# SumVTKImages

VTKExamples/Python//SumVTKImages

### Code

SumVTKImages.py

    #!/usr/bin/env python

    import vtk

    # ImageSets = List of Image sets
    # Weights  = List of wieghts e.g [1, 1, 1]

    def SumVTKImages(ImageSets, Weights):

        NumOfImages = len(ImageSets)
        SumFilter = vtk.vtkImageWeightedSum()
        for x in range(0, NumOfImages, 1):
            SumFilter.AddInputConnection(ImageSets[x])
            SumFilter.SetWeight(x, Weights[x])
        SumFilter.Update()

        # Return summed Image as vtkImageData
        return SumFilter.GetOutput()