ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageFeature/ComputeLaplacian/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) != 3:
21  print("Usage: " + sys.argv[0] + " <inputImage> <outputImage> ")
22  sys.exit(1)
23 
24 inputImage = sys.argv[1]
25 outputImage = sys.argv[2]
26 
27 InputPixelType = itk.F
28 OutputPixelType = itk.UC
29 Dimension = 2
30 
31 InputImageType = itk.Image[InputPixelType, Dimension]
32 OutputImageType = itk.Image[OutputPixelType, Dimension]
33 
34 ReaderType = itk.ImageFileReader[InputImageType]
35 reader = ReaderType.New()
36 reader.SetFileName(inputImage)
37 
38 FilterType = itk.LaplacianImageFilter[InputImageType, InputImageType]
39 laplacianFilter = FilterType.New()
40 laplacianFilter.SetInput(reader.GetOutput())
41 
42 RescaleFilterType = itk.RescaleIntensityImageFilter[
43  InputImageType, OutputImageType]
44 rescaler = RescaleFilterType.New()
45 rescaler.SetInput(laplacianFilter.GetOutput())
46 
47 outputPixelTypeMinimum = itk.NumericTraits[OutputPixelType].min()
48 outputPixelTypeMaximum = itk.NumericTraits[OutputPixelType].max()
49 
50 rescaler.SetOutputMinimum(outputPixelTypeMinimum)
51 rescaler.SetOutputMaximum(outputPixelTypeMaximum)
52 
53 WriterType = itk.ImageFileWriter[OutputImageType]
54 writer = WriterType.New()
55 writer.SetFileName(outputImage)
56 writer.SetInput(rescaler.GetOutput())
57 
58 writer.Update()
itk::LaplacianImageFilter
This filter computes the Laplacian of a scalar-valued image.
Definition: itkLaplacianImageFilter.h:63
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::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