[vtkusers] Combination of two dataset---help

[wang minyou]

Hi all,

I'm using vtkImageGradient to get LinkEdges of a image, is there anyclass 
to combine the LinkEdges and the original image into one image.
Anyone knows how to do that? Or could give me a direction?
Any help will be greatly appretiated. 
 
Thanks in advance 

Wang

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