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Re: [OT] scanned files are large in size

From Siard <shiems146@kpnplanet.nl>
Newsgroups linux.debian.user
Subject Re: [OT] scanned files are large in size
Date 2019-01-03 14:10 +0100
Message-ID <xcaV4-43B-5@gated-at.bofh.it> (permalink)
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David Wright wrote:
> So I can't understand your objection to wrapping a scanned image into
> a PDF container, which makes a lot of data handling a lot easier than
> would otherwise be the case.

After scanning, an image almost always needs editing. Crop, rotate to
correct a skew horizon, remove specks, adjust light and contrast.
Gimp can open a pdf, but not in its original resolution, so there is
loss of quality.  Pdfimages can extract the image first, but its
original format (tiff? jpg? pnm?) remains unclear then, so there is a
conversion, again causing loss of quality (AFAIU).

> Other examples would be postprocessing with programs like pdftk and
> pdfjam.

Those programs cannot edit images.

> An obvious example was already mentioned: put a document into the
> ADF, press the button, obtain one file containing the entire
> document. [...] Would you really send a scanned document to a
> company/institution as a multitude of image attachments instead of
> a single PDF?

That should be the final stage of the process, not the beginning!
You can use img2pdf to put the images in a pdf container, without
affecting the image quality.

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Thread

[OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-01 18:40 +0100
  Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-01 19:50 +0100
    Re: [OT] scanned files are large in size Anders Andersson <pipatron@gmail.com> - 2019-01-01 20:00 +0100
      Re: [OT] scanned files are large in size "Thomas Schmitt" <scdbackup@gmx.net> - 2019-01-01 20:30 +0100
      Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-01 20:40 +0100
    Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-02 04:50 +0100
      Re: [OT] scanned files are large in size tomas@tuxteam.de - 2019-01-02 10:40 +0100
        Re: [OT] scanned files are large in size Joe <joe@jretrading.com> - 2019-01-02 11:10 +0100
          Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 11:30 +0100
            Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-02 12:10 +0100
            Re: [OT] scanned files are large in size Chris Ramsden <chris.ramsden@gmail.com> - 2019-01-02 12:10 +0100
              Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 12:40 +0100
            Re: [OT] scanned files are large in size mick crane <mick.crane@gmail.com> - 2019-01-02 20:20 +0100
              Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 20:30 +0100
              Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 03:50 +0100
                Re: [OT] scanned files are large in size Siard <shiems146@kpnplanet.nl> - 2019-01-03 14:10 +0100
                Re: [OT] scanned files are large in size Nicolas George <george@nsup.org> - 2019-01-03 14:20 +0100
                Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-03 15:20 +0100
                Re: [OT] scanned files are large in size Siard <shiems146@kpnplanet.nl> - 2019-01-03 16:00 +0100
                Re: [OT] scanned files are large in size Nicolas George <george@nsup.org> - 2019-01-03 17:30 +0100
                Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-03 17:30 +0100
                Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 21:30 +0100
      Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 15:50 +0100
        Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 16:00 +0100
          Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-02 16:20 +0100
            Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 16:30 +0100
              Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-02 17:20 +0100
                Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 17:40 +0100
            Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 20:10 +0100
          Re: [OT] scanned files are large in size Nicolas George <george@nsup.org> - 2019-01-02 16:20 +0100
            Re: [OT] scanned files are large in size tomas@tuxteam.de - 2019-01-02 16:20 +0100
          Re: [OT] scanned files are large in size Joe <joe@jretrading.com> - 2019-01-02 18:00 +0100
            Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 04:10 +0100
        Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 03:30 +0100
          Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-03 05:00 +0100
            Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-04 18:30 +0100
              Re: [OT] scanned files are large in size Gene Heskett <gheskett@shentel.net> - 2019-01-04 19:50 +0100
                Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-04 20:50 +0100
              Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-04 20:40 +0100
                Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-04 21:00 +0100
              Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-05 03:20 +0100
  Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-01 21:10 +0100
    Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-02 05:00 +0100
      Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 20:20 +0100
  Re: [OT] scanned files are large in size Jörg-Volker Peetz <jvpeetz@web.de> - 2019-01-02 12:40 +0100
    Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-03 05:00 +0100
      Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 06:10 +0100
      Re: [OT] scanned files are large in size Jörg-Volker Peetz <jvpeetz@web.de> - 2019-01-03 09:40 +0100
  Re: [OT] scanned files are large in size Jonathan Dowland <jmtd@debian.org> - 2019-01-03 14:50 +0100
    Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 21:50 +0100
      Re: [OT] scanned files are large in size Jonathan Dowland <jmtd@debian.org> - 2019-01-04 11:00 +0100

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