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Jerky image tracking at first

By petitbas on Tue, 06/02/2020 - 15:10

I'm getting jerky image tracking on an iPhone 11. The first few seconds the image is recognized and tracked sporadically then after a few seconds things return to normal and tracking becomes solid again. Using Unity 2019.3.13f1 and Vuforia 9.1.7. Here's an example:

https://www.dropbox.com/s/dngf7v49ww5kcsy/2020-06-01%2017.54.35.mp4?dl=0

This only happens on mobile, not in the editor. Has anyone else seen this behavior?

Hi,

In the beginning at 0:03 it seems that tracking is lost but than it recovers fast.

Do you have extended tracking/Device tracker activated?

Thank you.

Vuforia Engine Support

I tried Tracked, Extended

I tried Tracked, Extended Tracked and Extended Tracked Limited. Same jerkiness. I tried downgrading to Vuforia 9.0.12 in package manager with the same results. Finally, downgrading back to Vuforia 8.6.10 solves the issue and tracking is solid from the start.

Hi,

I've tested with the core sample app and was *not* able to reproduce the issue.

SDK 9.1.7

Pose jitter exists for all 2D planar targets. The magnitude of the jitter (hardly noticeable to very noticeable) can be impacted by a few factors:

I'm having the same behavior.

I'm having the same behavior. with Vuforia 9.3.3 and ios 12.x, 13.x with any of my own projects (new or already working on android).

But the sample project on asset store works just fine.

I'll tray downgrading to 8.x

Hi,

Could you please confirm that the Render Over Native UI is selected? under Resolution and Presentation.

Thank you.

Vuforia Engine Support

Hi! Yes that option is

Hi! Yes that option is enabled.

I found other user with same problem. FPS are ok, so is not a problem of performance.

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