Hi,
I'm a little puzzled; I'm trying to scan some light-gray text on white
paper. I can accomplish a particular scan settings with gimp plugin, but
not with "scanimage" frontend :
ps auxwww | grep scan
... /usr/lib/gimp/1.0/plug-ins/xscanimage -gimp 11 9 64 64
here I have set the gimp's dialog box to :
resolution 300
scan speed 1
exposure -18
brightness -100
contrast 49
white level 255
black level 180
midtone 183
no gamma
... dimensions ...
with the above through gimp plugin, things work, I get pretty good
results,
but when I try to use command line settings, it doesn't seem to help
any. This command :
scanimage -d net:fred:microtek:/dev/scanner -v --exposure -18 --mode LineArt --resolution 300 -l 0in -t 0in -x 3.49in -y 02.00in --brightness -98 --contrast 48 --white-level 255 --black-level 180 --midtone 183
has only little better visual results than this command :
scanimage -d net:fred:microtek:/dev/scanner -v --exposure -18 --mode LineArt --resolution 300 -l 0in -t 0in -x 3.49in -y 02.00in
both of them are ways away from the gimp plugin results.
What can be wrong ? It looks like the command line may be interpretted
incorrectly / differently from the gimp's plugin. I.e. although given same
user-supplied values, the scanimage frontend may be sending different data
to the backend than the gimp plugin.
How can I find out what's wrong ? Is there a way to turn on debugging on
saned to find out what params it's receiving from either of the frontends
? I tried manually starting "/usr/sbin/in.saned -d128", but no useful
debug was forthcoming. Even with "/usr/sbin/in.saned -d" I only got basic
debug. (see below)
my setup :
Microtek ScanMaker E3
on the client :
# rpm -qa | grep sane
sane-1.0.2-2mdk
$ uname -a
Linux darkstar 2.2.14 #3 Tue Jan 11 17:50:01 EST 2000 i586 unknown
on the sane server :
# rpm -qa | g sane
sane-1.0.2-3mdk
# cat /etc/sane.d/saned.conf | grep -v '^#'
darkstar
localhost
127.0.0.1
# cat /etc/sane.d/microtek.conf
# Uncomment following line to disable "real calibration" routines...
norealcal
# Uncomment following line to disable "clever precalibration" routines...
#noprecal
# Using "norealcal" will revert backend to pre-0.11.0 calibration code.
scsi * * Scanner
/dev/scanner
TIA,
Jan
--
-- Gospel of Jesus is the saving power of God for all who believe --
## To some, nothing is impossible. ##
http://Vicherek.Waterloo.on.ca/
Jul 16 20:42:06 sane_server saned[4394]: access by saned-user@sane_client accepted
Jul 16 20:42:06 sane_server saned[4394]: process_request: got request 2
Jul 16 20:42:07 sane_server saned[4394]: process_request: got request 4
Jul 16 20:42:07 sane_server saned[4394]: process_request: got request 5
Jul 16 20:42:07 sane_server last message repeated 7 times
Jul 16 20:42:07 sane_server saned[4394]: process_request: got request 4
Jul 16 20:42:07 sane_server saned[4394]: process_request: got request 5
Jul 16 20:42:07 sane_server last message repeated 16 times
Jul 16 20:42:07 sane_server saned[4394]: process_request: got request 7
Jul 16 20:42:07 sane_server saned[4394]: start_scan: using port 1870 for data
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: processing RPC request on fd 4
Jul 16 20:42:10 sane_server saned[4394]: process_request: got request 6
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 8188 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 8192 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 4438 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 4442 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: read 4438 bytes from scanner
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 3750 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: wrote 697 bytes to client
Jul 16 20:42:10 sane_server saned[4394]: do_scan: done, status=End of file reached
Jul 16 20:42:10 sane_server saned[4394]: process_request: got request 8
Jul 16 20:42:10 sane_server saned[4394]: process_request: got request 3
Jul 16 20:42:10 sane_server saned[4394]: process_request: got request 10
Jul 16 20:42:10 sane_server saned[4394]: exiting
--
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This archive was generated by hypermail 2b29 : Sun Jul 16 2000 - 14:07:12 PDT