| Re: PostScript and TrueColor images [message #73062 is a reply to message #73061] |
Fri, 22 October 2010 11:57   |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Karl writes:
> Why are you saying "bits=8"?
> This might imply bits per pixel and you have 24-bits of image data.
> I'm not real sure how the PS device works in this respect, but you
> might be knocking 24-bits of color information down to 8 bits, which
> would certainly make the image look different. Try "bits=24"?
From the IDL documentation (I know):
When writing TrueColor images to a PostScript file, the
BITS_PER_PIXEL value applies to each channel of the image.
Thus, to write a 24-bit image, which consists of three
8-bit image planes, set BITS_PER_PIXEL=8.
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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