2017-01-25 8:40 GMT+01:00 Sam Wilson <[email protected]>:

>
> On Wed, 25 Jan 2017, at 03:27 PM, Andrea Zanni wrote:
>
> On Wed, Jan 25, 2017 at 1:45 AM, Sam Wilson <[email protected]> wrote:
>
>
> Yann, do you mean you're getting good quality DjVu generated from the PDF?
> Or from the original scan Jpegs?
>
> AFAIU, Yann is using ABBYY finereader to generate a djvu and then uploads
> it directly to Commons. So outside of our ia-upload tool.
>
> Ah, okay. So if it could be done in the tool, that'd be nicer.
>
> Yes, it is a question of settings.

> Aubrey: when you say directly use the PDF, you mean for the tool to copy
> that across to Commons and not create a DjVu?
>
>
> Yes.
> If the Djvu quality is much lower than the PDF there's no reason to use
> the djvu over the pdf :-(
>
> DjVu has to advantages over PDF: better compression, so small files for
the same content, and better management of the text layer.
Over if the compression is too high, the quality is not good. It is a
question of a compromise between quality and size.

Yann


> Are we saying that we *never* want to use the IA PDF? That if there's a
> DjVu we use it, and if there isn't we generate our own DjVu from the JP2
> and djvu.xml files? Or should the tool user make this call and we give them
> a drop-down list of "PDF only", "Generate DjVu from PDF", and "Generate
> DjVu from original scans" with a note about the last of these being higher
> quality but slower?
>
> I think I'm in favour of just generating a high-quality DjVu and making it
> simpler for the end user. But we want to be flexible too. jayantanth
> mentioned <https://github.com/Tpt/ia-upload/issues/15> that he'd like to
> be able to just upload the PDF for example.
>
>
>
>
> I can have a look at adding that feature perhaps? (Anyone else working on
> this?)
>
>
> Please ;-)
>
>
> I can try!  :-)
>
> Aubrey
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