[sane-devel] colors messed up (scanjet 4370)

Ian van der Neut ivdneut at gmail.com
Sat Mar 14 14:18:52 UTC 2009

On Fri, Mar 13, 2009 at 11:41 PM, Ian van der Neut <ivdneut at gmail.com> wrote:
> On Fri, Mar 13, 2009 at 11:14 PM, JKD <jkdsoft at gmail.com> wrote:
>> On Friday 13 March 2009 22:39:33 Ian van der Neut wrote:
>>> Hello all,
>>> I searched the archives and googled, but I can't find anything that
>>> resembles my problem. The problem is illustrated by the images:
>>> http://apache.dataloss.nl/~ian/img.png which was scanned with:
>>> $ scanimage --mode Gray > img.pnm (the pnm images are also under the same
>>> url). This one looks as expected, however, there's color on the paper, that
>>> I'd like to see, so I scanned with:
>>> scanimage --mode Color > imgcolor.pnm This results in:
>>> http://apache.dataloss.nl/~ian/imgcolor.png As you can see, the bottom
>>> part is displayed five times, then a part just above the middle, then
>>> a part just above that. Also, the CMYK colors are positioned offset
>>> from eachother, except the bottom part for the first time.
>>> Does anyone give me some pointers as to how to fix this, or could this
>>> be a problem with the scanner itself? I'm not very experienced with
>>> scanning.
>> I've got a HP4370 and I can not reproduce your problem but try latest code
>> located at sourceforge's SVN server:
>> https://sourceforge.net/scm/?type=svn&group_id=150599
>> Latest version implements native calibration in reflective scans. More info
>> can be found at:
>> https://sourceforge.net/forum/forum.php?thread_id=3023691&forum_id=503228
> I compiled the code, but it's still messed up, but differently:
> http://apache.dataloss.nl/~ian/imgcolor2.png (the pnm is also there)
> I'll check with a windows box tomorrow or so to make sure it's not the
> scanner itself that is broken. Thank you so far.

Just confirmed with a windows laptop that the scanner works fine, so
it's either something in the Linux box (Ubuntu 8.04, hardy heron)
hardware (usb) or software (sane)... other usb devices (phone, camera,
etc) work ok.

Thank you in advance for any pointers, suggestions etc...


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