ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageGradient/ComputeGradientMagnitudeRecursiveGaussian/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) != 4:
21  print("Usage: " + sys.argv[0] + " <InputImage> <OutputImage> <Sigma>")
22  sys.exit(1)
23 
24 inputImage = sys.argv[1]
25 outputImage = sys.argv[2]
26 sigma = float(sys.argv[3])
27 
28 PixelType = itk.F
29 Dimension = 2
30 ImageType = itk.Image[PixelType, Dimension]
31 
32 reader = itk.ImageFileReader[ImageType].New()
33 reader.SetFileName(inputImage)
34 
35 gradientMagnitudeImageFilter = \
37 gradientMagnitudeImageFilter.SetInput(reader.GetOutput())
38 gradientMagnitudeImageFilter.SetSigma(sigma)
39 
40 writer = itk.ImageFileWriter[ImageType].New()
41 writer.SetFileName(outputImage)
42 writer.SetInput(gradientMagnitudeImageFilter.GetOutput())
43 
44 writer.Update()
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::GradientMagnitudeRecursiveGaussianImageFilter::New
static Pointer New()