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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> <span lang="EN-US">we used Fujitsu scanner (fi-5110 / fi-5120 / fi-6110) for a long time with an old linux plateform and sane (1.0.22-9). These scanners used the fujitsu backend.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> We have recently changed to RHEL-6 with sane-backends-1.0.21 and to Debian with libsane-1.0.25.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> We scan in lineart mode and we only put the threshold option to reduce the size of document : scanimage –d ‘fujitsu:XXX:XXX’ --resolution 150 --mode lineart --threshold 140<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Then we convert the image to PDF-A1. With the old plateform and rhel-6, no problem. But with Debian and sane-1.0.25, the size of the documents increase a lot.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Using a reference document, we get the following results with a fi-6110 :<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Rhel-6 / sane-1.0.21 = around 50 ko<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Debian / sane-1.0.25<span style="color:#1F497D">-2</span> = around 350 ko<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It’s quite the same problem if we used a fi-5110c and fi-5120c.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I downgrade the libsane package and look the result :<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Debian / libsane-1.0.22-7 = good<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Debian / libsane-1.0.23-3+b1 = good<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Debian / libsane-1.0.24-1 = NOT GOOD<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Debian / libsane-1.0.24-8u5 = NOT GOOD<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Debian / libsane-1.0.26Git = NOT GOOD<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">I change the value of threshold on Debian with sane-1.0.25 : threshold 0 or 200. But the image don’t change. It’s look like the threshold option has not effect.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US">To reduce the problem, I play with the contrast and brightness option but the result is not entirely satisfactory.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I think the problem is on the threshold option of the fujitsu backends.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It is probably the same bug but it don’t lokk corrected in 1.0.26 :
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><a href="https://alioth.debian.org/tracker/?group_id=30186&atid=410366&func=detail&aid=315069"><span lang="EN-US">https://alioth.debian.org/tracker/?group_id=30186&atid=410366&func=detail&aid=315069</span></a></span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Cordially.<o:p></o:p></span></p>
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