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
|
/*=========================================================================
*
* 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 itkIterativeInverseDisplacementFieldImageFilter_h
#define itkIterativeInverseDisplacementFieldImageFilter_h
#include "itkWarpVectorImageFilter.h"
#include "itkImageRegionIterator.h"
#include "itkTimeProbe.h"
namespace itk
{
/** \class IterativeInverseDisplacementFieldImageFilter
* \brief Computes the inverse of a displacement field.
*
* IterativeInverseDisplacementFieldImageFilter takes a displacement field as input and
* computes the displacement field that is its inverse. If the input displacement
* field was mapping coordinates from a space A into a space B, the output of
* this filter will map coordinates from the space B into the space A.
*
* The algorithm implemented in this filter uses an iterative method for
* progresively refining the values of the inverse field. Starting from the
* direct field, at every pixel the direct mapping of this point is found, and
* a the nevative of the current displacement is stored in the inverse field at
* the nearest pixel. Then, subsequent iterations verify if any of the neigbor pixels
* provide a better return to the current pixel, in which case its value is taken for
* updating the vector in the inverse field.
*
* This method was discussed in the users-list during February 2004.
*
* \author Corinne Mattmann
*
* \ingroup ITKDisplacementField
*/
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_EXPORT IterativeInverseDisplacementFieldImageFilter:
public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard class typedefs. */
typedef IterativeInverseDisplacementFieldImageFilter Self;
typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(IterativeInverseDisplacementFieldImageFilter, ImageToImageFilter);
/** Some typedefs. */
typedef TInputImage InputImageType;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::PointType InputImagePointType;
typedef typename InputImageType::RegionType InputImageRegionType;
typedef typename InputImageType::SpacingType InputImageSpacingType;
typedef TOutputImage OutputImageType;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename OutputImageType::PixelType OutputImagePixelType;
typedef typename OutputImageType::PointType OutputImagePointType;
typedef typename OutputImageType::IndexType OutputImageIndexType;
typedef typename OutputImagePixelType::ValueType OutputImageValueType;
typedef TimeProbe TimeType;
typedef ImageRegionConstIterator< InputImageType > InputConstIterator;
typedef ImageRegionIterator< InputImageType > InputIterator;
typedef ImageRegionIterator< OutputImageType > OutputIterator;
typedef WarpVectorImageFilter< TOutputImage, TInputImage, TOutputImage > VectorWarperType;
typedef VectorLinearInterpolateImageFunction< TInputImage, double > FieldInterpolatorType;
typedef typename FieldInterpolatorType::Pointer FieldInterpolatorPointer;
typedef typename FieldInterpolatorType::OutputType FieldInterpolatorOutputType;
itkSetMacro(NumberOfIterations, unsigned int);
itkGetConstMacro(NumberOfIterations, unsigned int);
// If the error (in mm) between forward and backward mapping is smaller than
// the StopValue,
// the algorithm stops.
// This value can be used to speed up the calculation.
itkSetMacro(StopValue, double);
itkGetConstMacro(StopValue, double);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( OutputHasNumericTraitsCheck,
( Concept::HasNumericTraits< OutputImageValueType > ) );
itkConceptMacro( SameDimensionCheck,
( Concept::SameDimension< TInputImage::ImageDimension, TOutputImage::ImageDimension > ) );
// End concept checking
#endif
protected:
IterativeInverseDisplacementFieldImageFilter();
~IterativeInverseDisplacementFieldImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
void GenerateData() ITK_OVERRIDE;
unsigned int m_NumberOfIterations;
double m_StopValue;
double m_Time;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(IterativeInverseDisplacementFieldImageFilter);
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkIterativeInverseDisplacementFieldImageFilter.hxx"
#endif
#endif
|
