[Tagging] Surveillance camera angle

[Graeme Fitzpatrick]

I take it you've been looking at this proposal which never actually went
through?:
https://wiki.openstreetmap.org/wiki/Talk:Proposed_features/Extended_tags_for_Key:Surveillance#Field_of_view.2C_height.2Fdirection.2Fangle_-_tagging_camera_and_sensor_alignment_and_mobility..._how.3F

Been doing some looking, & according to TI, there are ~107000 uses of
surveillance:type=camera, but beyond that proposal, there doesn't appear to
be any definition anywhere of  cameras, mounts, directions, angles or
anything else to do with them!

Looking at the proposal, direction 0-360 is pretty straight-forward to show
the compass direction the camera is pointing, from 0 (due North), all the
way back around to 360 (also due North).

Angle 0-180 has me a bit confused though? I'm guessing the OP was working
on the angle that the camera is looking vertically, from vertically
straight down to straight up, but 0-180 doesn't really make sense?

Elevation angles like that would usually start with 0 as the camera facing
directly, horizontally forward, increasing from 0 degrees elevation through
to 90 as it elevates to pointing vertically upwards, while 0 - -90 is the
same thing in reverse as it depresses till pointing vertically down.

There have been a few questions raised on the proposal over the years, but
the OP apparently hasn't been on deck for ~11 years, so I don't think
they'll be working on it anymore!

Sounds like a good project for somebody to restart in the New Year! :-)

Thanks

Graeme


On Wed, 29 Dec 2021 at 01:08, Cascafico Giovanni <cascafico at gmail.com>
wrote:

> Hello List,
>
> I need some clarification about the meaning of "camera:angle" tag,
> somewhere defined in range 0-180.
>
> Is value the elevation angle? (90=horizontal)
> Is value horizontal field of view?
>
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20211229/379f6694/attachment.htm>