It's a pretty cool format. :)
I have got the beginnings of a PHP rewrite of your python script
(but it's not at all
What is the best way to decrease the size of the jpgs before creating
the djvu? Just scale them to ~1000 px or something? How do you handle
that? (Sorry, I've read your code, but am confused...) I'm using
imagemagick to do it, so any transformation it can do is easy to
On Fri, 27 Jan 2017, at 03:24 PM, Alex Brollo wrote:
Yes, presently IA jp2.zip are the source files for all
and for OCR. All the derived ones are omologous - t.i. *relative*
coordinates of any element inside images are identical, even if image
size varies. This means that mapping of elements (images or text) can
be exported into any derived file.
Just an example: when an user crops an image from a
djvu file by the
excellent CropTool by Danmichaelo, coordinated of the cropping could
be used to crop high-resolution jp2 or jpg image, or to get
coordinates of any piece of text mapped by OCR.
2017-01-27 0:53 GMT+01:00 Sam Wilson
> Good to know, thanks!
> So, we just stick with jp2.zip
> And I love the IA magic :)
> On Fri, 27 Jan 2017, at 07:40 AM, Andrea Zanni
>> AFAIK, IA always produce the jp2 files by
>> I suggest GLAMs to upload zipped folders of
>>> so IA can do his magic and produce a book viewer and a PDF as well
>>> as the jp2.
>>> On Fri, Jan 27, 2017 at 12:10 AM, Sam Wilson <sam(a)samwilson.id.au>
>>> On Thu, 26 Jan 2017, at 06:35 PM, Andrea
>>>> The problem for me is that librarians
and other people who are
>>>> genuinely interested in Wikisource and IA
>>>> don't understand why
>>>> * they upload a good scan on IA
>>>> * see a good book on IA, via the
>>>> * get an horrible djvu on Wikisource.
>>>> This is the issue we should try to
solve, otherwise we will lose a
>>>> potential important ally, content and new userbase.
>>>> On a related note: most (all?) IA-scanned books have e.g. *_jp2.zip
>>>> files containing all the original scan images, but is there any
>>>> standard for user-uploaded books? Like your librarians above, I
>>>> assume they're uploading individual jpg/png files? Do these get
>>>> combined into a single zip? I'm thinking that they don't, and
>>>> ia-upload needs to provide the option of using any of the following
>>>> * .djvu
>>>> * _jp2.zip (there's also _jpg.zip and _raw_jp2.zip, but I guess we
>>>> don't need to use them?)
>>>> * *.jpg + *.jp2 + *.png (i.e. use all images in the item, apart
>>>> from _cover_image.jpg)
>>>> * .pdf
>>> Sound complete? Or are there other ways?
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