[sane-devel] avision backend regression issue...
dgronos at gmail.com
Mon Apr 30 04:07:41 UTC 2012
Upgraded to Ubuntu 12.04. And was using gscan2pdf when I realized that I
could not scan in any other mode than color. Previous version, 10.04
Ubuntu, I could scan in all three modes, color, line art & gray scale.
This does not appear to be the case with the sane-backend 1.0.22
Options specific to device `avision:libusb:001:005':
--mode Color [Color]
Selects the scan mode (e.g., lineart, monochrome, or color).
--resolution 50..600dpi (in steps of 1) 
Sets the resolution of the scanned image.
--speed 0..4 (in steps of 1) [inactive]
Determines the speed at which the scan proceeds.
Request a preview-quality scan.
--source ADF Front|ADF Back|ADF Duplex [ADF Front]
Selects the scan source (such as a document-feeder).
-l 0..216mm 
Top-left x position of scan area.
-t 0..362mm 
Top-left y position of scan area.
-x 0..216mm 
Width of scan-area.
-y 0..362mm 
Height of scan-area.
--overscan-top 0..4mm [inactive]
The top overscan controls the additional area to scan before the
--overscan-bottom 0..4mm [inactive]
The bottom overscan controls the additional area to scan after the
paper end is detected.
--background-lines 0..50pel [inactive]
The background raster controls the additional background lines to
before the paper is feed through the scanner.
--brightness -100..100% (in steps of 1) 
Controls the brightness of the acquired image.
--contrast -100..100% (in steps of 1) 
Controls the contrast of the acquired image.
Turn on quality scanning (slower but better).
Do a quality white-calibration
--gamma-table 0..255,... [inactive]
Gamma-correction table. In color mode this option equally affects
red, green, and blue channels simultaneously (i.e., it is an
Gamma-correction table for the red band.
Gamma-correction table for the green band.
Gamma-correction table for the blue band.
--exposure 0..1000% (in steps of 1) [inactive]
Manual exposure adjustment.
Enable infra-red scan mode.
Enable multi-sample scan mode.
--frame 0..0 [inactive]
Selects the number of the frame to scan
--power-save-time <int> 
Allows control of the scanner's power save timer, dimming or turning
off the light.
Newer scanners can utilize this paper length to detect double
However some others (DM152) can get confused during media flush if
Tells page-flipping document scanners to flip the paper back to its
original orientation before dropping it in the output tray. Turning
this off might make scanning a little faster if you don't care about
manually flipping the pages afterwards.
Type ``scanimage --help -d DEVICE'' to get list of all options for DEVICE.
List of available devices:
Any help would be appreciated and would prefer to use the latest version.
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