- From: Francois Daoust <fd@w3.org>
- Date: Wed, 7 Feb 2018 22:21:23 +0100
- To: <public-sdwig@w3.org>
Hi all,
The minutes of today's plenary call are available at:
https://www.w3.org/2018/02/07-sdw-minutes.html
... and copied as raw text below.
The group discussed:
- Status updates of subgroups
- The Video Geotagging for Electronic Maps idea raised on the mailing-list (Rob presented the idea)
- The F2F meeting's logistic and agenda
Please register to the F2F meeting as soon as possible through the following form (please fill out the form even if you cannot come):
https://www.w3.org/2002/09/wbs/102593/sdwig-f2F-2018-q1/
Thanks,
Francois.
--
Spatial Data on the Web IG - Plenary Call
07 February 2018
[2]Agenda [3]IRC log
[2] https://lists.w3.org/Archives/Public/public-sdwig/2018Feb/0003.html
[3] https://www.w3.org/2018/02/07-sdw-irc
Attendees
Present
Bill Roberts, Chris Little, Francois Daoust, Linda van
den Brink, Rob Smith, Michael Gordon
Regrets
Andrea Perego, Jeremy Tandy, Scott Simmons
Chair
Linda
Scribe
tidoust
Contents
* [4]Meeting Minutes
1. [5]Approving past minutes
2. [6]Status update of subgroups (Stats, BP)
3. [7]Video Geotagging Protocol For Electronic Maps
4. [8]F2F meeting
Meeting Minutes
Approving past minutes
<brinkwoman> [9]https://lists.w3.org/Archives/Public/
public-sdwig/2018Jan/0002.html
[9] https://lists.w3.org/Archives/Public/public-sdwig/2018Jan/0002.html
<brinkwoman> +1
<MichaelGordon> +1
<tidoust> +1
<ChrisLittle> +0 minutes, not present
<billroberts> +1
Minutes approved
Status update of subgroups (Stats, BP)
Linda: On top of updates, Will you have a telco before the next
F2F?
MichaelGordon: In the last meeting, we started to look at
activities we could have to encourage adoption of the best
practices.
… I took on the task of restructuring the pages on GitHub into
domain specific areas where we might want to have an impact.
… [Michael going through a long tunnel without audio
connection]
billroberts: Switching to stats while Michael sorts out his
audio issues, we had a call 2 weeks ago where we discussed our
use case document, and reviewed the document Andrea had
prepared
… Some discussion about other groups that are doing things on
statistics data
… The special angle that we're doing is on the Web part, but we
need to pay attention to what others are doing as well.
… Quite a bit of work, but we need to make sure that we have an
exhaustive enough list.
… There won't be another call before the F2F, but we'd like to
spend some time at the F2F about that.
MichaelGordon: [switched phone]. Back to the SDW Best
Practices. Publishing area domain might be interesting. To be
discussed how people can take on some of these domains. How we
could work with Denise at OGC to craft some messaging with a
domain flavour.
… We'd like some consistent theme but with some specifics.
… Good piece of work to tackle at the F2F.
… There is not a plan for another telecon before the F2F.
Linda: Thanks. No news on Moving Objects. I saw some activity
related to SSN on GitHub
Francois: Some errata were found by an external reviewer, which
led Maxime to find additional errata. To be discussed and
approved by the group.
ChrisLittle: Some activity from Simon. Need to review it and
make sure I get what he proposes.
Video Geotagging Protocol For Electronic Maps
See [10]Video Geotagging For Electronic Maps slides
[10] https://lists.w3.org/Archives/Public/public-sdwig/2018Feb/att-0030/WebVMTIntroShort180207.pdf
Rob_Smith: From Away Team. I've been developing an idea for
video geotagging. Starts from work with Ordnance Survey last
year where they wanted to track position in a show.
… The thing I discovered is that there does not appear to exist
any standard for that currently.
… Different vendors take different approaches, including
embedding geolocation at the frame or metadata level.
… It's not very accessible. Also expensive to get an add-on
(only for high-end equipment) to have a GPS with your camera.
… Now, there is an emerging market in "mobile video devices"
… How can that need be addressed and what are the issues?
… There are many ways to record geolocation. How to associate
it with video is more problematic.
… WebVTT support provides a hint to a possible solution. It's
text-based, easy to author, accessible.
… The file can be distributed with the video.
… You could present geolocation data on Google Maps for
instance. Camera track on a map.
… Further value can be added by framing the map. You could
annotate it to draw the user's attention to a particular
feature.
… I cornered it down to zooming, panning, and a few additional
features
… This provides cross-platform support instantaneously, and you
don't need expensive equipment. A smartphone is enough for
capture, and a web browser display is enough for rendering
… Looking at use cases:
… Coastguard/Mountain Rescue: you've got a drone searching for
someone in a difficult to reach area. The remote operator can
see the video, see the location on a map, and can zoom out to
identify the right approach route to the person.
… Area Survey: Drone with a detector surveying of a given area.
The operator can check its work. You can fill in the area. You
have improved quality insurance. No need to go to the office to
analyze the footage.
… Sports Trails: user with a helmet camera, traveling however
they want. They can concentrate on their activity.
… Speed and distance calculation can be tricky, but with this,
it would already be built-in.
