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FLOAT images instead of BYTE ones from IDL Object graphics ? [message #64854]

Thu, 22 January 2009 06:42

Gianluca Li Causi
Messages: 21
Registered: August 2005

Junior Member

Hi,
I'm working with 3D object rendering and I see that the oWindow ->
GetProperty, IMAGE_DATA=Img always returns a BYTE-type image, while I
need a FLOAT-type one, not quantized in the 256 levels.

How can I do?

I need this because I always need a 0_to_255 grayscale image of a
volumetric data, while, for any values of the Opacity, I cannot
produce a final image with a maximum gray greater than 100 (in fact
the final gray levels depends on both the volume data, the opacity and
the number of elements of the volume array).
If I scale up the final byte image I get a very bad image with
quantized grayscale...

Someone can help?

Thanks a lot
Gianluca

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