[sane-devel] can the positions in the negative holder be added the epson backend

Karl Heinz Kremer khk@khk.net
Wed, 24 Jul 2002 18:59:39 -0400

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The negative holders / slide holdes are different for the different
scanners. This would make it pretty complicated to support all the
models. Also, there are not just 35mm negatives/slides, you have=20
different mid-formats as well, and this really makes it a job that
I don't want to take on.=20

I think this should go into the frontends (makes it less work for me :-)
Usually negatives or slides are arranged in a grid (e.g. 2 rows with
five iamges per row, or 4 rows with 4 images). Once the size of the image
is known, and the distance between the images, it would be fairly easy
to jump from image to image. But this of course would not help with

But then again, what do I know about frontend programming ? :-)

Karl Heinz

On Wed, Jul 24, 2002 at 11:52:31PM +0100, rob wrote:
> Hi,
> sorry about the long and unwieldly subject but I couldn't think of a
> shorter way of saying it.=20
> Would it be possible to add the positions of the negatives in the
> negative holder to the --quick-format option so that I could go
> something like:
> scanimage --quick-format negative3 > myNegative.pnm
> and get back a scan of the 3rd negative in the negative holder.
> or even better --quick-format negative1-12 and get back 12 individual
> scans of the negatives (or perhaps scanning multiple negatives would be
> better left to xsane).
> I can give you the dimensions for the negative and slide holder that
> come with the epson 2450 I don't know if they're the same for other
> models.
> This would be massively useful as scanning more than 1 negative just
> isn't possible with xsane. And is only possible with scanimage if you
> write a script to calculate the positions of the negatives, which is
> real pain and probably beyond many users (Roland Roberts was kind enough
> to provide me with a script that has this functionality).
> thanks
> --=20
> rob
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Karl Heinz Kremer                                  khk@khk.net
PGP Key at                 http://www.khk.net/download/khk.asc
EPSON Sane Backend:                         http://www.khk.net

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