How to get Vuforia and MRTK MultiScene System works? - unity3d

I'm working on AR Project with the HoloLens 2. I need to recognize a QRcode to build my Buttons in the real world at the right positions. So what I'm doing I used MRTK 2.2 and I applied the MRTK configuration. I work with the Multi Scene System so that I have MainScene Manager where all children are not destroyable.
The camera is under the MainSceneManger and I attached to it Vuforia Behavior and DefaultIntialization error Handler and the Image target is under other Scene. The camera could not detect the Image which is in the Fact my QRcode, but when I put the ImageTarget under the MainSceneManager where the Main camera is it works fine. How could I get this work when the Image Target and Main camera are not under the Same Scene.
Ps: In the attached picture I Loaded the Haupseite Scene intentionally so that you can see where the ImageTarget placed.

Related

Vuforia and MRTK for Hololens 1 : ImageTarget not working

I'm creating a simple app with a menu and multiple scenes. The structure is the following :
Loading (empty scene, MRTK Scene Manger, load the main scene, contains the camera)
Main (4 buttons used to change scene, no camera)
Cube (a scene with a cube, no camera)
Scenario1 (a scene with Vuforia and ImageTarget, contains Vuforia Behaviour script)
...
The problems
I have one main issue :
When I launch the application in Unity, Vuforia use my webcam as a camera and the ImageTarget are detected really quickly. However when I deploy on the Hololens using USB method (since Vuforia isn't supported using Hololens Remoting Player), it's really hard to detect the ImageTarget. The ImageTarget got 4/5 stars when uploaded on Vuforia and these are my settings :
In Vuforia database I also set the height of the target to 0.21m since I printed it on a A4 sheet
There you can see the scene system I use :
For the camera, the loading scene contains the Main Camera, then in Scenario1 I have an empty object containing Vuforia Behaviour Script.
Question
Why is Vuforia having so much troubles to detect the ImageTarget when running on the Hololens ?
Please refer to Vuforia Engine Release Notes | VuforiaLibrary, support for HoloLens 1 was deprecated in Vuforia Engine v10.3.2.

Unity 3D Shader Doesn't appear on VR mode

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Thank you for your answers,
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