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How do I keep an object perfectly level with the floor when using image detection

We've been experimenting with Vuforia for a while and we mostly have it working. However, our biggest issue at the moment is once a image has been detected, the horizontal rotation is often wrong. We are doing room scale AR experiences so even if the rotation is off just a little, it has a really big effect. 

What we would like to do is have the object always be parallel to the floor (figured out by the devices sensors) but still be detected, scaled, positioned etc by the image detection. 

I have attached an image of the effect that we're seeing to try to help. 

 

Appreciate Any help / advice 

 

Hello,

Any chance you can provide a video of the experience you're trying to create? I'd like to see the size of the target compared to the scale of the room.

Thanks,

Vuforia Engine Support

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