[sane-devel] issue with scanning at higher resolutions

[jouthuis at dds.nl]

Well, my point was that I would like to have some kind of wysiwyg (with respect
to _size_, that is) for scanning.

At this moment, after scanning at 200x200 dpi I have to rescale the image
manually to the size of the original (which is a bit tiresome when you're
scanning dozens of documents), or file it as is (which is over 2 times as big as
the original).

But I must say, I've been fiddling with gqview options and I have found an
acceptable setting for viewing these non-rescaled images with automatical
zooming.

Non-rescaled images do take a lot more disk-space, though.

Bye.


Citeren Henning Meier-Geinitz <henning at meier-geinitz.de>:

> Hi,
>
> On Sun, Oct 16, 2005 at 07:21:23PM +0200, jouthuis at dds.nl wrote:
> > I noticed that scanning at resolutions of, say, 200 dpi and more results in
> > digital images of ever bigger size, to a point that it is practically
> impossible
> > to read them on screen.
>
> Why? The actual size of the image on the screen is completely up to
> you. It doesn't depend on the resolution which you used for scanning.
> The image is scaled to whatever you want, at least with the image
> viewers I know.
>
> By the way: Which program to view images are you talking about?
>
> > I'm sorry to say this, but I think this is a rather dumb situation. At work
> I
> > have to use Windows (sadly enough), and there changing the resolution of
> scans
> > doesn't influence the size of the digital image: A4 stays A4 under all
> > circumstances.
>
> If this were true you couldn't view a complete A4 page on a "normal"
> screen as A4 is just to big. Fortunately, you can just select the zoom
> factor you want.
>
> > I wonder if there couldn't be any kind of automatic rescaling be built into
> the
> > sane-code? I can't imagine anybody being happy with things as they are now,
> with
> > respect to this.
>
> You want to down-scale the image data? As far as I know, xsane can do
> this. After the scan, select menu "Geometry"->"Scale".
>
> Bye,
>   Henning
>
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