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[#315912] Shifted Colors on Canon Pixma MG8150

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Date:
2018-01-05 11:10
Priority:
3
State:
Open
Submitted by:
Markus Wissekal (maxxmaster-guest)
Assigned to:
Rolf Bensch (roben-guest)
Category:
backends (drivers)
Group:
standard-compliance
Resolution:
None
Summary:
Shifted Colors on Canon Pixma MG8150

Detailed description
When scanning with my Canon MG8150 I get shifted colors in blue and yellow in one axis.

the versions and setup I use

uname -a:
Linux raspberrypi 4.1.18-v7+ #846 SMP Thu Feb 25 14:22:53 GMT 2016 armv7l GNU/Linux

cat /etc/os-release:
PRETTY_NAME="Raspbian GNU/Linux 9 (stretch)"
...

./scanimage -V:
scanimage (sane-backends) 1.0.27; backend version 1.0.27

./scanimage -L:
device `pixma:MG8100_192.168.0.111' is a CANON Canon PIXMA MG8100 multi-function peripheral
device `pixma:04A9174B_124B16' is a CANON Canon PIXMA MG8100 multi-function peripheral


I've downloaded the latest stable version and compiled it for the rpi3. when I scan in any resolution > 75dpi I get the shifts in color. I run scanimage with the options:

/home/pi/sane-backends-1.0.27/frontend/scanimage -d pixma:04A9174B_124B16 \
--resolution 300 \
--format tiff \
--mode Color > "$TMP_DIR/scan.tiff"

I've taken a small portion of the tiff and attached it as a screenshot.

one things I've tried so far, that didn't change a thing is:
In hopes that the MG81xx would behave like the MG82xx I've added

case MP990_PID:
+ case MG8100_PID:
case MG8200_PID:

in pixma_mp810.c


when I scan in gray-tones the image gets even worse, which renders OCR and storing all my receipts useless. (2nd attachment)

what else could I do to improve upon the shifts in color?

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Attached Files:

Attachments:
Size Name Date By Download
104 KiBScreen Shot 2018-01-05 at 12.08.33.png2018-01-05 11:10maxxmaster-guestScreen Shot 2018-01-05 at 12.08.33.png
171 KiBScreen Shot 2018-01-05 at 11.58.16.png2018-01-05 11:10maxxmaster-guestScreen Shot 2018-01-05 at 11.58.16.png

Changes:

Field Old Value Date By
assigned_tonone2018-01-08 03:38olaf-guest
File Added7666: Screen Shot 2018-01-05 at 11.58.16.png2018-01-05 11:10maxxmaster-guest
File Added7667: Screen Shot 2018-01-05 at 12.08.33.png2018-01-05 11:10maxxmaster-guest
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