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Picture rotation: what on earth?

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Rotated images

David Gerard

8 Dec 2011 8 Dec '11

5:06 p.m.

http://commons.wikimedia.org/wiki/File:David_Gerard,_Heathrow_Terminal_5,_2… Who thought this was a good idea to automate? And how does one get this fixed? I can't even revert to a good copy. Has a list of these been made and human-checked? - d.

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Nathan

8 Dec 8 Dec

5:27 p.m.

Just to understand - on the last thread about this, it sounded like the October 5 update forces MediaWiki to determine rotation based on EXIF data. If the EXIF data is wrong or missing, the rotation may be incorrect. As a result, a bot (RotateBot) with a gigantic backlog is slowly fixing incorrect rotations? On Thu, Dec 8, 2011 at 11:06 AM, David Gerard <dgerard(a)gmail.com> wrote:

http://commons.wikimedia.org/wiki/File:David_Gerard,_Heathrow_Terminal_5,_2… Who thought this was a good idea to automate? And how does one get this fixed? I can't even revert to a good copy. Has a list of these been made and human-checked? - d. _______________________________________________ Commons-l mailing list Commons-l(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/commons-l

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Tobias Oelgarte

6:02 p.m.

Yes you are right. It only hits images with present EXIF data that has wrong rotation values. Therefore all images uploaded with wrong EXIF data have to be tagged by a template so that the bot can through the pages and correct the EXIF tag to have the right value. I'm counting myself to the lucky ones that never uploaded images with EXIF tags, since i found them always useless. The stored data is neither sufficient for real tasks and it can easily be faked. Now the rotation is used and it causes more problems then benefits. ;-) nya~ Am 08.12.2011 17:27, schrieb Nathan:

Just to understand - on the last thread about this, it sounded like the October 5 update forces MediaWiki to determine rotation based on EXIF data. If the EXIF data is wrong or missing, the rotation may be incorrect. As a result, a bot (RotateBot) with a gigantic backlog is slowly fixing incorrect rotations? On Thu, Dec 8, 2011 at 11:06 AM, David Gerard<dgerard(a)gmail.com> wrote:

http://commons.wikimedia.org/wiki/File:David_Gerard,_Heathrow_Terminal_5,_2… Who thought this was a good idea to automate? And how does one get this fixed? I can't even revert to a good copy. Has a list of these been made and human-checked? - d. _______________________________________________ Commons-l mailing list Commons-l(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/commons-l

_______________________________________________ Commons-l mailing list Commons-l(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/commons-l

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David Gerard

6:15 p.m.

On 8 December 2011 17:02, Tobias Oelgarte <tobias.oelgarte(a)googlemail.com> wrote:

Yes you are right. It only hits images with present EXIF data that has wrong rotation values. Therefore all images uploaded with wrong EXIF data have to be tagged by a template so that the bot can through the pages and correct the EXIF tag to have the right value.

Where's said tag?

I'm counting myself to the lucky ones that never uploaded images with EXIF tags, since i found them always useless. The stored data is neither sufficient for real tasks and it can easily be faked. Now the rotation is used and it causes more problems then benefits. ;-)

I've always found it useful and interesting, if not 100% reliable. - d.

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Gnangarra

9 Dec 9 Dec

1:12 a.m.

The exif data is useful and we shold be encouraging editors to include it. I use it when looking at copyright issues some of the most prolific copyright infringers came unstuck because the variations in exif from one photo to the next, likewise images with exif data removed are an indicator of potential copyright problems. The assumption that exif data is "wrong" and needs to be fixed is the wrong asumption, the bot should only be rotating images on request. On 9 December 2011 01:15, David Gerard <dgerard(a)gmail.com> wrote:

On 8 December 2011 17:02, Tobias Oelgarte <tobias.oelgarte(a)googlemail.com> wrote:

Yes you are right. It only hits images with present EXIF data that has wrong rotation values. Therefore all images uploaded with wrong EXIF data have to be tagged by a template so that the bot can through the pages and correct the EXIF tag to have the right value.

Where's said tag?

I'm counting myself to the lucky ones that never uploaded images with EXIF tags, since i found them always useless. The stored data is neither sufficient for real tasks and it can easily be faked. Now the rotation is used and it causes more problems then benefits. ;-)

I've always found it useful and interesting, if not 100% reliable. - d. _______________________________________________ Commons-l mailing list Commons-l(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/commons-l

-- GN. Photo Gallery: http://gnangarra.redbubble.com Gn. Blogg: http://gnangarra.wordpress.com

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David Gerard
Gnangarra
Nathan
Tobias Oelgarte