Choosing a good Guide View
For stable detection and tracking of your object, choose a Guide View position where you have a diagonal view (i.e. an angle where two or three sides of the object can be seen at the same time) that includes as much of the object as possible. Try to avoid a position that presents a fronto-parallel view onto the object (i.e., do not choose a view that is "square on" to one side of the object). In addition, try to avoid a Guide View position that makes the object appear to have many parallel lines/edges.
If your object is very large, it may be difficult to find a Guide View that is near enough to the object and still shows the entirety of the object. If this is the case, try to choose a Guide View where the object is easily distinguishable by shape. If your object has areas with large flat surfaces, try to avoid these areas, and instead find an angle of view where unique shapes in the object are more apparent.
To aid the process of selecting a good Guide View a dashed-line frame is displayed when in "Detect Position" mode. To set-up the optimal Guide View for your use-case you can switch between different frames during positioning. Landscape, portrait modes for handheld devices and a specific HoloLens mode will take into account the correct field-of-view of the device. The created Model Target dataset are device agnostic - but the optimum can be tuned well using this feature.