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What is the maximum number of image targets that can be realistically simultaneously tacked?

March 3, 2019 - 2:16pm #1

What is the maximum number of image targets that can be realistically simultaneously tacked? At least, particularly, on an iPhone? I see very little information in the way of this. I understand that Vuforia has lifted its simultaneous tracking limit, but what is that number in practice?

 

I've tried tracking multiple cards at once, but have been, so far, unable to track more than 5 or 6. Would a VuMark perform better at tracking multiple images? Say, 11?

What is the maximum number of image targets that can be realistically simultaneously tacked?

March 6, 2019 - 2:06pm #2

Hello,

There are numerous factors that can affect Vuforia Engine SDK's ability to track multiple, simultaneous 2D targets:

  1. The device camera's field of view, which is determined by the camera's focal length and sensor size.
  2. Environmental lighting, including the presence of spectral reflections on the targets.
  3. The device camera's resolution setting (which depends upon the device). The higher the capture resolution, the better Vuforia's ability to extract feature points from the 2D target.
  4. The quality of the 2D targets:
  5. The device's processing power. Each additional target that is tracked simultaneously will increase the processing load on the CPU, which can usually be observed with a decreasing camera capture frame rate. At some point the processor may become saturated enough that it can no longer detect and track additional targets.

Thanks,

Vuforia Engine Support

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