Hi Paul,
G. Paul Ziemba writes:
> There seems to be something wrong with the software deskew operation
> in SANE. I'm hoping someone can either confirm it is a bug or suggest
> alternate arguments to scanimage to fix the problem. I am also happy
> to modify C code and try patches.
I'm no expert here but looking at your images and the fujitsu backend
code,
- what does a swcrop'd only image look like?
- what if you add a call to buffer_crop before buffer_deskew in the
backend/fujitsu.c code?
The code currently has
/* finished buffering, adjust image as required */
if(s->swdeskew && (!s->hwdeskewcrop || s->req_driv_crop)){
buffer_deskew(s,s->side);
}
if(s->swcrop && (!s->hwdeskewcrop || s->req_driv_crop)){
buffer_crop(s,s->side);
}
The idea is to run crop, deskew, crop, so change that to
/* finished buffering, adjust image as required */
if((s->swdeskew && s->swcrop) && (!s->hwdeskewcrop || s->req_driv_crop)){
buffer_crop(s,s->side);
}
if(s->swdeskew && (!s->hwdeskewcrop || s->req_driv_crop)){
buffer_deskew(s,s->side);
}
if(s->swcrop && (!s->hwdeskewcrop || s->req_driv_crop)){
buffer_crop(s,s->side);
}
> Many thanks for your anticipated suggestions.
Hope this helps,
--
Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27
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