ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/AnisotropicSmoothing/ComputePeronaMalikAnisotropicDiffusion/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) != 5:
21  print(
22  "Usage: " + sys.argv[0] + " <inputImage> <outputImage> "
23  "<numberOfIterations> <conductance>")
24  sys.exit(1)
25 
26 inputImage = sys.argv[1]
27 outputImage = sys.argv[2]
28 numberOfIterations = int(sys.argv[3])
29 conductance = float(sys.argv[4])
30 
31 Dimension = 2
32 InputPixelType = itk.UC
33 InputImageType = itk.Image[InputPixelType, Dimension]
34 OutputPixelType = itk.F
35 OutputImageType = itk.Image[OutputPixelType, Dimension]
36 
37 ReaderType = itk.ImageFileReader[InputImageType]
38 reader = ReaderType.New()
39 reader.SetFileName(inputImage)
40 
41 CastFilterType = itk.CastImageFilter[InputImageType, OutputImageType]
42 castfilter = CastFilterType.New()
43 castfilter.SetInput(reader)
44 
46  OutputImageType, OutputImageType]
47 gradientfilter = FilterType.New()
48 gradientfilter.SetInput(castfilter.GetOutput())
49 gradientfilter.SetNumberOfIterations(numberOfIterations)
50 gradientfilter.SetTimeStep(0.125)
51 gradientfilter.SetConductanceParameter(conductance)
52 
53 WriterType = itk.ImageFileWriter[OutputImageType]
54 writer = WriterType.New()
55 writer.SetFileName(outputImage)
56 writer.SetInput(gradientfilter.GetOutput())
57 
58 writer.Update()
itk::CastImageFilter
Casts input pixels to output pixel type.
Definition: itkCastImageFilter.h:104
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::ImageFileWriter
Writes image data to a single file.
Definition: itkImageFileWriter.h:87
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
itk::GradientAnisotropicDiffusionImageFilter
This filter performs anisotropic diffusion on a scalar itk::Image using the classic Perona-Malik,...
Definition: itkGradientAnisotropicDiffusionImageFilter.h:51