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# ==========================================================================
#
# Copyright NumFOCUS
#
# 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
#
# https://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 InsightToolkit as itk
import sys
reader = itk.itkImageFileReaderF2_New()
reader.SetFileName(sys.argv[1])
diffusion = itk.itkGradientAnisotropicDiffusionImageFilterF2F2_New()
diffusion.SetInput(reader.GetOutput())
diffusion.SetTimeStep(0.0625)
diffusion.SetConductanceParameter(9.0)
diffusion.SetNumberOfIterations(5)
gradient = itk.itkGradientMagnitudeImageFilterF2F2_New()
gradient.SetInput(diffusion.GetOutput())
watershed = itk.itkWatershedImageFilterF2_New()
watershed.SetInput(gradient.GetOutput())
watershed.SetThreshold(0.01)
watershed.SetLevel(0.2)
writer = itk.itkImageFileWriterUL2_New()
writer.SetFileName(sys.argv[2])
writer.SetInput(watershed.GetOutput())
writer.Update()
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