ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageIntensity/ConvertRGBImageToGrayscaleImage/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] + ' <InputFileName> <OutputFileName>')
22  sys.exit(1)
23 
24 inputFileName = sys.argv[1]
25 outputFileName = sys.argv[2]
26 
27 Dimension = 2
28 
29 ComponentType = itk.UC
30 InputPixelType = itk.RGBPixel[ComponentType]
31 InputImageType = itk.Image[InputPixelType, Dimension]
32 
33 OutputPixelType = itk.UC
34 OutputImageType = itk.Image[OutputPixelType, Dimension]
35 
36 reader = itk.ImageFileReader[InputImageType].New()
37 reader.SetFileName(inputFileName)
38 
39 rgbFilter = itk.RGBToLuminanceImageFilter.New(reader)
40 
41 writer = itk.ImageFileWriter[OutputImageType].New()
42 writer.SetFileName(outputFileName)
43 writer.SetInput(rgbFilter.GetOutput())
44 
45 writer.Update()
itk::RGBPixel
Represent Red, Green and Blue components for color images.
Definition: itkRGBPixel.h:58
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::RGBToLuminanceImageFilter::New
static Pointer New()
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86