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"Track Device Pose" unstable in some device

October 23, 2018 - 10:16pm #1

My project has just one Vumark. I switch on "Track Device Pose", set "Tracking mode" as "Positional", and set "Fusion Mode" as "Optimize for Image Targets and VuMarks". I guess this is the way to enable the good old extending tracking.



Now, if i test it in editor or in my iPad Air 2, the tracking is good. it keep tracking even the marker is covered or out of view. But if i tested it with my iPad Pro or iPhone 8, the position will quickly drift after the marker is covered or out of view. Is there any thing i can solve this problem?



i am using unity 2018.2.1f1, the vuforia version is 7.5.20, Xcode 10.0

"Track Device Pose" unstable in some device

October 26, 2018 - 10:39am #2

Hello,

I suggest you try FUSION_PROVIDER_VUFORIA_VISION_ONLY. The FUSION_OPTIMIZE_IMAGE_TARGETS_AND_VUMARKS setting will default to ARKit for Extended Tracking, so perhaps you are observing performance limitations with that. Using the former will eliminate VIO-based device tracking (ARKit, ARCore, Vuforia VIO) and use our legacy SLAM tech.

Thanks,

Vuforia Engine Support

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