Pixel data are sent to an algorithm that groups pixels into aggregates called regions. These regions are processed into objects. This process uses many heuristic clues from the image such as edges, shapes and material analysis to recognize and define objects accurately in densely packed airport baggage. Algorithms analyze the defined objects individually for effective atomic number, density and total mass. Germann adds that terrorists can package explosives in various formats, whether it be bulk, treated sheets or other types of camouflage.
Users can task the system to locate most materials.
Vivid systems come in a variety of configurations. Two freestanding models screen baggage carried along a short conveyor belt. Developers designed the H-1 model for screening bags that passengers will eventually check before they leave the luggage at the counter. The H-2 is a slightly larger station similar to those used at security checkpoints already familiar to travelers. This model is integrated in-line with the airport's automated baggage handling system and is capable of inspecting as many as 1,500 bags per hour for explosive materials.