kopia lustrzana https://gitlab.com/sane-project/backends
112 wiersze
3.4 KiB
Groff
112 wiersze
3.4 KiB
Groff
.TH sane\-canon 5 "11 Jul 2008" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
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.IX sane\-canon
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.SH NAME
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sane\-canon \- SANE backend for Canon SCSI scanners
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.SH DESCRIPTION
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The
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.B sane\-canon
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library implements a SANE (Scanner Access Now Easy) backend that
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provides access to the following Canon flatbed and film scanners:
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.PP
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.RS
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CanoScan 300
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.br
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CanoScan 600
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.br
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CanoScan FB620S
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.br
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CanoScan FB1200S
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.br
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CanoScan FS2700F
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.br
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CanoScan FS2710S
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.br
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.RE
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.PP
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Parallel port and USB scanners are not supported by this backend; see
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the manual pages for
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.BR sane\-canon_pp (5)
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and
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.BR sane\-canon630u (5)
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for further information.
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.PP
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IMPORTANT: This is beta code. We tested the code on the scanners listed
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above, using the computers and operating systems available to us, but we
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cannot guarantee that the backend will work smoothly with future operating
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systems, SCSI adapters, SANE frontend programs, or Canon scanners not
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contained in the list above. In some cases your computer might even hang.
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It cannot be excluded (although we consider it extremely unlikely) that your
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scanner will be damaged.
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.PP
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That said, TESTERS ARE WELCOME. Send your bug reports and comments to
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Manuel Panea
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.IR <mpd@rzg.mpg.de> ;
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for questions concerning the FB620 and FB1200S contact Mitsuru Okaniwa
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.IR <m\-okaniwa@bea.hi\-ho.ne.jp> ,
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for the FS2710S Ulrich Deiters
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.IR <ukd@xenon.pc.uni\-koeln.de> .
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.SH TIPS (FS2700F)
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.PP
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Scanning either slides or negatives has been found to require rather
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large gamma corrections of about 2.2 to 2.4 (same value for red, green,
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and blue). It is recommended to use the automatic exposure controls
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of the frontend
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.BR xsane (1)
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for best results.
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.PP
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The "Auto Focus" function triggers a special pass to determine the focus
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value. After that, the real scanning pass takes place.
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.PP
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Even with "Auto Focus" turned on, the scanned image is often a bit too
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blurred. Using the
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.BR gimp (1)
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to do a "Filter->Enhance->Sharpen" at about 40 to 60 improves the image
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considerably.
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.SH TIPS (FS2710S)
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.PP
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Gamma corrections are done not by the scanner, but by the backend.
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The scanner is always run in 12-bit mode. In "color" mode the image
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data are corrected for gamma, shadow point, etc., and then truncated
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to 8-bit intensities; the default gamma value is 2.0. In "raw" mode the
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image data are exported without corrections as 16-bit intensities; this
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mode can be recommended if extensive adjustments have to be made to a
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picture (and if the frontend can handle 16-bit intensities).
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.PP
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Negatives are handled by simple color inversion and will require manual
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removal of blue discoloration.
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.PP
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.SH FILES
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.TP
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.I @LIBDIR@/libsane\-canon.a
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The static library implementing this backend.
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.TP
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.I @LIBDIR@/libsane\-canon.so
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The shared library implementing this backend (present on systems that
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support dynamic loading).
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.SH ENVIRONMENT
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.TP
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.B SANE_DEBUG_CANON
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If the library was compiled with debug support enabled, this
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environment variable controls the debug level for this backend. Higher
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debug levels increase the verbosity of the output.
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Example:
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export SANE_DEBUG_CANON=4
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.SH "SEE ALSO"
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.BR sane\-scsi (5)
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.br
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.I http://www.rzg.mpg.de/~mpd/sane/doc/canon.install2700F.txt
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(installation of a CanoScan 2700F)
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.br
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.SH AUTHOR
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Helmut Koeberle, Manuel Panea, and Markus Mertinat;
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.br
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FB620S and FB1200S support by Mitsuru Okaniwa;
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.br
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FS2710S support by Ulrich Deiters
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.br
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Man page by Henning Meier-Geinitz (mostly based on canon.README)
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