Material calibration system and calibration method of dual-energy X ray safety inspection device

Abstract

The invention belongs to the safety inspection field and provides a material calibration system and calibration method of a dual-energy X ray safety inspection device. The system comprises a material test box, an image acquisition module, an automatic calibration module, a training calibration module and a material list generation module which are sequentially connected. The calibration method comprises the following steps: the image acquisition module acquires images of the material test box; then, the automatic calibration module analyzes the images, and extracts high-energy and low-energy data of organic glass, duralumin and low-carbon steel with different thicknesses from the images; the material list generation module automatically generates a material list; debugging personnel can check whether the material resolution capacity of the dual-energy X ray safety inspection system meets the requirements of indices; if so, the material list is output; and if not, the dual-energy X ray safety inspection system is moved to the training calibration module, and the training calibration module regulates individual points on the automatic calibration curve to vertically move the points and generates the material list. The invention realizes the automatic calibration of the material and has a training calibration function for helping the automatic calibration process, thereby greatly improving the technical indices of the existing product.

Description

technical field [0001] The invention belongs to the field of safety inspection, and in particular relates to a material calibration system and a calibration method of dual-energy X-ray safety inspection equipment. Background technique [0002] At present, the material list of dual-energy X-ray safety inspection equipment is generated by collecting object image data of different typical materials before leaving the factory, and then processed by special tools to generate the material list, and the configuration will not be changed before leaving the factory. Such a workflow and processing method has some disadvantages: [0003] 1. The process of generating the bill of materials is relatively complicated. For substances that need to be collected from different materials, after analyzing the collected data, a material table is generated through a special tool, which is time-consuming and laborious; [0004] 2. The same model uses the same set of material list. Due to the dif...

AI Technical Summary

Problems solved by technology

Due to the differences in the manufacturing process of the equipment, the use of the same set of material tables cannot make the equipment's donor material resolution reach the best state;

[0005] 3. The material table of the equipment is set by the factory and cannot be changed by the user

During the use of the equipment, the material discrimination characteristics of the equipment will change. If you continue to use the factory-set material table, the material discrimination ability of the equipment will gradually decrease.

[0006] 4. At present, there is no way to quickly set and calibrate the material table in the security inspection market, and the image quality cannot be kept stable.

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