On February 17, 2015 , the USPTO issued U.S. Patent Number 8958526 to RAPISCAN SYSTEMS, INC., which was successfully prosecuted by Novel IP.
The '526 patent is directed towards a specification which discloses an X-ray scanning system for scanning an object. The processing system has processors adapted to receive X-ray tomographic image data and extract parameters from the data, where the parameters include constant grey level, texture or statistics. The processing system also includes processors for executing decision trees, where the processors receive the parameters and construct information using the parameters and processors for conducting a database search, where the database search maps the information to a threat level and allocates the object being scanned to a safety category.
Independent Claim 1 describes " 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".