ITK  5.4.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageFusion/OverlayLabelMapOnTopOfAnImage/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 # https://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 import argparse
20 
21 parser = argparse.ArgumentParser(description="Overlay Label Map On Top Of An Image.")
22 parser.add_argument("input_image")
23 parser.add_argument("label_map")
24 parser.add_argument("output_image")
25 args = parser.parse_args()
26 
27 PixelType = itk.ctype("unsigned char")
28 Dimension = 2
29 
30 ImageType = itk.Image[PixelType, Dimension]
31 
32 
33 reader = itk.ImageFileReader[ImageType].New()
34 reader.SetFileName(args.input_image)
35 
36 labelReader = itk.ImageFileReader[ImageType].New()
37 labelReader.SetFileName(args.label_map)
38 
39 
40 LabelType = itk.ctype("unsigned long")
41 LabelObjectType = itk.StatisticsLabelObject[LabelType, Dimension]
42 LabelMapType = itk.LabelMap[LabelObjectType]
43 
44 converter = itk.LabelImageToLabelMapFilter[ImageType, LabelMapType].New()
45 converter.SetInput(labelReader)
46 
47 RGBImageType = itk.Image[itk.RGBPixel[PixelType], Dimension]
48 overlayFilter = itk.LabelMapOverlayImageFilter[
49  LabelMapType, ImageType, RGBImageType
50 ].New()
51 overlayFilter.SetInput(converter.GetOutput())
52 overlayFilter.SetFeatureImage(reader.GetOutput())
53 overlayFilter.SetOpacity(0.5)
54 
55 
56 itk.imwrite(overlayFilter.GetOutput(), args.output_image)
itk::RGBPixel
Represent Red, Green and Blue components for color images.
Definition: itkRGBPixel.h:58
itk::LabelImageToLabelMapFilter
convert a labeled image to a label collection image
Definition: itkLabelImageToLabelMapFilter.h:49
itk::StatisticsLabelObject
A Label object to store the common attributes related to the statistics of the object.
Definition: itkStatisticsLabelObject.h:41
itk::LabelMap
Templated n-dimensional image to store labeled objects.
Definition: itkLabelMap.h:70
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:88
New
static Pointer New()
itk::LabelMapOverlayImageFilter
Apply a colormap to a label map and superimpose it on an image.
Definition: itkLabelMapOverlayImageFilter.h:59