Image target with human obstrution

I was looking for using image-target based AR animations for paintings. But the issue here is the paintings are huge and people generally stand in front of it and click pictures. This would cause an obstruction for the visible image to the camera. How would this affect the scanning and what can be done?

 

Hello,

Loss of tracking due to obstruction (aka occlusion) depends on a few factors:

• How much of the target is occluded? Vuforia Engine tracking can be very robust to occlusion if the target meets the following guidelines: https://library.vuforia.com/articles/Solution/Optimizing-Target-Detection-and-Tracking-Stability
• Is Extended Tracking enabled (aka Positional Device Tracker)? This can also assist with tracking, depending upon your use case: https://library.vuforia.com/articles/Training/Extended-Tracking

Lastly, the Multi Targets feature can also be used to "divide" the target into sections - think of orienting the cuboid targets so that they are flat. If a section is visible to Vuforia Engine, then it will know the relative position of the other sections and can continue the tracking experience. Here is the basic workflow:

1. Create a new device database in the Target Manager
2. Upload all images to be included in the MultiTarget as single image targets (with appropriate size values)
3. Select all images in the Target Manager, and download the device database (non-Unity Editor packaging)
4. Hand edit XML file to create the custom MultiTarget: https://library.vuforia.com/content...arget-Manager.html#how-to-modify-multi-target

In step #4, you would redefine the 3D positions for each section to the new, flat shape. This has been successfully used for art projects where the Image Target is the size of a building mural.

Thanks,
Vuforia Engine Support

 

Thanks a lot, will give it a try.