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Vuforia cannot track the object target

July 18, 2017 - 6:10am #1

Hi all,

I'm trying to develop an AR application using Vuforia. I have created an object target by scanning it with the Vuforia Object Scanner and even that I follow the steps that are described in the Vuforia documentation the object target is not tracked at all. I'm using the latest version of Vuforia and the latest version of unity. I have included a photo of my settings.Any help is appreciated.

Thank you in advance

Image icon unity.png703.47 KB

Vuforia cannot track the object target

July 25, 2017 - 8:20am #4

If you are right and this is problem with .od file, your app (Vuforia scanner) should have the same problems. In our case your app works really good and recognizes objects immidiatelly without any problems.

However my app, which is in fact your sample code with new database, doesn't work at all (or almost at all). I was able to detect target only 2-3 times after many tries. I was testing on both iOS (iPhone 7) and Android (Samsung Galaxy S8+). Android works a little bit better, but it is still far from acceptable.

Could you tell me what is the difference between your scanner app and unity sample code? What should I do to make it working as your scanner app?

Vuforia cannot track the object target

July 20, 2017 - 10:42am #3


There are many factors that can affect the tracking performance of a Object Target, both during the scanning process and when running an app. Most issues with Object Targets can be traced to the creation of the .od file using the Vuforia Object Scanner.

  • When creating the .od file, was the model scanned in an environment that was free of background details which may have introduced features that were not part of the model? Scanning in 'cluttered' environments can introduce false detection/tracking points.
  • When creating the .od file, was there any specular reflections on the model introduced by environmental lighting? Scanning objects that have reflective surfaces under direct lighting can introduces areas with no detection/tracking points.

In our labs, we utilize three primary strategies for creating an optimal Object Target scanning environment:

  • All background surfaces are colored at 18% gray. An easy, off-the-shelf solution is to buy bed sheets near this color and drape everything in the environment that could be seen by the scanning device's camera.
  • No direct lighting. We use light boxes and/or diffusers to eliminate direct lighting upon the object and minimize any spectral reflections.
  • Utilize a 360 turntable to re-orient the device. This is especially helpful when you've set your environment to near ideal conditions within a limited area. You can spin the model and scan in 360 degrees without having to move around it.

Additionally, the more feature rich the object being scanned is, the better Vuforia will be able to track it.

We also have a new Model Targets feature coming in a future release. You can get more information about it here: http://info.vuforia.com/modeltargets


-Vuforia Support

Vuforia cannot track the object target

July 20, 2017 - 4:51am #2

I am seeing the exact issue. Does anyone have an answer?

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