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Re: RGB image to 8 bit ?? [message #17031 is a reply to message #17030]

Thu, 09 September 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Liam Gumley (Liam.Gumley@ssec.wisc.edu) writes:

> Richard Tyc wrote:
>> At this point, the image is a bytarr[3,512,512]
>>
>> In order to load it into Xinteranimate, it needs to be in
>> bytarr[512,512] form ?
>>
>> So, how do you convert a RGB triple image into a single 8-bit image
>> while retaining
>> the colors (although lower resolution of color)
>
> pseudo = color_quan(image, 1, r, g, b, colors=!d.table_size)
> device, decomposed=0
> tvlct, r, g, b
> tv, pseudo

Be sure you know what you are doing with Color_Quan here.
What you *don't* want to be doing is getting a different
color table for each image frame.

When I faced the same problem of 24-bit images in
XInterAnimate, I found it fairly trivial to modify the
XInterAnimate code to accept 24-bit images. Hey, here is
a suggestion for IDL 5.3. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
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[Message index]

		Re: RGB image to 8 bit ?? By: Liam Gumley on Thu, 09 September 1999 00:00
		Re: RGB image to 8 bit ?? By: davidf on Thu, 09 September 1999 00:00
		Re: RGB image to 8 bit ?? By: Liam Gumley on Thu, 09 September 1999 00:00

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