[sorry if you get this twice, sent from wrong account] On Tue, 2012-02-28 at 06:52 +0100, mamboze wrote: > I've got a problem editing an image with a dotted background in it. By > 'dotted', I mean an array of small evenly spaced black dots on a white > background.
The most common cause for this is that it was a printed image that someone scanned, and the dots are what's called a screen. There area number of descreening algorithms. Some scanners can do this fairly effectively. I often try scanning at 1200dpi or 1800dpi, then doing a gaussian blur with a radius of between 11 and 19 pixels -- increase in the preview until you can't see the grid at all, then add a couple. Then afterwards scale the image down a lot, e.g. to 20% or even 10% of the original scan, and use filters->enhance->sharpen. Select the rectangles with text in them, and copy them to a separate layer first, bcause they probably don't want blurring. Liam -- Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ Pictures from old books: http://fromoldbooks.org/ -- Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ Pictures from old books: http://fromoldbooks.org/ Ankh: irc.sorcery.net irc.gnome.org www.advogato.org _______________________________________________ gimp-user-list mailing list gimp-user-list@gnome.org http://mail.gnome.org/mailman/listinfo/gimp-user-list