On Mon, Jan 31, 2011 at 4:07 PM, stef <stef.dev at free.fr> wrote: > Le Sunday 30 January 2011 19:46:00 Brian Shaver, vous avez ?crit : > > Thanks Stef! > > > > Let me know if you'd like any additional information, or if I can be any > > help with the fix. > > > > Thanks, > > Brian .. > > > > On Sun, Jan 30, 2011 at 2:36 AM, stef <stef.dev at free.fr> wrote: > > > Le Saturday 29 January 2011 21:26:03 Brian Shaver, vous avez ?crit : > > > > allan, > > > > If I comment out the function call which was causing the crash, then > > > > I'm able to run with a high genesys debug level. This function call > > > > was just for debug purposes to create the "unprocessed.pnm" file. The > > > > following commands were executed with: > > > > > > > > SANE_DEBUG_GENESYS=255 > > > > SANE_DEBUG_SANEI_MAGIC=255 > > > > > > > > ./scanimage --mode Lineart --resolution 100 -l 21.4 -t 79.7 -x 148.7 > -y > > > > 138.9 --swdespeck=yes > /tmp/despeck.pnm 2> /tmp/despeck.log > > > > > > > > ./scanimage --mode Lineart --resolution 100 -l 21.4 -t 79.7 -x 148.7 > -y > > > > 138.9 > /tmp/no_despeck.pnm 2> /tmp/no_despeck.log > > > > > > > > Attached are the images and log files. The black band at the bottom > of > > > > > > the > > > > > > > despeck image does not change size based on the despeck value. > > > > > > > > Thanks, > > > > Brian .. > > > > > > > > On Sat, Jan 29, 2011 at 11:30 AM, m. allan noah <kitno455 at gmail.com> > > > > > > wrote: > > > > > brian- I did not write the genesys backend, but I did write the > > > > > sanei_magic library that it uses to provide the swdespeck option. > It > > > > > would be interesting to see a low resolution version of the two > > > > > images, and a log with: > > > > > > > > > > SANE_DEBUG_SANEI_MAGIC=255 > > > > > > > > > > combined with whatever the highest debug level genesys will give > > > > > without crashing. > > > > > > > > > > allan > > > > > > > > > > On Fri, Jan 28, 2011 at 8:19 AM, Brian Shaver < > shakerlxxv at gmail.com> > > > > > > > > > > wrote: > > > > > > I'm using the Lineart mode and trying the --swdespeck option and > > > > > > I've noticed its leaving a black band along the bottom of the > > > > > > image. The 2nd issue, is that when I turn the debug up ( > > > > > > SANE_DEBUG_GENESYS=10 > > > > > > > > > ) and try the same scan, the process seg faults. The following is > > > > > > the stack from the core: > > > > > > (gdb) bt > > > > > > #0 0x00007fa3e4ce35c8 in sanei_genesys_write_pnm_file > > > > > > (filename=0x7fa3e4cec479 "unprocessed.pnm", > > > > > > > > > > > > data=0x7fa3e2267000 <Address 0x7fa3e2267000 out of bounds>, > > > > > > depth=1, > > > > > > > > > > > > channels=1, pixels_per_line=2360, lines=3188) > > > > > > > > > > > > at genesys_low.c:144 > > > > > > > > > > > > #1 0x00007fa3e4caa60f in genesys_buffer_image (s=0x99e340) at > > > > > > genesys.c:6895 > > > > > > #2 0x00007fa3e4caccab in sane_genesys_start (handle=0x99e340) at > > > > > > genesys.c:7864 > > > > > > #3 0x00007fa3eae33ae2 in sane_dll_start (handle=0x99b2a0) at > > > > > > dll.c:1263 #4 0x00007fa3eae20d38 in sane_start (h=0x99b2a0) at > > > > > > dll-s.c:48 #5 0x0000000000406d1c in main (argc=13, > > > > > > argv=0x7fffe2b73a08) at scanimage.c:2283 > > > > > > > > > > > > The code is trying to write out a file ( unprocessed.pnm ) > > > > > > containing > > > > > > > > ... I > > > > > > > > > > > think the Lineart converted data before performing the despeck > > > > > > process. > > > > > > > > > I'd be happy to help with a fix for this, or provide further > > > > > > information > > > > > > > > > > or > > > > > > > > > > > testing. > > > > > > Thanks, > > > > > > Brian .. > > > > > > -- > > > > > > sane-devel mailing list: sane-devel at lists.alioth.debian.org > > > > > > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > > > > > > Unsubscribe: Send mail with subject "unsubscribe your_password" > > > > > > > > > > > > to sane-devel-request at lists.alioth.debian.org > > > > > > > > > > -- > > > > > "The truth is an offense, but not a sin" > > > > > > > > Hello, > > > > > > thanks for providing these detailed information. For the crash, > > > the > > > > > > image > > > writing function doesn't handle line art bitmap format. I'm currently > > > fixing > > > that. For the black band, it is due to incorrect settings in registers > in > > > line > > > art mode which makes the backend reading too much data from the > scanner. > > > This > > > extra data is filled with 'noise'. I am currently looking into that. > > > > > > Regards, > > > > > > Stef > > Hello, > > I have committed the fix for this bug. Now image size will be > correct. > The logging issue is also fixed. You may try the latest git source code. > > Regards, > Stef >
Stef, When I test with these latest changes, they do address the issues referenced in this thread; however, I'm seeing an increase in the noise in the image. Just to make sure I rolled back a couple days and re-scanned the same images again. The additional noise is present both with and without the swdespeck option. I'm attaching sample images. Any ideas? Thanks, Brian .. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110131/da5bbf8a/attachment-0001.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: despeck.pnm.gz Type: application/x-gzip Size: 8409 bytes Desc: not available URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110131/da5bbf8a/attachment-0004.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: despeck_old.pnm.gz Type: application/x-gzip Size: 7035 bytes Desc: not available URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110131/da5bbf8a/attachment-0005.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: no_despeck.pnm.gz Type: application/x-gzip Size: 11773 bytes Desc: not available URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110131/da5bbf8a/attachment-0006.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: no_despeck_old.pnm.gz Type: application/x-gzip Size: 7313 bytes Desc: not available URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20110131/da5bbf8a/attachment-0007.bin>
