[sane-devel] Wrong colour scanning with HP 7400c
Erik P. Olsen
erik at epo.dk
Wed Apr 26 16:06:05 UTC 2006
Rene Rebe wrote:
> On Sunday 23 April 2006 23:28, Erik P. Olsen wrote:
>>> On Sunday 23 April 2006 13:02, Erik P. Olsen wrote:
>>>>> Aside the stripe the image is completely fine? Does it only happen when
>>>>> you scan the whole page? E.g. is due to some plastic on the side and
>>>>> the other software just allow scanning a smaller region? Or does it
>>>>> happen for scans in the middle of the page as well?
>>>> It does not happen with a smaller region. However, I can reduce the scan
>>>> by so small an amount that the yellow stripe will still show up just
>>>> smaller. But I can also see that the yellow stripe overlays the picture,
>>>> so it is not some plastic on the side or similar, it is actually induced
>>>> by the backend.
>>>> BTW, there is also a tiny green stripe about 1/5 of the width of the
>>>> yellow stripe.
>>> Hm, maybe then something is or got wrong for the 7400 calibration.
>> Anything I can do for the calibration?
> The calibration is done (for scanners requiring this) by the avision driver.
> Most probably some regression (e.g. support for other calibration data
> layout) was introduced since I know it noce works perfectly for the HP 7400.
> You can either try older versions and tell me which one work, read the
> svn history like svn log http://svn.exactcode.de/sane-avision/trunk or
> the code directory to find out where it goes wrong. I'll take a look in some
> days when the important stuff from my desk is done.
Where can I find the older versions?
Erik P. Olsen.
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