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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkimagecompose.py,v $
## Language: Python
## Date: $Date: 2006/07/17 09:53:14 $
## Version: $Revision: 1.8 $
## Copyright (c) Luca Antiga, David Steinman. All rights reserved.
## See LICENCE file for details.
## This software is distributed WITHOUT ANY WARRANTY; without even
## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
## PURPOSE. See the above copyright notices for more information.
import vtk
import sys
import pypes
vmtkimagecompose = 'vmtkImageCompose'
class vmtkImageCompose(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Image = None
self.Image2 = None
self.Operation = 'min'
self.NegateImage2 = False
self.SetScriptName('vmtkimagecompose')
self.SetScriptDoc('compose an image based on user-specified parameters or on a reference image')
self.SetInputMembers([
['Image','i','vtkImageData',1,'','the input image','vmtkimagereader'],
['Image2','i2','vtkImageData',1,'','the second input image','vmtkimagereader'],
['Operation','operation','str',1,'["min","max","multiply","subtract"]','the operation used to compose images'],
['NegateImage2','negatei2','bool',1,'','negate the second input before composing']
])
self.SetOutputMembers([
['Image','o','vtkImageData',1,'','the output image','vmtkimagewriter']
])
def Execute(self):
if self.Image == None:
self.PrintError('Error: No input image.')
if self.Image2 == None:
self.PrintError('Error: No input image2.')
if self.NegateImage2:
negateFilter = vtk.vtkImageMathematics()
negateFilter.SetInput(self.Image2)
negateFilter.SetOperationToMultiplyByK()
negateFilter.SetConstantK(-1.0)
negateFilter.Update()
self.Image2 = negateFilter.GetOutput()
composeFilter = vtk.vtkImageMathematics()
composeFilter.SetInput1(self.Image)
composeFilter.SetInput2(self.Image2)
if self.Operation == 'min':
composeFilter.SetOperationToMin()
elif self.Operation == 'max':
composeFilter.SetOperationToMax()
elif self.Operation == 'multiply':
composeFilter.SetOperationToMultiply()
elif self.Operation == 'subtract':
composeFilter.SetOperationToSubtract()
else:
self.PrintError('Error: Unsupported operation')
composeFilter.Update()
self.Image = composeFilter.GetOutput()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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