Improving X-Ray Imaging for the Transportation Security Administration Challenge While many who travel in airports are rushing to catch a flight, we take for granted the technology that keeps us safe -- the baggage scanner. An airport security screener’s ability to find weapons or explosives hidden in luggage can be affected by the visual complexity of the X-ray image. Visual complexity is difficult to measure, and the best metric of complexity had been a subjective, five-point “clutter” scale with little validity or reliability. The Transportation Security Administration (TSA) asked Battelle to create an objective, quantitative measure of visual complexity so that its effects on screening performance could be studied more rigorously. Solution Our scientific evidence suggests that the numb

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