[vtkusers] How to overlay two images with different opacities, ..

[John Drescher]

>        Perhaps this is an obvious question, but I've been playing with
> textures and lookuptables but I didn't get what I was looking for. I don't
> know where I'm wrong.
>
>        I would like to overlay two images (a color/graylevel image and its
> segmented version), and then I would like to change the opacity of any label
> or change its color. Could anybody give me any hint?.
>

For my Lung CT application I use 2 independent actors with the color
segmentation result added after the image. For the segmentation result
I set opacity using the lookup table.

John