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View 24-bit images [message #18823]

Fri, 04 February 2000 00:00

Alvaro
Messages: 6
Registered: December 1999

Junior Member

Hello to all,

I' having problems about viewing 24-bit images.
I have got an image in HDF format. The data is stored as INT (from -32000 to
32000) and use the HDF_... functions to get the image data. For viewing the
data in the screen, I use:

TV, imagedata, Order=1

but almost I can't see anythig!. So, I try:

TVScl, imagedata, Order=1

Now I can see the image, but only 256 colors (or grey levels), so I'm losing
bit values. Why?
I'm using Windows in 32-bits mode and IDL has: !D.N_Colors=16777216,
!D.Table_Size=256

Who can help me? I'm a bit "lost" with managing colors in IDL.

Thanks.
____________________________________ ___ __ _
Alvaro, atarela@usc.es
University of Santiago de Compostela (SPAIN)

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