..sorry, the photo ID in that URL is incorrect, should be 9728, not 9928.
Nick
From: Nick Whitelegg
Sent: 10 October 2020 21:37
To: Christian Quest ; talk@openstreetmap.org
Subject: Re: [OSM-talk] Face and license blurring (GDPR territories)
... to follow up on this, it works great on the one pano I've tested so far - I
selected this one because it had a 'not-clearly-visible' face and I wanted to
see how it would be handled. There was one adult man and two children in this
pano, they're all effectively obscured. The previous blurring tools I used
blurred all the faces but they didn't blur the child who was partly looking
away (with the face not visible)
Christian - thanks once again for this!
e.g. see https://opentrailview.org/?id=9928
Nick
From: Nick Whitelegg
Sent: 07 October 2020 17:31
To: Christian Quest ; talk@openstreetmap.org
Subject: Re: [OSM-talk] Face and license blurring (GDPR territories)
Hello Christian,
This does indeed look very nice, it's providing much more extensive blurring
than what I've tried so far.
Thanks to everyone also for the replies.
Nick
From: Christian Quest
Sent: 07 October 2020 09:25
To: talk@openstreetmap.org
Subject: Re: [OSM-talk] Face and license blurring (GDPR territories)
Le 06/10/2020 à 22:41, Nick Whitelegg a écrit :
Hi,
Apologies if this is only tangentially OSM related, but I thought I'd ask here
to try and get some expert advice.
As you may know, Mapillary has been bought by Facebook and there has been
interest in developing, or at least starting to develop/actively researching
the possibility of, some sort of open source alternative. I have been
developing OpenTrailView (opentrailview.org), however I now have a collaborator
to work on exploring an open source panos platform.
The main question I have relates to the very necessary privacy steps that must
be taken, in particular face and license plate blurring. I have experimented
with various libraries using various datasets and models, and have found that
the understand.ai Anonymizer (https://github.com/understand-ai/anonymizer),
which advertises itself as something specifically aimed at implementing the
privacy protections needed to comply with the GDPR, seems to be working the
best.
It detects faces and license plates in clear view on panoramas, which can then
be blurred.
My question, then, is what to do about people, or cars, which are further away
from the camera? In these cases, the algorithm does not necessarily detect the
face or license plate, but on the other hand in general the faces and license
plates are not clearly visible, or identifiable, in any case.
So in summary, the tool blurs clearly visible faces or license plates, but in
general does not blur those which are not clearly visible.
Apologies once again that this is only tangentially related to OSM
(OpenTrailView uses OSM to connect panos together, so not completely unrelated)
but it is very much an open geodata issue, so I thought I'd ask to get feedback.
I am in the UK and the server is in Germany (Hetzner), so GDPR would apply.
Thanks,
Nick
We have tested blurring using image segmentation which allows to blur full
parts of pictures like people and cars, not only faces and license plates.
Here is the result: https://takeitout.cquest.org/photo/cquest/blurred/
The code used is on github: https://github.com/tyndare/blur-persons/
We did some tests using TPU to speedup the process.
--
Christian Quest - OpenStreetMap France
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