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<TITLE>sane-devel: Xsane-0.55: scan resolution selection (Epson 1200S,</TITLE>
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<META NAME="Subject" CONTENT="Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)">
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<H1>Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)</H1>
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<STRONG>From:</STRONG> John Vickers (<A HREF="mailto:jvickers@dial.pipex.com?Subject=Re:%20Xsane-0.55:%20scan%20resolution%20selection%20(Epson%201200S,%20CVS%20Sane)&In-Reply-To=<38AB25F0.33337B8A@dial.pipex.com>"><EM>jvickers@dial.pipex.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Feb 16 2000 - 14:34:24 PST
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Hello.
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<BR>
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<P>As the mostang.com seems to be down, I though I'd re-send this directly.
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<BR>
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<P>Xsane seems to report available scan resolutions inconsistently
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<BR>
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and sometimes incorrectly. Preview resolutions, however,
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<BR>
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are displayed correctly. Sorry if I'm missing something here about
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<BR>
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the Epson backend or about Xsane.
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<BR>
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<P>Regards,
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<BR>
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<P>John.
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<BR>
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<P><P>xsane-0.55, CVS sane of 14/02/2000. Epson 1200S (i.e. SCSI) scanner.
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<BR>
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<P>The set of resolutions reported by the scanner as supported is:
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<BR>
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50 60 72 75 80 90 100 120
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<BR>
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133 144 150 160 175 180 200 216
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<BR>
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240 266 300 320 350 360 400 480
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<BR>
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600 720 800 900 1200 1600 1800 2400
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<BR>
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(all in dpi)
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<BR>
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<P>Exactly this set of resolutions is presented by xscanimage,
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<BR>
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and by the *preview* resolution slider in xsane.
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<BR>
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<P>However, the scan resolution *list* presented by xsane is:
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<BR>
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75 96! 100 120
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<BR>
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150 200
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<BR>
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240 300 400 480
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<BR>
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600 800 1200 1600 1800 1920! 2000! 2100! 2160! 2400
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<BR>
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<P>So somehow, several values have got lost, and some spurious extra values
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<BR>
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have appeared.
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<BR>
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<P><P>The main scan resolution *slider* allows selection of resolutions
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<BR>
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from 50 to 2400 dpi, in 1 dpi units. I think that this should
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<BR>
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behave like the preview slider, with only supported resolutions
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<BR>
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being selectable. Internally, as Oliver has pointed out before,
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<BR>
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the current slider code uses the nearest supported resolution to
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<BR>
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the selected resolution, as can be seen from the reported image size.
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<BR>
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<BR>
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<P><P>I think the sliders would be more useful if the available resolutions
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<BR>
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were more evenly spaced on the slider: perhaps they could be exactly
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<BR>
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evenly spaced, or perhaps the slider could use a logarithmic scale.
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<BR>
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<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:%20Xsane-0.55:%20scan%20resolution%20selection%20(Epson%201200S,%20CVS%20Sane)&In-Reply-To=<38AB25F0.33337B8A@dial.pipex.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0181.html">John Vickers: "Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Wed Feb 16 2000 - 23:37:54 PST</EM>
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