Marker / image tracking spec status

[klausw]

This feature has been a bit quiet recently. As far as I know the current status is that there's a prototype implementation in Chrome behind the "WebXR incubations" flag along with the draft explainer. There was interest from Microsoft (@thetuvix if I remember correctly) to consider expanding it to include QR code support.

Can we schedule some time at one of the immersive-web conf calls to talk about the status and next steps?

/agenda to discuss current status

[Maksims]

QR image tracking and the ability to manage images while the session is running - would be a great move forward for an API.
I've integrated current specs into PlayCanvas Engine, and from current tests, this is really promising and the community is excited.

[reconlabs-sergio]

Hi @Maksims,

we also integrated the image-tracking capabilities on our web-xr app. However, since a recent chrome update, image-tracking stopped working. Specifically, frame.getPose(result.imageSpace, refSpace); returns always zero position and rotation. I'm curious to know if this is happening on your side, too. I have cannot specifically pinpoint which version is breaking, but I downgraded chrome on a test smartphone to 89.0.4389.105 and I confirm its working. I tried with 91.0.4472.120 and 91.0.4472.77 and its not working.

[Maksims]

This is Specs repo, and for implementation bugs, please use https://bugs.chromium.org/p/chromium/issues/list (for Chrome).

[Adolar13]

Hey,

any update on the spec? We did some pretty cool tests with PlayCanvas and WebXR Image Tracking and it looks super promising. We can't wait to use this in production!

[klausw]

@Adolar13 - there's now a proposed spec at https://immersive-web.github.io/marker-tracking/ . Note that this includes some minor renaming (i.e. "trackability" instead of "trackingScore") which don't currently match the experimental Chrome implementation, the goal is to get that straightened out once there's consensus.

/agenda to discuss proposed spec

[klausw]

@sergiobdrl as noted by Maksims implementation issues should be tracked in the Chromium issue tracker. See https://bugs.chromium.org/p/chromium/issues/detail?id=1224598 for the pose issue. that should be fixed as of Chrome 93.0.4564.0.

[TomDDH]

hey, I am new to this, is there a live demo I can learn from?. thanks.

[klausw]

Sure, try https://arimg.glitch.me/

…

On Tue, Jul 20, 2021, 22:07 TomDadongHu ***@***.***> wrote: hey, I am new to this, is there a live demo I can learn from?. thanks. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <immersive-web/marker-tracking#5 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAKT5X2XUZJHKN3FD2DIFDLTYZIZTANCNFSM4ZT55MDQ> .

[klausw]

I'm removing from the agenda for now since I won't be able to make it to the next group call, sorry about the confusion.

[TomDDH]

Sure, try https://arimg.glitch.me/
…
On Tue, Jul 20, 2021, 22:07 TomDadongHu @.***> wrote: hey, I am new to this, is there a live demo I can learn from?. thanks. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5 (comment)>, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAKT5X2XUZJHKN3FD2DIFDLTYZIZTANCNFSM4ZT55MDQ .

Thanks very much, look very robust.

[klausw]

/agenda to discuss draft image tracking specification