kopia lustrzana https://gitlab.com/sane-project/backends
133 wiersze
4.3 KiB
Groff
133 wiersze
4.3 KiB
Groff
.TH sane-canon 5 "29 May 2001"
|
|
.IX sane-canon
|
|
.SH NAME
|
|
sane-canon - SANE backend for Canon flatbed scanners
|
|
.SH DESCRIPTION
|
|
The
|
|
.B sane-canon
|
|
library implements a SANE (Scanner Access Now Easy) backend that
|
|
provides access to the following Canon flatbed scanners:
|
|
.PP
|
|
.RS
|
|
CanoScan 300
|
|
.br
|
|
CanoScan 600
|
|
.br
|
|
CanoScan 2700F
|
|
.br
|
|
.RE
|
|
.PP
|
|
No parallel port and USB scanners are supported and there are no plans to
|
|
support them in the future.
|
|
.PP
|
|
IMPORTANT: this is alpha code. Don't expect this to work
|
|
correctly. Many functions are missing, others contain errors. In some
|
|
cases, your computer might even hang. It cannot be excluded (although
|
|
I consider it extremely unprobable) that your scanner will be
|
|
damaged.
|
|
.PP
|
|
That said, TESTERS ARE WELCOME. Send your bug reports and comments to
|
|
Manuel Panea <mpd@rzg.mpg.de>.
|
|
.PP
|
|
.SH "DEVICE NAMES"
|
|
This backend expects device names of the form:
|
|
.PP
|
|
.RS
|
|
.I special
|
|
.RE
|
|
.PP
|
|
Where
|
|
.I special
|
|
is the path-name for the special device that corresponds to a
|
|
SCSI scanner. The special device name must be a generic SCSI device or a
|
|
symlink to such a device. The program
|
|
.IR sane-find-scanner
|
|
helps to find out the correct device. Under Linux, such a device name
|
|
could be
|
|
.I /dev/sga
|
|
or
|
|
.IR /dev/sge ,
|
|
for example. See sane-scsi(5) for details.
|
|
|
|
.SH CONFIGURATION
|
|
The contents of the
|
|
.I canon.conf
|
|
file is a list of device names that correspond to Canon
|
|
scanners. Empty lines and lines starting with a hash mark (#) are
|
|
ignored. Only one device name can be listed in
|
|
.IR canon.conf .
|
|
|
|
.SH TIPS
|
|
.PP
|
|
When scanning either slides or negatives, I found that I must set the
|
|
gamma value to something about 2.2 to 2.4 (I set the same value for all
|
|
three red, green, blue). Also, for slides, using "Auto Exposure" helps
|
|
a lot.
|
|
.PP
|
|
The "Auto Exposure" function for slides makes the scanner do a first
|
|
pass on the film to determine the Highlight and Shadow point
|
|
values. The "Auto Focus" function triggers yet another pass to
|
|
determine the focus value. After that, the real scanning pass takes
|
|
place. The "Auto Exposure" function is not available for negatives yet.
|
|
.PP
|
|
Even after "Auto Focus", the image I get is often a bit too
|
|
blurred. I found that using the GIMP to do a
|
|
"Filter->Enhance->Sharpen" at about 40 to 60 improves the image
|
|
quite a bit. In fact, I find it so good that I might implement a
|
|
sharpen filter into the backend in the future.
|
|
.PP
|
|
The "native" scanner resolutions of the 2700F are the integer
|
|
sub-multiples of 2720 dpi, i.e. 1360, 680, 340 and 170. You can scan
|
|
at any other resolution, but you will notice that the image has
|
|
noticeably more jaggies that when using one of the "native"
|
|
resolutions.
|
|
.PP
|
|
.SH FILES
|
|
.TP
|
|
.I @CONFIGDIR@/canon.conf
|
|
The backend configuration file (see also description of
|
|
.B SANE_CONFIG_DIR
|
|
below).
|
|
.TP
|
|
.I @LIBDIR@/libsane-canon.a
|
|
The static library implementing this backend.
|
|
.TP
|
|
.I @LIBDIR@/libsane-canon.so
|
|
The shared library implementing this backend (present on systems that
|
|
support dynamic loading).
|
|
.SH ENVIRONMENT
|
|
.TP
|
|
.B SANE_CONFIG_DIR
|
|
This environment variable specifies the list of directories that may
|
|
contain the configuration file. Under UNIX, the directories are
|
|
separated by a colon (`:'), under OS/2, they are separated by a
|
|
semi-colon (`;'). If this variable is not set, the configuration file
|
|
is searched in two default directories: first, the current working
|
|
directory (".") and then in @CONFIGDIR@. If the value of the
|
|
environment variable ends with the directory separator character, then
|
|
the default directories are searched after the explicitly specified
|
|
directories. For example, setting
|
|
.B SANE_CONFIG_DIR
|
|
to "/tmp/config:" would result in directories "tmp/config", ".", and
|
|
"@CONFIGDIR@" being searched (in this order).
|
|
.TP
|
|
.B SANE_DEBUG_CANON
|
|
If the library was compiled with debug support enabled, this
|
|
environment variable controls the debug level for this backend. Higher
|
|
debug levels increase the verbosity of the output.
|
|
|
|
Example:
|
|
export SANE_DEBUG_CANON=4
|
|
|
|
.SH "SEE ALSO"
|
|
sane(7), sane\-scsi(5), sane\-find\-scanner(1)
|
|
.br
|
|
http://www.rzg.mpg.de/~mpd/sane/
|
|
.br
|
|
@DOCDIR@/canon/canon.install2700F.txt (installation of a CanoScan 2700F)
|
|
.br
|
|
.SH AUTHOR
|
|
Helmut Koeberle, Manuel Panea, and Markus Mertinat
|
|
.br
|
|
Man page by Henning Meier-Geinitz (mostly based on canon.README)
|