Fig. 11.

Recognizing containment in dynamic scenes. (A) Containment is detected by a switch in boundary ownership from the inserted object to the container. The boundary ownership score indicates the owner of the common border between a container and non-container (simple) objects. During a simple occlusion event (left), one of the objects maintains ownership throughout the event. However, during a containment event (right), the common border switches ownership between the simple object and the container, signaling a paradoxical occlusion. (B) The model computes an ‘inversion score’ for boundary ownership, and uses it to detect containment. The boundary ownership inversion score measures the confidence level of a boundary ownership switch during a dynamic event. Containment (blue triangles) is well separated from occlusion (red discs) by the detection threshold (dotted line). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)