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Re: 3D array imaging with different colors [message #83427 is a reply to message #83347]

Fri, 01 March 2013 06:49

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

tackmeister@gmail.com writes:

> If I understand your first post correctly, by using a 3D array in the
> image function I define the colors directly by their RGB channel, so
> if I want to get a different color output I'd have to manipulate RGB
> channel seperately and change it to the color I want? Is there a way
> you could suggest me to do this automatically so I get the result I'd
> like?

If you just want to change the background color. Find all the pixels
that have zeros in all three color channels and change the value of
these pixels to 255 in each color channel. Do the opposite to change
white pixels to black.

I doubt this will be satisfying to you, because normally in a "mixing"
situation like this, there will be a lot of pixels that are "almost"
black (e.g., [0,1,4]). These will not be found and won't be changed.

I think it will be easier in your situation to just learn to love black
backgrounds. You will sleep better at night. :-)

Cheers,

David

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

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[Message index]

		Re: 3D array imaging with different colors By: tackmeister on Fri, 01 March 2013 03:39
		Re: 3D array imaging with different colors By: David Fanning on Thu, 28 February 2013 09:15
		Re: 3D array imaging with different colors By: David Fanning on Thu, 28 February 2013 08:49
		Re: 3D array imaging with different colors By: David Fanning on Fri, 01 March 2013 06:49

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