/
itkUnaryFunctorImageFilter.hxx
108 lines (93 loc) · 3.82 KB
/
itkUnaryFunctorImageFilter.hxx
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
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkUnaryFunctorImageFilter_hxx
#define itkUnaryFunctorImageFilter_hxx
#include "itkImageScanlineIterator.h"
#include "itkTotalProgressReporter.h"
namespace itk
{
template <typename TInputImage, typename TOutputImage, typename TFunction>
UnaryFunctorImageFilter<TInputImage, TOutputImage, TFunction>::UnaryFunctorImageFilter()
{
this->SetNumberOfRequiredInputs(1);
this->InPlaceOff();
this->DynamicMultiThreadingOn();
}
/**
* UnaryFunctorImageFilter can produce an image which is a different resolution
* than its input image. As such, UnaryFunctorImageFilter needs to provide an
* implementation for GenerateOutputInformation() in order to inform
* the pipeline execution model. The original documentation of this
* method is below.
*
* \sa ProcessObject::GenerateOutputInformaton()
*/
template <typename TInputImage, typename TOutputImage, typename TFunction>
void
UnaryFunctorImageFilter<TInputImage, TOutputImage, TFunction>::GenerateOutputInformation()
{
// do not call the superclass' implementation of this method since
// this filter allows the input the output to be of different dimensions
// get pointers to the input and output
OutputImageType * outputPtr = this->GetOutput();
const InputImageType * inputPtr = this->GetInput();
if (!outputPtr || !inputPtr)
{
return;
}
// Set the output image largest possible region. Use a RegionCopier
// so that the input and output images can be different dimensions.
OutputImageRegionType outputLargestPossibleRegion;
this->CallCopyInputRegionToOutputRegion(outputLargestPossibleRegion, inputPtr->GetLargestPossibleRegion());
outputPtr->SetLargestPossibleRegion(outputLargestPossibleRegion);
ImageToImageFilterDetail::ImageInformationCopier<Superclass::OutputImageDimension, Superclass::InputImageDimension>
informationCopier;
informationCopier(outputPtr, inputPtr);
}
template <typename TInputImage, typename TOutputImage, typename TFunction>
void
UnaryFunctorImageFilter<TInputImage, TOutputImage, TFunction>::DynamicThreadedGenerateData(
const OutputImageRegionType & outputRegionForThread)
{
const TInputImage * inputPtr = this->GetInput();
TOutputImage * outputPtr = this->GetOutput(0);
// Define the portion of the input to walk for this thread, using
// the CallCopyOutputRegionToInputRegion method allows for the input
// and output images to be different dimensions
InputImageRegionType inputRegionForThread;
this->CallCopyOutputRegionToInputRegion(inputRegionForThread, outputRegionForThread);
TotalProgressReporter progress(this, outputPtr->GetRequestedRegion().GetNumberOfPixels());
ImageScanlineConstIterator inputIt(inputPtr, inputRegionForThread);
ImageScanlineIterator outputIt(outputPtr, outputRegionForThread);
inputIt.GoToBegin();
outputIt.GoToBegin();
while (!inputIt.IsAtEnd())
{
while (!inputIt.IsAtEndOfLine())
{
outputIt.Set(m_Functor(inputIt.Get()));
++inputIt;
++outputIt;
}
inputIt.NextLine();
outputIt.NextLine();
progress.Completed(outputRegionForThread.GetSize()[0]);
}
}
} // end namespace itk
#endif