Vivid Technologies, Inc.

A review with 6 referencesThe vivid rapid explosives detection system is a true dual energy x-ray machine employing precision x-ray data acquisition in combination with unique algorithms and massive computation capability.Data from the system's 960 detectors is digitally stored and processed by powerful supermicro-computers organized as an expandable array of parallel processors.The algorithms operate on the dual energy attenuation image data to recognize and define objects in the milieu of the baggage contents.Each object is then systematically examined for a match to a specific effective at. number, d., and mass threshold.Material properties are determined by comparing the relative attenuations of the 75 and 150 kVp beams and electronically separating the object from its local background.Other heuristic algorithms search for specific configurations and provide addnl. information.The machine automatically detects explosive materials and identifies bomb components in luggage with high specificity and throughput.X-ray dose is comparable to that of current airport x-ray machines.The machine is also configured to find heroin, cocaine, and US currency by selecting appropriate settings on-site.Since Jan., 1992, production units have been operationally deployed at U.S. and European airports for improved screening of checked baggage.