Methods and Systems for Performing On-The-Fly Automatic Calibration Adjustments of X-Ray Inspection Systems

An X-ray inspection system comprising:

• a radiation source;
• an array of detectors;
• a computing device in data communication with the radiation source and the array of detectors, wherein the computing device has one or more physical processors programmed with a plurality of program instructions that, when executed by the one or more physical processors, cause the computing device to:
• generate, using the X-ray inspection system, a first plurality of calibration data, wherein the first plurality of calibration data are stored in a memory associated with the computing device;
• generate, using the X-ray inspection system, X-ray scan images of a cargo container;
• segment the X-ray scan images into a plurality of regions of interest, wherein each of the plurality of regions of interest contain a single type of a material associated with a known atomic number or a single type of a material associated with a known HS code;
• determine, using the first plurality of calibration data, first data indicative of a first effective atomic number of the single type of the material associated with the known atomic number or a second effective atomic number of the single type of the material associated with the known HS code for each of the plurality of regions of interest;
• compare the first data with second data indicative of a known effective atomic number corresponding to the material associated with the known atomic number or a known effective atomic number corresponding to the material associated with the known HS code;
• adjust the first plurality of calibration data to generate a second plurality of calibration data if the first and second data differ significantly;
• and
• replace the first plurality of calibration data by the second plurality of calibration data in the memory.