Burglar alarm system with stereo camera monitoring

摘要

An anti-intrusion system (10, 150, 250, 300, 350) comprising: a first camera (14, 154, 254, 304, 354) configured to generate first images of a monitored area; a second camera (16, 156, 256, 256); 306, 356) configured to generate second images of the monitored area; a detection device (18, 158, 258, 208, 358) configured to compare the first images with a background image of the monitored area, the detection device (18 , 158, 258, 208, 358) marks differences between the first images and the background image as a potential intruder; anda tracking device (22, 168, 276, 330) configured to evaluate each of the first images relative to each of the second images to determine three-dimensional characteristics pertinent to the potential intruder, the tracking device comprising a threshold comparator (28) configured to allow a user of the anti-intrusion system to set up at least one three-dimensional threshold zone or at least one three-dimensional null zone in the monitored area, and wherein the tracking device activates an annunciator (30) in response to movement into or to the threshold zone, and the tracking device activates the annunciator in FIG Reaction to differences between the first images and the background image in the zero zone not activated.