297 lines
5.4 KiB
HTML
297 lines
5.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Testing Your Scanner</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="The Scanner HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="SANE"
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HREF="sane.html"><LINK
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REL="NEXT"
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TITLE="SANE Frontends"
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HREF="frontends.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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SUMMARY="Header navigation table"
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WIDTH="100%"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>The Scanner HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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HREF="sane.html"
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ACCESSKEY="P"
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>Prev</A
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WIDTH="80%"
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VALIGN="bottom"
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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HREF="frontends.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="TESTING"
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></A
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>5. Testing Your Scanner</H1
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><P
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>Once you've completed all of the above, you're ready to test your scanner equipment.
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This section assumes your scanner is turned on and has been attached through the appropriate interface.
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If you have a SCSI or a USB scanner, at the command line you can issue the following command:</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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>$ sane-find-scanner</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>...which should find and identify your scanner from a list of possible devices. (Note to Debian users: starting with Sarge, or unstable, sane-find-scanner is available in the 'sane-utils' package. In Woody it is available in the 'libsane' package.)
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If your scanner is a type not looked for by <B
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CLASS="COMMAND"
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>sane-find-scanner</B
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>, you can try as root
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<B
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CLASS="COMMAND"
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>scanimage --list-devices</B
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>
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which should yield information about attached devices. For example, this is the output on my system:
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<TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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>device `v4l:/dev/video0' is a Noname BT878 video (Hauppauge (bt878)) virtual device
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device `epson:/dev/scanner0' is a Epson Perfection1240 flatbed scanner</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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whereas when using libusb it registers as
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<TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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>device `v4l:/dev/video0' is a Noname BT878 video (Hauppauge (bt878)) virtual device
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device `epson:libusb:001:003' is a Epson Perfection1240 flatbed scanner</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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Make note of the 'backend:device' information obtained; this will be our device name to specifically access the scanner from the command line.
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Also, be aware that sane-find-scanner is a separate utility that does not guarantee support under SANE, it only looks for devices that claim to be scanners. </P
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><P
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>Next you should test the scanner's image grabbing ability.
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You can use either one of the frontends listed in <A
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HREF="frontends.html"
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>Section 6</A
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> or at the command line if you wish with the following:</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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>$ scanimage -d backend:/dev/scanner --format pnm > outfile.pnm</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>Thus if you use the Epson backend, for example, the command would be as follows:</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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>$ scanimage -d epson:/dev/scanner --format pnm > outfile.pnm</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>You only need the <B
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CLASS="COMMAND"
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>-d</B
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> option if you have more than one scanner and want to select which one to use.
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For example, if you have an Epson and a Mustek scanner, using "-d epson" or "-d mustek" should be enough.
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The complete path is only needed if you have more that one scanner supported by the same backend.
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Obviously <B
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CLASS="COMMAND"
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>/dev/scanner</B
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> should be substituted with whatever scanner device you've configured (e.g., <TT
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CLASS="FILENAME"
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>/dev/video0</TT
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> in the case of a v4l device, and libusb as seen in the sane-find-scanner example above).
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The <B
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CLASS="COMMAND"
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>--format</B
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> switch can be either pnm or tiff, but if left out will default to pnm.
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See <B
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CLASS="COMMAND"
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>man scanimage</B
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> for more obscure but useful options.
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The '.pnm' format stands for 'portable anymap,' a common image format for graphical files in Linux that can be converted to nearly any other image format with <A
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HREF="http://www.imagemagick.org/"
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TARGET="_top"
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>Imagemagick</A
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> or <A
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HREF="http://netpbm.sourceforge.net/"
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TARGET="_top"
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>netpbm</A
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>.</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="sane.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="frontends.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>SANE</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>SANE Frontends</TD
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></TR
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></BODY
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> |