Method and system of material identification using binocular steroscopic and multi-energy transmission images

A binocular stereoscopic and multi-energy scanning radiographic imaging system comprising a radiation source, a left detector array, a right detector array, a left image acquisition system, a right image acquisition system and a computer processing system, wherein:

• said radiation source is an X-ray generator for generating X-rays of different energy levels;
• said left detector array receives the X-rays of different energy levels and converts them into electric signals to be inputted to said left image acquisition system;
• said right detector array receives the X-rays of different energy levels and converts them into electric signals to be inputted to said right image acquisition system;
• said left image acquisition system receives the electric signals sent by said left detector array and acquires left image data from the electric signals;
• said right image acquisition system receives the electric signals sent by said right detector array and acquires right image data from the electric signals;
• and
• said computer processing system receives said left and right image data from the left and right image acquisition systems respectively, processes said left and right image data at different energy levels to identify the material of an object at a specific depth plane wherein:
• said computer processing system segments said left and right image data at different energy levels and matches the results of said segmentation so as to create depth planes of transmission images of the different energy levels in the depth direction, reconstructs grey values of the depth planes to obtain a depth plane of each depth plane for each different energy level, merges the depth planes for different energy levels at the same position to obtain a depth plane for each depth plane and energy of a predetermined group of energy levels, and identifies the material of each matched object in each depth plane.