Daniel> Ole Gerden wrote:
>> I have got a Mustek Scanexpress 12000SP and have another problem:
>> Scanning in gray- and colourmode only works correct in low
>> resolution or if the scanwidth is reduced. In other modes the
>> result contains some horizontal stripes in irregular
>> distances. It seems so that the imagedata in these stripes is
>> shifted to the left or right. In these memory-hungry modes the
>> scanner also sometimes pauses while scanning (undependant of
>> strip-height). But I do not know if this normal.
Daniel> I have been experiencing the same problem with a Mustek
Daniel> MFS-12000SP (firmware v1.02) and found this was caused by
Daniel> sending the gamma correction values to the scanner
Daniel> twice. The following patch completely cured this problem for
Daniel> me (it also removes two superfluous lines of code):
Daniel> [snip]
Daniel> Could people with other Mustek scanners please check if this
Daniel> patch has any adverse effects for them?
Daniel> Hope this helps (without triggering new problems :-/), Dan
Unfortunately, some Mustek scanners require the gamma table to be sent
before the start_scan() call, while others need it afterwards. If the
MFS-12000SP can't tolerate the the gamma table before start_scan(),
then we should omit it only for those versions that don't tolerate it.
Do you know whether the gamma problems exist with firmware version
v1.02 only or whether it exists for all MFS-12000SP versions?
--david
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