[sane-devel] pixma backend: -x/y auto advertised but not available / how to crop?
manuel at reiter.pm
Thu Apr 27 21:05:42 UTC 2017
Nobody? I found this old discussion which seems to suggest the pixma devices don't support auto-detection:
If that's indeed the case, may I suggest updating the pixma backend so that it doesn't advertise capabilities that don't exist?
Also, I'd still appreciate suggestion for a scriptable approach to achieve this functionality.
Am 11.04.2017 um 16:44 schrieb Manuel Reiter:
> I'm using saned with a Pixma MP610 all-in-one on a Raspberry Pi 3 running an up-to-date Rasbian Jessie. scanimage --help shows me the following options for Geometry:
> Options specific to device `net:localhost:pixma:04A91725_414EE7':
> -l auto|0..216.069mm 
> Top-left x position of scan area.
> -t auto|0..297.011mm 
> Top-left y position of scan area.
> -x auto|0..216.069mm [216.069]
> Width of scan-area.
> -y auto|0..297.011mm [297.011]
> Height of scan-area.
> However, trying to actually use "-x auto" results in an error:
> reiter at hive:~ $ scanimage -d net:localhost:pixma --mode Color \
> --resolution 300 -l auto -t auto -x auto -y auto > /dev/null
> scanimage: option --x: bad option value (rest of option: auto)
> Is this a bug or an error on my part?
> I intend to use this scanner for a document management system and expect to scan quite a number of non-full-size documents. If x/y auto is indeed not available, what would be a good way to automatically crop my scans? The included (Mac) Software actually does a decent job so it seems to be possible.
> Thanks in advance for your answers!
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