Video survielance system with 3d CCD image sensor and infra red light source

摘要

The apparatus has a sensor (39) that detects three-dimensional image information and processing equipment that evaluates the image information to recognize a deviation between images and to trigger a situation-adapted reaction. The sensor has a light source in a region of an elevator door, which is partly monitored in a detection range illuminated by the source. The equipment categorizes door state based on deviation. An Independent claim is also included for a method of monitoring a state of an elevator door.