CODEWITHSUNDEEP
unity-game-enginevuforiahololens
John Jepson
John Jepson

Reputation: 1

Unity/Vuforia - VuMark & Image Marker positions reported incorrectly on HoloLens 2 even when they are tracked in view

I'm having a problem on HoloLens where on rescanning a marker Vuforia sometimes reports the position relative to the camera rather than the world origin.

  1. Using delayed initialisation, we initialise vuforia and then scan a VuMark, the position is reported correctly.

  2. After disabling and then re-enabling the vuforia behaviour, and then scanning the marker again, occasionally (maybe 1 in 4 attempts) the marker position is briefly reported correctly but then immediately jumps to a position that seems to be relative to the camera rather than the world origin.

I've tried manually resetting the device pose behaviour and disabling/enabling the marker behaviour and using both TRACKED and EXTENDED TRACKED but the problem persists.

Logs from HoloLens 2 device

Unity Version: 2022.3.15f1 Vuforia Version: 10.13.3

Repro Steps

  1. Initialise Vuforia.
  2. Scan VuMark
  3. Marker is found in correct position
  4. VuforiaApplication.Instance.GetVuforiaBehaviour().enabled = false
  5. Wait for a period
  6. VuforiaApplication.Instance.GetVuforiaBehaviour().enabled = true
  7. Scan VuMark

Expected: Marker is found in the same position as step 3.

Actual: Marker is found but the position is incorrect (sometimes), and seems to be a relative offset from the camera

Upvotes: 0

Views: 49

Answers (0)

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