Hello @AvionVrImmersion,

Not a problem - had to rattle my head a bit to recall the thread.

Here's some additional tips from our investigation of similar issues:

• There is an inherent limitation in how accurate HoloLens can track a Model target on HoloLens, which, based on our observations, can be in the order of +/- half centimeter (roughly a quarter of an inch)
• It is VERY important to keep the Model and rendering complexity to as low as possible, so to guarantee a constant/stable 60 FPS rendering, which seems to be crucial to minimize wobbling/shaking/jitter
• Some expedients to optimize this are:
  • Keep model triangle count well below 100K triangles (prefearrably under 50K triangles)
  • Set the light settings to "Mixed" or "Baked" (do not use "Realtime")
  • Use simple shaders (e.g. "Mobile/VertexLit" for example)

Thanks,

Vuforia Engine Support

@medabit

I am sorry I didn't subscribe to this thread so I didn't see your reply until today.

I just got through trying your suggestion and I am afraid I didn't notice too much difference.

Just so it is know I used Unity 2018.1.6f1 + Vuforia 7.1.35

I Enabled "Depth Buffer Sharing Enable tried both 16bit and 24bit.

At this point I agree with the thread you linked that it is something to do with the HoloLens or Unity.  In the past couple of weeks I tried the MRTK poster calibration with a QR code, and while it was able to line up perfectly it also had the drifting problem.

 

Hello @AvionVrImmersion,

We've been able to replicate your observation with Model Targets on HoloLens and are currently investigating further. Unclear if this is a regression in Vuforia or Unity.

If you're still willing to try and move forward (and make the boss happy), please try the following:

• Vuforia 7.1 + Unity2018.1 (my records shows that 2018.1.6f1 and greater have SDK 7.1.X  - just do not upgrade.
  • NOTE: There is an issue with the Unity Asset store where it may download the wrong version of the HoloLens sample. Please be aware of possible compatibility issues
• Enable "Depth Buffer Sharing Enabled" setting
  • Edit -> ProjectSettings -> Player -> XR Settings -> Windows Mixed Reality
  • From: https://github.com/Microsoft/MixedRealityToolkit-Unity/issues/1699

Let me know how it goes.

Thanks,

Vuforia Engine Support

Hello,

@CrackerHackerMasterChecker - I just attempted with 2018.2.11 upgraded to 7.5.26 (our most recent release). Using the Vuforia Digital Eyewear Unity sample, I created a ModelTarget prefab in the 2-Eyewear scene, and then configured the Device Config = HoloLens. I did not see an error.

@AvionVrImmersion - Let me take a look and post back on my observations.

Thanks,

Vuforia Engine Support

I am using Vuforia 7.5 and Unity 2018 .2.11f1.

Hello,

Which version of Vuforia are you using? Model Targets have been supported on HoloLens for the last couple of Vuforia releases, per my recollection.

Thanks,

Vuforia Engine Support

Hello, I have the same issue. In Vuforio Configuration, when setting Device Type to "Digital Eyewear", Unity warns me "Model Targets are not supported by Digital Eyewear". Does this include Hololens?