| 主权项 |
1. A X-ray scanning system for scanning an object having a processing system, wherein said processing system comprises:
a multi-focus X-ray source arranged to generate X-rays from more than two X-ray source positions located around a scanning region, each of said X-ray source positions comprising grid wires, wherein said multi-focus X-ray source does not move during a scan; a control unit to control an electrical potential applied to said grid wires of each of said X-ray source positions to cause an emission of X-rays from each of said X-ray source positions; a first set of detectors arranged to detect X-rays transmitted through the scanning region; a second set of detectors arranged to detect X-rays scattered within the scanning region; processors adapted to receive X-ray tomographic image data, identify separate regions in the image, and extract a plurality of parameters from said data, wherein said parameters include at least one of constant grey level or texture and wherein identifying separate regions comprises calculating a mean intensity of a set of pixels within said image, determining a standard deviation of intensities of said set of pixels, determining an intensity of a pixel proximate to said set of pixels, and adding said pixel to the set of pixels to form a region if the intensity of said pixel is within said standard deviation; processors for executing a plurality of decision trees, wherein said processors for executing a plurality of decision trees receive said parameters and construct information using said parameters; and processors for conducting a database search, wherein said database search maps the information to a level of threat and allocates the object being scanned to a safety category. |
