ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/AnisotropicSmoothing/ComputeCurvatureAnisotropicDiffusion/Code.py
1 #!/usr/bin/env python
2 
3 # Copyright NumFOCUS
4 #
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
8 #
9 # http://www.apache.org/licenses/LICENSE-2.0.txt
10 #
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
16 
17 import sys
18 import itk
19 
20 if len(sys.argv) != 6:
21  print("Usage: " + sys.argv[0] + " <inputImage> <outputImage> "
22  "<numberOfIterations> <timeStep> <conductance>")
23  sys.exit(1)
24 
25 inputImage = sys.argv[1]
26 outputImage = sys.argv[2]
27 numberOfIterations = int(sys.argv[3])
28 timeStep = float(sys.argv[4])
29 conductance = float(sys.argv[5])
30 
31 InputPixelType = itk.F
32 OutputPixelType = itk.UC
33 Dimension = 2
34 
35 InputImageType = itk.Image[InputPixelType, Dimension]
36 OutputImageType = itk.Image[OutputPixelType, Dimension]
37 
38 ReaderType = itk.ImageFileReader[InputImageType]
39 reader = ReaderType.New()
40 reader.SetFileName(inputImage)
41 
43  InputImageType, InputImageType]
44 curvatureAnisotropicDiffusionFilter = FilterType.New()
45 
46 curvatureAnisotropicDiffusionFilter.SetInput(reader.GetOutput())
47 curvatureAnisotropicDiffusionFilter.SetNumberOfIterations(numberOfIterations)
48 curvatureAnisotropicDiffusionFilter.SetTimeStep(timeStep)
49 curvatureAnisotropicDiffusionFilter.SetConductanceParameter(conductance)
50 
51 RescaleFilterType = itk.RescaleIntensityImageFilter[
52  InputImageType, OutputImageType]
53 rescaler = RescaleFilterType.New()
54 rescaler.SetInput(curvatureAnisotropicDiffusionFilter.GetOutput())
55 
56 outputPixelTypeMinimum = itk.NumericTraits[OutputPixelType].min()
57 outputPixelTypeMaximum = itk.NumericTraits[OutputPixelType].max()
58 
59 rescaler.SetOutputMinimum(outputPixelTypeMinimum)
60 rescaler.SetOutputMaximum(outputPixelTypeMaximum)
61 
62 WriterType = itk.ImageFileWriter[OutputImageType]
63 writer = WriterType.New()
64 writer.SetFileName(outputImage)
65 writer.SetInput(rescaler.GetOutput())
66 
67 writer.Update()
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::CurvatureAnisotropicDiffusionImageFilter
This filter performs anisotropic diffusion on a scalar itk::Image using the modified curvature diffus...
Definition: itkCurvatureAnisotropicDiffusionImageFilter.h:58
itk::ImageFileWriter
Writes image data to a single file.
Definition: itkImageFileWriter.h:87
itk::NumericTraits
Define additional traits for native types such as int or float.
Definition: itkNumericTraits.h:58
itk::RescaleIntensityImageFilter
Applies a linear transformation to the intensity levels of the input Image.
Definition: itkRescaleIntensityImageFilter.h:154
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86