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<TITLE>sane-devel: snapscan, problem in color mode : horizontal shift</TITLE>
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<H1>snapscan, problem in color mode : horizontal shift</H1>
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<STRONG>From:</STRONG> <A HREF="mailto:edrusb@free.fr?Subject=Re:%20snapscan,%20problem%20in%20color%20mode%20:%20horizontal%20shift&In-Reply-To=<979077663.3a5b8a1fd492a@imp.free.fr>"><EM>edrusb@free.fr</EM></A><BR>
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<STRONG>Date:</STRONG> Tue Jan 09 2001 - 14:01:03 PST
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Hi all,
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<BR>
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<P>I own an AGFA snapscan 310, which works fine under windows. It works also fine
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<BR>
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under Linux using SANE but only in LineArt and GreyScale. In color mode, I get
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<BR>
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an horizontal shift. After let's 30 perfectly scanned lines, (even without
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<BR>
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chroma offset), the next 30 lines are shifted right by around 30 dot, also
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<BR>
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appreas some chroma offset, and so on, periodically I get a block of lines
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<BR>
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without chroma offset, but still shifted right compared to the previous
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<BR>
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30-lines-group of scanned lines.
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<BR>
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<P>I couldn't find any faq, or mail in the archive of this mailing-list, or even
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<BR>
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documentation about this behaviour. I've compiled and installed without any
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<BR>
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problem the 1.0.4 backend and frontend packages. Maybe I did something in the
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<BR>
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wrong way ?
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<BR>
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<P>By the way, the size of the group of line depends on the width of the image,
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<BR>
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(larger image get smaller group of line), as well of the resolution, (at 75 dpi,
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<BR>
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I can get a reasonable size image without distortion, which is not true at 300
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<BR>
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dpi). It makes me think about a memory (buffer) size problem ? But I'm not an
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<BR>
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expert at all ... this is just a suggestions, in the case it can help understand
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<BR>
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what is the problem.
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<BR>
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<P>Thank you for any help.
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<BR>
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<P>Edrusb Dalton.
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20snapscan,%20problem%20in%20color%20mode%20:%20horizontal%20shift&In-Reply-To=<979077663.3a5b8a1fd492a@imp.free.fr>">majordomo@mostang.com</A>
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</PRE>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Jan 09 2001 - 13:38:25 PST</EM>
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