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Solution again model flickering

April 8, 2019 - 1:11am #1

Hi, i'm trying to find a solution to solve a flickering problem on my model when a use ImageTarget and Vuforia

Do you know what is the best way against this ( screens in "Attach File" )

I changed clipping planes on ARCamera but the distance between Camera and target is too large

and remodeling all model is not the best way for me ( the model come from Revit -> Export FBX)

 

Thx for your help 

AttachmentSize
Image icon Capture.PNG1.17 MB
Image icon Captured.PNG1.11 MB
Image icon Capture21.PNG325.91 KB

Solution again model flickering

April 8, 2019 - 10:54am #2

Hello,

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

  • Always print the image that was uploaded to the portal to the exact same aspect ratio. Any stretching or altering of the image may cause tracking pose jitter. Some printers default to "stretch to fit", which can change the aspect ratio.
  • Check the size values you are using when uploading Targets to the Vuforia Target Manager. Note there is specific language used in the dialogue box that says Vuforia uses meters as the default unit scale. Incorrect target sizes could affect either our detection/tracking algorithm
  • Image Targets must be flat when in the camera's field of view
  • Not enough lighting upon, and/or spectral reflections occluding the Image Target
  • The entire target image is not in the camera's field of view. As Image Targets extract feature points from the target in real time (on a frame-by-frame basis), the more feature points the better the quality of the tracking experience. In most cases, this can be improved by enabling the Device Tracker (aka Extended Tracking): Unity Editor->Window->Vuforia Configuration->Device Tracker->Track Device Pose (box checked).

Thanks,

Vuforia Engine Support

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