Meeting minutes
<yonet> /invite zakim #immersive-web
<yonet> Thank you Atsushi, nice to see you!
<atsushi> ;)
marker-tracking#5 Marker / image tracking spec status [klausw]
Klaus: Marker/image tracker
https://
… wants to know what people think and how to proceed
… what should be done if there is no image/marker tracking on API
Klaus: API designed to be more privacy perserving. Does not like the ability to dected & recognize arbitrary QR codes
… Up to user agent to determine which types of images can be tracked
… concerned that these limitations may disadvantage the API
Leonard: Are you aware that khronos has just started an
… embedded camera focus group to see where things stand
… unsure how that'll impact things but seems relevant
klausw: not aware but good to keep an eye on. unsure how it would impact
Leonard: idk but it's an open group
Kalaus: ... If not this API, then what?
<cperey> hello
<cperey> would someone please share the webex link?
Nick: Large number of good quality QR code detectors. Does this impact any choices made for the API?
<cperey> thankyou!
<Zakim> bajones, you wanted to clarify issues with they types of images a browser may "support"
Nick: Looking to the future, you don't want to anticipate all future needs. Looking for a cross-platform feed that each application can deal with on their own.
Brandon: Different developers have different algorithms that may have make physical objects good or bad tracking sources.
… repeating objects (e.g., brick building with windows) don't necessarily track real well, except Microsoft devices
… that are tuned for that.
<Dylan_Fox_XR_Access> https://
Brandon: Not too concerned about object-specific tracking
Klaus: AR Code refuses to track QR codes or bar charts.
… Certain headsets with extra cameras, those devices may provide extra tracking capabilities; especially items
… generally out of view
Rik: Does not expose access to B&W cameras used for tracking.
Dylan: Saw Navilens uses QR codes with color that have improved detection and readability. Used in Barcellona for
… bus stops and other public places. Seems to have uses with people with visual impairments.
Aysegul: Implement in AR Core?
Dylan: Use in Hololens
Klaus: Suspects that there may be issues with scale and multiple objects:
[Dylan note: https://
<Dylan_Fox_XR_Access> Better link - https://
Klaus: Might better work out with video feed (raw camera) and browser-based detector algorithm.
yonet: Does Hololens support this at the device level?
Lachlan: I don't think so
Klaus: Not sure how the public reacts to privacy concerns with app access to raw camera data.
… Prefers privacy protections, but may depend on public acceptance & use
Nick: Sees a lot of people using 8th Wall permissions for camera access
… Thinks camera permissions easier to understand that Immersive processing
yonet: What is confusing about Immersive Web?
Nick: Not sure, needs to re-read it. Thinks it is something about tracking your position in space over time
… there are other experiences (FB) so they can judge value
Jeff_Gilbert: _thoughts on how to develop a better persmission system, including requests, reasons, descriptions, etc._
yonet: No further discussion, but no resolution. Should move to GitHub?
Klaus: Agrees
Nick: Willing to help with testing and expirmentation
Klaus: Thanks, will contact.
webxr#1183 Add clarification on user interaction and permission for installed apps [cabanier]
Moving on to agenda #2
https://
Rik: Thinks this has been resolved after conversation with Manish & Brandon
… Don't think any changes are needed
<yonet> awk
No questions/comments. --- Short break ----
<Manishearth> https://
Manish: Introduce issue - https://
… Request session with features/permissions, then closes. A new session would have those granted permissions.
… This exists because permissions might be needed prior to session start OR add permissions during the session
WebXR #1178 Use session's requested features instead of session device's enabled features to check if a reference space is supported
<Manishearth> https://
Manish: Issue has some analysis and potential solutions (see above)
… Plan to address this in a future meeting.
yonet: Are asking for in-session UI, how does it look and how does the user interact?
Manish: Not directly part of this issue. The process is UA dependent and defined.
No further discussions. Meeting adjurned until 2 weeks (April 6)