SphinxExamples/src/Bridge/VtkGlue/ConvertRGBvtkImageDataToAnitkImage/Code.py

#!/usr/bin/env python

#==========================================================================
#
#   Copyright Insight Software Consortium
#
#   Licensed under the Apache License, Version 2.0 (the "License")
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#          http://www.apache.org/licenses/LICENSE-2.0.txt
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
#
#==========================================================================*/

import sys
import itk
import vtk

if len(sys.argv) < 2:
    print('Usage: ' + sys.argv[0] + ' <InputFileName>')
    sys.exit(1)
imageFileName = sys.argv[1]

Dimension = 2
PixelComponentType = itk.UC
PixelType = itk.RGBPixel[PixelComponentType]
ImageType = itk.Image[PixelType, Dimension]

reader = vtk.vtkPNGReader()
reader.SetFileName(imageFileName)
reader.SetDataScalarTypeToUnsignedChar()

vtkToItkFilter = itk.VTKImageToImageFilter[ImageType].New()
vtkToItkFilter.SetInput(reader.GetOutput())

reader.Update()
vtkToItkFilter.Update()
myitkImage = vtkToItkFilter.GetOutput()
print(myitkImage)