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Camera shaking

November 24, 2016 - 7:32am #1

Hi guys,

I'm new in Vuforia and I'm working on a project for my company and I'm testing Unity 5 with Vuforia to decide the technology to use.

I have an issue with image target recognition. I can see that my 3d models are shaking.  

When I select the AR Camera it is moving and rotating.. just a little but  it is noticeable

I have tried:

- An Image Target of width 11cm and height 11cm. 

- An Image Target of width 4cm and height 2 cm.

- A VuMark with width of 9cm and height 5cm.

- A VuMark of width 4cm and height 2 cm.

 

With all this targets I have the same issue

 

Anyone have the same issue?

 

Thanks in advance

Camera shaking

December 13, 2016 - 1:39am #5

I am not sure how superior the spacial tracking system is for a 2x2x2 object. Can we get more details on this? I mean exactly what is happening? Does Vuforia provide a single pixel location (when the object is found), or a full transform? I am trying to understand what is needed based on the object tracking section here: https://developer.microsoft.com/en-US/windows/holographic/locatable_camera

 

Would it be ok to add you (medabit) on Linkedin?

Camera shaking

December 12, 2016 - 12:45pm #4

Hello,

With Extended Tracking enabled on HoloLens, you should not see "jumpy" augmentations after the target is detected. After detection and the initial pose is returned by the Vuforia SDK, we will hand tracking off the HoloLens to use its superior spacial tracking system.

Thanks.

Camera shaking

December 8, 2016 - 1:45am #3

I was wondering about if there is a best practices for objects (not targets). Currently there is no star rating for .od files, and I couldn't find some kind of general tips on what constitutes a good object model (not image target).

Also, is there a way to smooth/filter the camera coordinates? In my case it is extremely jumpy, and I was hoping of doing something like proposed here: https://developer.vuforia.com/forum/unity-extension-technical-discussion/filter-camera-position-and-rotation-avoid-jitter, but I can't get it to work when setting the world center mode Camera (I am using it with a Hololens). 

Camera shaking

November 30, 2016 - 10:53am #2

Hello,

The 3d model 'shakiness' you're observing is due to jitter in the pose returned by Vuforia. The pose is updated approx. 30 times/sec., and each time Vuforia re-calculates the pose based upon the camera image captured.

A certain amount of jitter will always exist, but there are some factors that can make it more pronounced:

  1. Insufficient environmental lighting
  2. Target with a low star rating, meaning that it could have an insufficient number of keypoints, or the distribution of those keypoints are uneven
  3. Specular reflections on the target
  4. Distance of the device camera from the target

I would suggest reviewing these factors to assess whether they are affecting the experience. Additionally, I would suggest using our extended tracking feature to see if this helps.

Thanks

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