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Issue lost ground/positional tracking after multitarget detection

By vridge on Wed, 09/12/2018 - 22:30
Using Unity 2018.2 with Vuforia 7.2, ARCore 1.4 (fusion) enabled and Stereo eyeware. Initially ground detection and tracking works perfectly, then we detect and track a multi-target cuboid and that works fine as well,position and rotation. But, when we stop using the multi target element and go back to the ground surface, the tracking fails and drifts. Here is a video to better expain the issue: https://youtu.be/u4qA3BuvK48 Maybe there is an anchor that is created automatically when the multitarget object is detected and being tracked, and after using it, that affects the ground/device tracking? Or something like that.. Any workarounds? Thanks!

BTW same issue without using ARCore, of course the ground surface tracking is not good, but you can notice how crazy it behaves after detecting the multi-target cuboid.
Here is the video, same issue, but no arcore in this case: https://youtu.be/2oddaYL984Q

Hello,

Apologies for the delayed response. I will escalate internally with a bug report.

Thanks,

Vuforia Engine Support

Hello,

I did a mock of your scenario using our Core Samples. Using this test, I *was not* able to reproduce the issue demonstrated in your video.

My setup has the following differences: