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On Mon, Feb 09, 2004 at 02:40:31AM -0800, Jeff Silverman wrote: > The problem also describes a problem: the registration of the colors= =20 > breaks down at densities beyound 600 DPI. Curiously, the problem is=20 > worse at 900 DPI than at 1200 DPI. I have an example - to avoid=20 > flooding this list, I put the examples on the=20 > http://www.commercialventvac.com/~jeffs/epson1670andFedora.html page. Ok, seems you have a colour offsetting problem. I know with the scanner I have (hp5400) that if you choose a high enough resolution, the xwidth of the data exceeds the internal transmission buffer. This has a tendancy to cause received data to be misterpreted as the wrong colour and at the wrong place. Given your sharp horizontal lines after which it breaks it would seem to be something like that. I've never done it myself but you should be able to (maybe in GIMP) seperate the image in the three planes, one for each colour, and move them around until they line up. Once you find the pattern, you can code it in. BTW, maybe you should put up thumbnails to demonstrate the problem and let people click on the images for size. I'm on a fast connection and it took ages to download. Hope this helps, --=20 Martijn van Oosterhout <[email protected]> http://svana.org/kleptog/ > (... have gone from d-i being barely usable even by its developers > anywhere, to being about 20% done. Sweet. And the last 80% usually takes > 20% of the time, too, right?) -- Anthony Towns, debian-devel-announce --IJpNTDwzlM2Ie8A6 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQFAJ3saY5Twig3Ge+YRAsuUAJwMha5IKeTFKNyVSYOhP6KP/X88PQCfYV5Z lZXcrG8jnHY+EZeQXpuicdk= =QF+v -----END PGP SIGNATURE----- --IJpNTDwzlM2Ie8A6--
