[vtkusers] Extract one Image-Channel as a grayscale Image

[list at kobenetz.de]

Hi,

I have Image-Data with 2 Channels.

How can I use only one Channel?

I'm looking for a filter similar to this imaginary one:


---- Imagined Code:

// Select the 2nd Channel (green) as input
imageSelectChannel->SetInput( RGBImage->GetOutput() );
imageSelectChannel->SetChannel(2);

// use the as input as a grayascale Image
grayImage->SetInput( imageSelectChannel->GetOutout() );
----

Thanks,

Chriistoph