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Re: colour conversion 8 -> 24 bit [message #51395 is a reply to message #51393]

Tue, 21 November 2006 06:13

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Bringfried Stecklum writes:

> it might seem weird but for some reason I want to convert a colour-indexed 8 bit
> image to a true colour one. Since there is no opposite of color_quan I ask
> around how to perform a "colour extension"?

Like this:

LoadCT, 5
TVLCT, r, g, b, /Get
image24 = [ [[ r[image] ]], [[ g[image] ]], [[ b[image] ]] ]

You can find the details here:

http//www.dfanning.com/color_tips/image24_from_image8.html

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: colour conversion 8 -> 24 bit By: Kenneth Bowman on Tue, 21 November 2006 06:15
		Re: colour conversion 8 -> 24 bit By: David Fanning on Tue, 21 November 2006 06:13
		Re: colour conversion 8 -> 24 bit By: Bringfried Stecklum on Tue, 21 November 2006 11:53

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