = GradientFilter::New();
fltGradient->SetInput(imgInput);
fltGradient->ReleaseDataFlagOn();
// A pointer to the pipeline tail
typename itk::ImageSource<OutputImageType>::Pointer
fltPipeEnd = fltGradient.GetPointer();
// Attach the appropriate number of multiplicative filters
typedef itk::MultiplyImageFilter<
OutputImageType,InputImageType,OutputImageType> MultiplyFilter;
for(unsigned int i=0;i<m_Exponent;i++)
{
typename MultiplyFilter::Pointer fltMulti = MultiplyFilter::New();
fltMulti->SetInput1(fltPipeEnd->GetOutput());
fltMulti->SetInput2(imgInput);
fltMulti->ReleaseDataFlagOn();
fltPipeEnd = fltMulti;
}
// Call the filter's GenerateData()
fltPipeEnd->GraftOutput(imgOutput);
fltPipeEnd->Update();
// graft the mini-pipeline output back onto this filter's output.
// this is needed to get the appropriate regions passed back.
this->GraftOutput( fltPipeEnd->GetOutput() );
}
template<class TInputImage, class TOutputValueType>
void
SNAPAdvectionFieldImageFilter<TInputImage,TOutputValueType>
::PrintSelf(std::ostream& os, itk::Indent indent) const
{
Superclass::PrintSelf(os,indent);
}
|
