Patent ID: 8212669
Filing Date: 2012-07-03
Classification: G08B

Abstract:
1. A method of passively and unobtrusively monitoring a passageway where detection of people or objects moving in a disallowed direction through the passageway is critical and a rapid response to a detected movement necessary comprising: stereoscopically viewing people and objects moving in any direction through the passageway using a stereoscopic sensor with an integrated processor and generating successive individual frames of three-dimensional imagery of the people and objects as they move therethrough; processing the individual frames of imagery to distinguish people and objects from any other people or objects simultaneously moving through the passageway regardless of the directions of movement of such other people and objects; and, providing an alarm indication if the direction of movement of a person or object is in a disallowed direction whereby people or objects moving the disallowed direction are passively and unobtrusively detected and their movement reported.