CARGO SECURITY INSPECTION METHOD BASED ON THE SPIRAL SCANNING

摘要

A cargo security inspection method based on the spiral scanning comprises the following steps: spiral scanning the inspected objects using radiation beams in the first precision; judging if there exists suspicious regions in the inspected objects according to the transmission projecting data; scanning at least one cross-section in the suspicious regions using radiation beams in the second precision, wherein, the second precision is larger than the first precision; reconstructing cross-section image of at least one cross-section; judging if there exists threatened objects according to the image.