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Android Image Target found without an actual Target

By Charriu84 on Tue, 09/11/2018 - 09:49

I'm running into a strange problem on Android with my Unity 2017.2 app. During runtime I have implemented the option to activate and deactivate the AR part of my app. When I deactivate the AR part and activate it afterwards Vuforia sometimes finds a Trackable even though my tablet is lying flat on the ground and should not find anything.

This is how I activate Vuforia after it is initialized:

 

  1. Activate the gameobject with the VuforiaBehaviour on it
  2. TrackerManager.Instance.GetTracker<ObjectTracker>().Start();

 

And this is how I deactivate Vuforia:

 

  1. TrackerManager.Instance.GetTracker<ObjectTracker>().Stop();
  2. Deactivate the gameobject with the VuforiaBehaviour on it