Canon scanners often have this variable interlacing at different resolutions, so I am not surprised to see this. However, this particular scanner has the weirdest interlacing that canon does. If you can compile from source, I can send you some patches to try. See http://www.sane-project.org/README.linux
allan On Tue, Mar 15, 2016 at 9:17 AM, el-ti <t...@ewetel.net> wrote: > Unfortunately, yes. > > I uninstalled "cndrvsane-drc125" and restartet the system. The color shift is > still there. > > And there is also the problem, that there is a 1/2 cm cut on the long edge of > the scanned page (the "duplex-offset" option only handles the short edge) – > but I guess this is another problem. > > If you need more information, do not hesitate to tell me. > > el-ti > > Am 15.03.2016 um 12:41 schrieb m. allan noah: >> If you uninstall the Canon "DR-C125 Driver for Linux V1.0 (v1.0)" >> software, does this color shift still happen? >> >> allan >> >> On Tue, Mar 15, 2016 at 7:37 AM, el-ti <t...@ewetel.net> wrote: >> > The system is using the libsane version from the PPA: >> > 1.0.26-git20160305-wily0 >> > >> > It was installed above the one from Ubuntu’s repositories, when I added >> > the PPA. >> > >> > el-ti >> > >> > Am 15.03.2016 um 12:22 schrieb m. allan noah: >> >> You have installed both sane-backends, and canon's driver? Which one >> >> are you using? Assuming you are actually using sane-backends, we will >> >> have to modify the code to control the color descrambling. >> >> >> >> allan >> >> >> >> On Tue, Mar 15, 2016 at 6:08 AM, el-ti <t...@ewetel.net> wrote: >> >>> Hello, >> >>> >> >>> I have an appendix to make – maybe someone has a hint for me, why the >> >>> scanner behaves really strange: >> >>> >> >>> Depending on the scanning resolution, the shifting on the color range is >> >>> different! I used the following command to test this: >> >>> >> >>> scanimage --batch --source "ADF Duplex" --page-width 210 >> >>> --page-height=297 -l 0 -t 0 -x 210 -y 297 --mode Color --resolution 300 >> >>> >> >>> Then I tried all available resolutions: 100, 150, 200, 240, 300, 400, >> >>> 600. The results are strange: >> >>> >> >>> Scanning with 100,150,200 gives me: >> >>> Blue -> Red >> >>> Red -> Green >> >>> Green -> Blue >> >>> >> >>> Scanning with 300 and 400 gives me: >> >>> Blue -> Green >> >>> Green -> Red >> >>> Red -> Blue >> >>> >> >>> And scanning with 240 and 600 shows the RIGHT colors. >> >>> >> >>> How is that possible? And how can this problem be solved? >> >>> >> >>> >> >>> I installed Rolf Bensch’s PPA >> >>> (https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-git), because it >> >>> solved the back page cutting problem when scanning Duplex. (see >> >>> http://permalink.gmane.org/gmane.comp.graphics.scanning.sane.devel/24903) >> >>> >> >>> Other than that, I only installed the Canon "DR-C125 Driver for Linux >> >>> V1.0 (v1.0)". >> >>> >> >>> Any hint is appreciated! >> >>> el-ti >> >>> >> >>> Am 04.03.2016 um 10:59 schrieb el-ti: >> >>>> Dear Sane-developers and users, >> >>>> >> >>>> through this very helpful discussion >> >>>> (http://permalink.gmane.org/gmane.comp.graphics.scanning.sane.devel/24903), >> >>>> I managed to get my Canon Scanner working in Duplex without cutting 1 cm >> >>>> of the back page. >> >>>> >> >>>> Everything seems to work fine. However, I discovered a very strange >> >>>> behaviour regarding the colour management: When scanning in simplex >> >>>> mode, everything works fine. There is no page cutting and colours are as >> >>>> they should be. But in duplex mode, the colours are somehow shifted on >> >>>> the colour range: Blue is scanned as green, green is scanned as red, red >> >>>> is scanned as blue (for both back and front page). >> >>>> >> >>>> Is there an easy solution for this? Or did I forget to install >> >>>> something? >> >>>> >> >>>> Thank you very much! >> >>>> el-ti >> >>>> >> >>> >> >>> >> >>> -- >> >>> sane-devel mailing list: sane-devel@lists.alioth.debian.org >> >>> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel >> >>> Unsubscribe: Send mail with subject "unsubscribe your_password" >> >>> to sane-devel-requ...@lists.alioth.debian.org >> >> >> >> >> >> >> > >> >> >> > -- "well, I stand up next to a mountain- and I chop it down with the edge of my hand" -- sane-devel mailing list: sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-requ...@lists.alioth.debian.org
