[vtkusers] RGB Greyscale from Scalare

[Alessandro]

Hello,

I need to apply a vtkImageBlend to a Scalare image and a RGBA image. I'd like result to be a RGBA image too. Is there a simple way to move the Scalar image into a RGBA one maintaining all original greyscale values? Otherwise the vtkImageBlend shows an error since the two images have different type.

Thanks,
Ale