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
