Patent ID: 7873182
Filing Date: 2011-01-18
Classification: G06K,H04N

Abstract:
1. A method for detecting concealed objects on an individual using an optical contrast based imaging system, the method comprising: illuminating an imaging zone with millimeter wave energy; providing a plurality of millimeter wave cameras focused on the imaging zone that have the ability to detect millimeter wave frequencies reflected from the imaging zone; providing a plurality of video cameras focused on the imaging zone so that each video camera has a corresponding millimeter wave camera of the plurality of millimeter wave cameras focused on a substantially identical angle and perspective of the imaging zone; scanning the imaging zone simultaneously with the plurality of millimeter wave cameras and the plurality of video cameras; electrically communicating between the plurality of video cameras, millimeter wave cameras and a central processing unit; receiving input signals from the plurality of millimeter wave cameras to generate millimeter wave images; receiving input signals from the plurality of video cameras to generate video images; synchronizing the millimeter wave images with the video images to a substantially identical time base using the central processing unit; generating real-time composite images of the millimeter wave images and video images using the central processing unit; detecting a concealed object on an individual using the central processing unit by identifying differences in the millimeter wave energy reflected by the individual and the concealed object; and displaying the composite images on a video monitor that is in electrical communication with the central processing unit so that the concealed object is visually shown on the composite images of the individual.