Re: [HPLIP-Devel] Strange quality using hpaio sane backend with a C4180

2007-10-07 Thread P.B.
@Dirk: Thanks, I'll check out Median filters to see how they work out. @All: Meanwhile, I've did some post-processing tests in GIMP and found out that a sequence of "Despeckle" and "Blur" work wonders! Since this might be an issue for more than just the C4180 scanners, I will post my results on

Re: [HPLIP-Devel] Strange quality using hpaio sane backend with a C4180

2007-10-06 Thread PB
Thanks for your reply Dave! hm... that's what I thought at first, since the windows-version is so incredibly blurred. However, I can't put my finger on it, but the characteristics of this edge-noise just seem strange to me... The edges of objects seem to be too distorted to fix by some plain

Re: [HPLIP-Devel] Strange quality using hpaio sane backend with a C4180

2007-10-05 Thread Suffield, David
Nice analyses on the image quality. :) Our hpaio sane backend performs no up-stream image enhancements, so what you see is uncompressed RGB or jpeg directly from the scanner. The windows scanning solution does performs up-stream image enhancements which may or may not be desirable. In order to

Re: [HPLIP-Devel] Strange quality using hpaio sane backend with a C4180

2007-10-04 Thread Zbigniew Luszpinski
Thursday 04 of October 2007 18:59:00 PB wrote: > Since upgrading to HPLIP v1.7.7 I can finally use my HP C4180 > scanner/printer device for scanning, but the outcome is rather ugly. The current version is 2.7.9. > In order to give the developers the possibility, to "see" what I'm > talking about,