Kevin Payne wrote:
> My initial guess would be that your image mode is Indexed.
>
> Check Image>>Mode and make sure it is set to RGB after importing the
> images.
>
I *think* it's RGB, but I'll doublecheck that. Thanks.
mark
> Kevin
>
>
> ________________________________________
> From: gimp-user-list <gimp-user-list-boun...@gnome.org> on behalf of
> m.r...@5-cent.us <m.r...@5-cent.us>
> Sent: 11 April 2016 15:40
> To: gimp-user-list@gnome.org
> Subject: [Gimp-user] GIMP, .pdf, and threshold
>
> Hi, folks,
>
> I'm running CentOS 6.7, and the most current GIMP for that, 2.6.9-8. A
> friend, half a continent away, is scanning parts of a number of old
> 'zines for me. From that, The originals were printed on colored
> paper....
>
> I want to do OCR. On a couple of .pdfs, one I d/l from the 'Net, and
> one from a different scanner, I import it into GIMP as images (we're
> talking 16-20pp), and, page by page, push the contrast to max, cut the
> brightness to half or less of what it was, then pull up threshold, and
> the preview shows me black text on white, and saving it that way,
> tesseract works just fine.
>
> Doing that with these scans, nada. No useful changes, and threshold
> does nothing.
>
> Clues for the poor?
>
> mark
>
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