SimSA5_person_exits_scene_through_structure

Description:  A person exiting the scene (going out of the field of view) through a physical structure (e.g., doorway, arch, gateway, subway entrance/exit).  This distinguishes exiting through a structure from entering the FOV via (a) an incidental edge-of-image or (b) incidental occlusion, which both arise from the choice of camera viewpoint rather than inherent structures of the scenarios.  Entering is always determined relative to the field of view.  The only track required for this activity is a person track.

Start:  The event begins 1 s before the door moves or if there is no door, the event begins 1 s before half of the person’s body is through the structure.

End:  The event ends 1 s after the person has passed through the structure or when the individual is no longer visible.

Special Case 1: In the event of exiting through a stairwell (e.g., subway entrance in GDB scenes), the threshold for exiting is the top step of the staircase. Therefore, the activity begins 1 s before the individual completely crosses the top step and ends when the person is no longer visible.  If the individual remains at the top stair for an extended period, then the activity begins 1 s before the person moves through/off the threshold.

Special Case 2: The arch entryway in ALB G328 and G331 constitutes a structure.
