Extended Tracking
Formal
The concept that a target pose information will be available even when the Target is no longer in the field of view of the camera or cannot directly be tracked for other reasons.
Practical
This allows you to launch the AR experience with an Image Target in the camera view persist the experience even when you’re not tracking the image. This is particularly useful for visualizing large or complex objects that may be larger than the Image Target. Two examples are:-Game or game-like experiences with a large amount of dynamic content that requires the user to point the device away from the target as the user follows the content-Visualizations of large objects like furniture, appliances, large home furnishings and even architectural models at the right scale and perspective.