… TV Coverage: the most complex one. Cameras on drones and
competitors. Example of a car rally. You have multiple media
devices. The director can see all of them on a map, and it can
redeploy them live. It becomes an asset management system.
… This concludes my presentation.
ChrisLittle: Thank for acknowledging SMIL/SVG on the
mailing-list. Have you thought about contacting Christine Perey
who is involved on Augmented Reality scenarios.
… It may be an area to interface to, even if it does not change
your idea.
… The other connection is inside OGC is the Drone working group
that just started. Their first deliverable is mission planning.
… It may be your use case would be useful for them.
… You may get some volunteers to help you.
Linda: Of course, in this group, we have a subgroup that will
be looking at moving objects, so I see somewhat of an overlap
there. They have not been active yet, though.
Rob_Smith: Just to give you a little bit of information as to
where I am, I worked on a tech demo that proves things work in
the browser.
… I've worked on spatial in the past, also development for EA
and Nokia.
Linda: The text format that you are using to store the data, is
that something like GPX?
Rob_Smith: It's a hybrid. The tech demo uses the WebVTT block
structure, with a little bit of formatting at the start. It has
cue times.
… I copied that structure. I replaced the text that they used
with a new markup language.
… Thanks to Chris for the SMIL reference, I re-shaped the
animation syntax to be more SMIL-like.
… I'm looking to keeping it as lightweight as possible.
ChrisLittle: You may want to steal more ideas from an OGC
standard to embed positions in text messages, which is of
course not very long.
Rob_Smith: Sounds like a good suggestion. Can you send me a
reference?
ChrisLittle: Will do.
Francois: Media people tend to like to embed tracks within
media containers. To keep in mind. Also, what usually helps in
standardization groups is to sketch some sort of draft spec to
drive discussions. Are you planning to do that?
Rob_Smith: Yes, I started to draft something for my own sanity.
<ChrisLittle> GeoSMS OGC standard for Rob Smith [11]http://
www.opengeospatial.org/standards/opengeosms
[11] http://www.opengeospatial.org/standards/opengeosms
F2F meeting
Linda: A few things. First, [12]please register or fill the
form to say that you are not coming. It's important for us to
have this information to finalize the meeting details.
[12] https://www.w3.org/2002/09/wbs/102593/sdwig-f2F-2018-q1/
Linda: The [13]logistics of the meetings should be simple
enough.
… I can take questions now if things are unclear.
[13] https://w3c.github.io/sdw/meetings/f2f-1.html
ChrisLittle: When do we think that the agenda will finish on
Tuesday? Want to know whether I can schedule a return trip on
Tuesday.
Linda: A bit more than 30mn away from Schipol airport
… It all depends on people, I live there :)
ChrisLittle: 4-5pm would work for me to get back home before
midnight.
Linda: No problem on my side to stop at 4-5pm
[Ice skating logistics are being discussed]
Rough idea would be to start on Monday at 10:00am and end on
Tuesday at 4-5pm.
Linda: Note I'll be there at 8 on Monday, feel free to come
before.
Linda: We'll organize a dinner on Monday night.
<ChrisLittle> +1 to dinner
<ChrisLittle> +1 to beer
Linda: Agenda-wise, I want to give subgroups enough time. Any
preference for slots?
billroberts: We have several Australian who are not coming to
the meeting but are willing to join on WebEx for the
discussion.
… A Tuesday morning session on stats would be good from an
Australian perspective.
… From 9:00 to 10:00am on Tuesday should be not too anti-social
for them.
… We can make use of more time after that.
Linda: OK. Michael, do you have any preference?
MichaelGordon: 10:00am on a Monday would be a good slot, but a
slot on Monday afternoon would be good, actually.
Linda: I'll check with folks involved in moving objects to see
if they need time.
… Should we talk about SSN?
Francois: If people are around, yes, in particular because
Simon is proposing updates that go beyond errata, so future of
the spec needs to be discussed.
Linda: OK, if they are around.
Linda: Quick overviews of activities that are on-going at OGC
and W3C would be good. Should not be long.
… We could also discuss CityJSON, which could be a good
candidate topic for joint OGC/W3C work. I can get the creator
to join if needed.
billroberts: What can our group do to assist with that process?
… I don't quite understand how it works.
ChrisLittle: One of the functions of the IG would be to triage
which activities would need to be done at OGC, W3C, IETF, etc.
and see where this all goes
Linda: That's something we could discuss at the F2F. How we do
this triage process.
Francois: agree with Chris. Also +1 on discussing CityJSON.
Francois: I would also suggest a session to discuss other
topics, either those that have already been raised such as
MapML, or the presentation Rob made, as well as other topics
that could come to mind to assess reactions in the room. I
might come up with a few use cases that do not touch on topics
already raised for instance.
<MichaelGordon> +1
<Rob_Smith> +1
Linda: OK, will add the meta discussion on triage process, and
a session on topics to triage to the agenda.
Rob_Smith: Happy to prepare a draft spec by the F2F if that can
help with the triage operation.
Linda: Can you attend the meeting or join WebEx?
Rob_Smith: Either is possible. Let's discuss offline.
Linda: Thanks. See you all at the F2F.
Received on Wednesday, 7 February 2018 21:24:21 UTC