ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/BinaryMathematicalMorphology/ErodeABinaryImage/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 itk
18 import sys
19 
20 if len(sys.argv) != 4:
21  print("Usage: " + sys.argv[0] + " <inputImage> <outputImage> <radius>")
22  sys.exit(1)
23 
24 inputImage = sys.argv[1]
25 outputImage = sys.argv[2]
26 radiusValue = int(sys.argv[3])
27 
28 PixelType = itk.UC
29 Dimension = 2
30 
31 ImageType = itk.Image[PixelType, Dimension]
32 
33 ReaderType = itk.ImageFileReader[ImageType]
34 reader = ReaderType.New()
35 reader.SetFileName(inputImage)
36 
37 StructuringElementType = itk.FlatStructuringElement[Dimension]
38 structuringElement = StructuringElementType.Ball(radiusValue)
39 
40 ErodeFilterType = itk.BinaryErodeImageFilter[ImageType,
41  ImageType,
42  StructuringElementType]
43 erodeFilter = ErodeFilterType.New()
44 erodeFilter.SetInput(reader.GetOutput())
45 erodeFilter.SetKernel(structuringElement)
46 erodeFilter.SetForegroundValue(255) # Intensity value to erode
47 erodeFilter.SetBackgroundValue(0) # Replacement value for eroded voxels
48 
49 WriterType = itk.ImageFileWriter[ImageType]
50 writer = WriterType.New()
51 writer.SetFileName(outputImage)
52 writer.SetInput(erodeFilter.GetOutput())
53 
54 writer.Update()
itk::FlatStructuringElement
A class to support a variety of flat structuring elements, including versions created by decompositio...
Definition: itkKernelImageFilter.h:27
itk::BinaryErodeImageFilter
Fast binary erosion of a single intensity value in the image.
Definition: itkBinaryErodeImageFilter.h:72
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