Method and apparatus for assessing the threat status of luggage

摘要

A method and apparatus for assessing a threat status of a piece of luggage. The method comprises the steps of scanning the piece of luggage with penetrating radiation to generate image data and processing the image data with a computing device to identify one or more objects represented by the image data. The method also includes further processing the image data to compensate the image data for interaction between the object and the penetrating radiation to produce compensated image data and then determine the threat status of the piece of luggage.

主权项

1. A method for assessing a threat status of a piece of luggage, said method comprising:
a) receiving X-ray image data derived by scanning the piece of luggage with a scanning device using X-rays, the X-ray image data conveying information about an attenuation of X-rays resulting from X-rays travelling through the piece of luggage; b) processing the X-ray image data with a computing device programmed with software for:
i) detecting an object in the piece of luggage;ii) deriving an X-ray signature associated with the detected object, the derived X-ray signature associated with the detected object conveying an amount of X-ray attenuation attributed to the detected object, wherein the X-ray signature associated with the detected object is derived at least in part by processing a virtual model of the detected object to simulate interactions between the detected object and X-rays;iii) deriving compensated X-ray image data at least in part by reducing in the X-ray image data effects of object induced X-ray attenuation resulting from X-rays travelling through the detected object based at least in part on the derived X-ray signature associated with the detected object;iv) determining the threat status of the piece of luggage at least in part based on the compensated X-ray image data.