Plane detection estimates flat surfaces in a physical environment, such as a floor, tabletop or wall.
A useful approximation of a surface
An AR system may infer a flat region from camera features, depth information or other sensor data. As the device observes more of the room, the estimated boundary and position can change. A detected plane is not necessarily an exact outline of a table, and it does not automatically contain the full shape of every object resting on it.
Detection is only part of placement
A hit test can find a candidate position on an estimated surface. An anchor can help maintain a chosen pose as tracking updates. These are separate jobs. Detecting a floor does not itself mean an object has been placed, that the floor will hide virtual content, or that the placement will survive a later visit.
Choosing an exhibition approach
A free-standing virtual sculpture may benefit from surface placement in a compatible AR viewer. An augmentation that must stay attached to a painting may instead use image tracking. When planning a Painta artwork, choose the experience that fits the work and verify the supported viewing mode on the intended device. The diagram explains a general AR placement process, rather than promising automatic room detection in every viewer.