[Hp5400backend-devel] changes in calibration for high resolution scans

[Thomas S. <sou...@ne...>]

Hi,

Bertrik was right about the problem of calibration for high resolution sc=
ans.=20
I enlarged the calibration data sent, depending on dpi and it works bette=
r.
There are still small vertical black areas =3D> calibration data is not c=
orrect.
Anyway, calibration data have to be fully computed because currently it i=
s the=20
same small amount of data replicated as much as needed.

It seems that 2400 dpi is broken so I disabled the 2400 dpi option of the=
 gui=20
for the moment. You have to define SUPPORT_2400_DPI in sane-hp5400.c to h=
ave=20
it back.

I commited the changes as it makes the scanner works better with 1200 dpi=
=2E=20
I'll have a look later to see how to calculate the correct data of the=20
calibration.

Have a nice day,

Thomas.