[sane-devel] Avision (HP5370) shifting image problem

[Dan McGhee]

René Rebe wrote:

>Hi all,
>
>Falk Rohsiepe did some excellent work to get the devices affected by some 
>strange off-by-one error delivering shifted images to work.
>
>I still need to review it closely and merge / test with the devices I have 
>access too.
>
>Please find his patch attached for review / testing.
>  
>
I am reporting major success with the patch you supplied.  Thank you 
very much.  As recently as sane-backends-1.0.16 with the avision source 
of build 280, I had never been able to get my 5370C working correctly.  
I applied your patch against sane-backends-1.0.16--it wouldn't apply 
properly to the version of avision that I got from SVN--and the scanner 
worked very well.

I still do not know what was causing my prior failures, but I know that 
this patch made almost everything work.

The only problem that exists right now is that I do not have a "preview 
image."  This is true in both <xscanimge> and <xsane>.  When I select 
"acquire preview," the scanner scans, but there is only a grey, with 
lightly colored lines, image in the preview window.  As a result, I must 
scan multiple images, adjusting the parameters of gamma, brightness and 
contrast, until I get a good image.

I have generated a log file with the debug level set at 10.  There's 
lots and lots of output.  Is there anything for which I can "grep" or 
should I lower the debug level and send the complete results?

Once again, both Rene and Falk, thank you.

Dan