Patent ID: 8027429

Claim:
A real-time mark method for a substance identification system which identifies a substance in an article to be inspected based on a set of classification parameters, the method comprising the steps of: simultaneously emitting a first main beam of rays and a first auxiliary beam of rays having a first energy, and simultaneously emitting a second main beam of rays and a second auxiliary beam of rays having a second energy; causing the first and second main beams of rays transmitting through the article to be inspected; causing the first and second auxiliary beams of rays transmitting through at least one real-time mark material block; collecting values of the first and second main beams of rays that have transmitted through the article to be inspected as dual-energy data; collecting values of the first and second auxiliary beams of rays that have transmitted through the real-time mark material block as adjustment parameters; adjusting the set of classification parameters based on the adjustment parameters; and identifying the substance according to the dual-energy data based on adjusted classification parameters.