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Re: IDL w/ 12-bit grayscale? [message #48232 is a reply to message #48115]

Wed, 05 April 2006 09:12

mchinand
Messages: 66
Registered: September 1996

Member

In article <pan.2006.04.03.19.10.43.328000@rsinc.com>,
Karl Schultz <k____schultz@rsinc.com> wrote:
>
> Mike, what graphics card are you using. A DOME card?
>
> The IDL Direct Graphics 'X' driver will probably require some work to
> support 12-bit channels. The driver does support the GrayScale Visual
> type, but probably initializes the first 256 entries of the Colormap to a
> ramp from back to white, and does not touch the other Colormap entries.
> Then, for images, it only writes the values [0-255] into the frame buffer.
> It works, but you're not using all the bits.
>
> Karl

Yes, I think it was a DOME card. I tried it on two different systems, not sure if the other
one was DOME as well. It would be great if the driver could use the full bit-depth of the
hardware.

--Mike

--
Michael Chinander
m-chinander@uchicago.edu
Department of Radiology
University of Chicago

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[Message index]

		IDL w/ 12-bit grayscale? By: mchinand on Tue, 28 March 2006 08:45
		Re: IDL w/ 12-bit grayscale? By: mchinand on Wed, 05 April 2006 09:12
		Re: IDL w/ 12-bit grayscale? By: Karl Schultz on Mon, 03 April 2006 12:10
		Re: IDL w/ 12-bit grayscale? By: mchinand on Mon, 03 April 2006 10:00
		Re: IDL w/ 12-bit grayscale? By: David Fanning on Mon, 03 April 2006 07:22

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