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Positional device tracker works but not the trackable marker

October 15, 2020 - 7:26am #1

Hello,

 

I have made an AR App (on Unity, for an Android phone) with an image target. The image target I chose is a QR code in order to have a lot of features.

My problem is that the AR detection works sometimes right away, and sometimes I have to relaunch the app or move away from the target several times in order for the target to be tracked.

I am using the positional device tracker and extended tracking (on Unity 2019.4).

What I don't understand is that the positional device tracker status always detects the image target right away (status = "tracked - normal"), but the trackable marker does not systematically ("no pose-unknown") and that is why I don't have anything rendering at times.

Would you have any idea here why the marker is sometimes not detected?

Thank you in advance

 

 

Positional device tracker works but not the trackable marker

November 4, 2020 - 1:28am #2

Hi,

QR code altough rich in features is not recommended to be used as an Image Targets. I would recommend to change the image and it should be more robost.

Here is an article about Best Practices in regards to Image Tragets: https://library.vuforia.com/features/images/image-targets/best-practices-for-designing-and-developing-image-based-targets.html

https://library.vuforia.com/content/vuforia-library/en/features/images/image-targets/best-practices-for-designing-and-developing-image-based-targets/image-targets-optimization-techniques.html

Thank you.

Vuforia Engine Support

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