I have had many issues around this in the past. If the images are the same
in quality/resolution then avoid duplicating what is currently on Commons.
However if your versions are, in your view, better quality then there is no
problem uploading them as they are not true duplicates. Digitally identical
duplicates should be rejected automatically at upload as the files have
matching SHA-1 checks.
For most of my batch uploads I do a check of whatever unique ID is suitable
to see if there are matches. This can be highly useful when re-running
uploads as a check of matching filenames or image page text is a lot less
processing/data volumes than downloading the image file to create SHA-1
values.
PS this feels like "advanced class" techniques. Apologies if I'm a crappy
teacher. :-)
Fae
On 1 May 2014 13:46, David Haskiya <david.haskiya(a)europeana.eu> wrote:
Hi,
On behalf of the Amsterdam Museum I'm prepping a batch upload of about 300
images of their collection of paintings. They've made the selection.
I note that a number of their paintings have already been uploaded by
individual Commonists to here
https://commons.wikimedia.org/wiki/Category:Paintings_in_the_Amsterdam_Muse…
Question: Should I upload all images in "my" batch anyway even though
this risks duplicating images? Is there a best practise for cases like this?
Cheers,
David Haskiya
*David Haskiya*
Product Development Manager
T: +31 (0)70 314 0696
M: +31 (0)64 217 2542
E: david.haskiya(a)europeana.eu
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