Fig. 12.

Recognizing containment in static scenes. In a static scene, paradoxical occlusion is detected by the model directly (applying a simple threshold) from the simultaneous detection of opposing occlusion relations along the common borders between a container and a non-container (simple) object, when some border parts are owned by one object, while other parts are owned by the other object. The opposing occlusion relations are measured by the ratio between the length (number of pixels) owned by one of the objects and the total number of pixels (along the common borders).