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Re: converting window into a image [message #47009 is a reply to message #47008]

Wed, 18 January 2006 14:47

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Matt writes:

> This might be the trick. It looks like I'm running a 16 bit color? Maybe
> I'll get my admin to change it to 24bit color and I'll see how that works.
>
>
>
>
> IDL> help, /device
> Available Graphics Devices: CGM HP LJ NULL PCL PRINTER PS REGIS TEK X Z
> Current graphics device: X
> Server: X11.0, The XFree86 Project, Inc, Release 40300001
> Display Depth, Size: 16 bits, (1600,1200)
> Visual Class: TrueColor (4)
> Bits Per RGB: 6 (5/6/5)
> Physical Color Map Entries (Emulated / Actual): 256 / 64
> Colormap: Shared, 65536 colors. Translation table: Bypassed
> Graphics pixels: Combined, Dither Method: Ordered
> Write Mask: 65535 (decimal) ffff (hex)
> Graphics Function: 3 (copy)
> Current Font: -*-*-bold-r-*-*-15-*-*-*-*-*-*-*, Current TrueType Font: <default>
> Default Backing Store: Pixmap.

Ah, there you go. I think that is the problem. When
reading back colors off the display, I can't get
a full 8 bits in each channel. Thus, a full white [255,255,255]
is probably impossible.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: converting window into a image By: David Fanning on Wed, 18 January 2006 14:51
		Re: converting window into a image By: David Fanning on Wed, 18 January 2006 14:47
		Re: converting window into a image By: savoie on Wed, 18 January 2006 14:30
		Re: converting window into a image By: David Fanning on Wed, 18 January 2006 14:04
		Re: converting window into a image By: savoie on Wed, 18 January 2006 13:37
		Re: converting window into a image By: David Fanning on Wed, 18 January 2006 10:47
		Re: converting window into a image By: David Fanning on Wed, 18 January 2006 10:44
		Re: converting window into a image By: David Fanning on Wed, 18 January 2006 10:39
		Re: converting window into a image By: savoie on Wed, 18 January 2006 10:13
		Re: converting window into a image By: CD on Tue, 17 January 2006 13:32
		Re: converting window into a image By: David Fanning on Tue, 17 January 2006 12:55
		Re: converting window into a image By: mattie on Tue, 24 January 2006 07:35

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