I have just committed a fix in e4aed53a1e46b9d46a76f814d414ef8d2c2276e3. If you are able, I would appreciate if you could test it.
allan On Wed, Oct 5, 2016 at 8:19 PM, m. allan noah <kitno...@gmail.com> wrote: > It looks like commit 96628ed13f411298ee0681e7515745fdf85d1309 is the > culprit. This change enabled the image processing functions by > default, but that seems to have disabled the threshold algorithm in > the scanner. I will look for an alternative implementation. > > allan > > On Tue, Oct 4, 2016 at 7:49 PM, m. allan noah <kitno...@gmail.com> wrote: >> Mickael, thank you for the report. I thought I had fixed this problem >> previously, but I am apparently wrong. I will investigate. >> >> allan >> >> On Mon, Oct 3, 2016 at 12:13 PM, PELUARD Mickael >> <mickael.pelu...@smart-rx.com> wrote: >>> Hello, >>> >>> >>> >>> 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. >>> >>> >>> >>> We have recently changed to RHEL-6 with sane-backends-1.0.21 >>> and to Debian with libsane-1.0.25. >>> >>> >>> >>> 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 >>> >>> 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. >>> >>> >>> >>> Using a reference document, we get the following results with a fi-6110 : >>> >>> - Rhel-6 / sane-1.0.21 = around 50 ko >>> >>> - Debian / sane-1.0.25-2 = around 350 ko >>> >>> It’s quite the same problem if we used a fi-5110c and fi-5120c. >>> >>> >>> >>> I downgrade the libsane package and look the result : >>> >>> - Debian / libsane-1.0.22-7 = good >>> >>> - Debian / libsane-1.0.23-3+b1 = good >>> >>> - Debian / libsane-1.0.24-1 = NOT GOOD >>> >>> - Debian / libsane-1.0.24-8u5 = NOT GOOD >>> >>> - Debian / libsane-1.0.26Git = NOT GOOD >>> >>> >>> >>> 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. >>> >>> To reduce the problem, I play with the contrast and brightness option but >>> the result is not entirely satisfactory. >>> >>> >>> >>> I think the problem is on the threshold option of the fujitsu backends. >>> >>> >>> >>> It is probably the same bug but it don’t lokk corrected in 1.0.26 : >>> >>> https://alioth.debian.org/tracker/?group_id=30186&atid=410366&func=detail&aid=315069 >>> >>> >>> >>> Cordially. >>> >>> >>> -- >>> sane-devel mailing list: sane-devel@lists.alioth.debian.org >>> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel >>> Unsubscribe: Send mail with subject "unsubscribe your_password" >>> to sane-devel-requ...@lists.alioth.debian.org >> >> >> >> -- >> "well, I stand up next to a mountain- and I chop it down with the edge >> of my hand" > > > > -- > "well, I stand up next to a mountain- and I chop it down with the edge > of my hand" -- "well, I stand up next to a mountain- and I chop it down with the edge of my hand" -- sane-devel mailing list: sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-requ...@lists.alioth.debian.org
