Hi,
        I was just trying to visualise some data, and came to the
conclusion that it would be nice if I could visualise 3 data sets
simultaneously. Say I have 3 images that correspond to the same scene,
each with different imaging parameters (this is very normal in remote
sensing: you have views of the same scene at, say differentfrequencies).
Since the data is overlapping, I can assign each image a basic colour
and blend them:
-image 1 has red
-image 2 has green
-image 3 has blue

        Areas that in the three images have a large value are then seen
as white, whereas areas with low values in the three images are mostly
black. Basically, you blend the colours.

        I can do this by working out RGB values and then importing that
into DX, but I was wondering whether there's a way to do this
automagically. My problem is that I am not sure of this technique's name
either.

        Any help appreciated,
        José
-- 
José L Gómez Dans                       PhD student
Tel: +44 114 222 5582                   Radar & Communications Group
FAX; +44 870 132 2990                   Department of Electronic Engineering
                                        University of Sheffield UK

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