Three-dimensional holographic imaging security check radar image foreign matter detection method

Abstract

The invention relates to the technical field of holographic imaging security check, in particular to a three-dimensional holographic imaging security check radar, and particularly provides a three-dimensional holographic imaging security check radar image foreign matter detection method. The foreign matter detection method comprises the following steps: acquiring target detection data of a three-dimensional radar image; inputting the three-dimensional radar image target detection data into a trained convergent anchor-point-free neural network model, and obtaining a three-dimensional radar image foreign matter detection result output by the anchor-point-free neural network model. According to the method, the number of prediction boxes extracted by the neural network model can be greatly reduced, the calculation complexity of the model is reduced, the finally predicted detection box has good flexibility, and the recognition effect of an object with large scale change can be improved; meanwhile, through a multi-level three-dimensional radar image feature extraction mode, the neural network model can obtain more sufficient semantic information, and detection and recognition of objectsin an image scene are facilitated.

Description

Technical field: [0001] The invention relates to the technical field of holographic imaging security inspection, in particular to a three-dimensional holographic imaging security inspection radar, and specifically provides a method for detecting foreign matter in a three-dimensional holographic imaging security inspection radar image. Background technique: [0002] With the development of society and economy, airports, railway stations, subways, bus stations and other public transportation hubs have ushered in more and more passenger flows and logistics. The security inspection level of these areas must eliminate potential safety hazards to ensure public safety and meet High detection efficiency with fast pass. Traditional foreign object detection methods mainly use security inspection technologies such as metal detection and X-ray imaging, which have gradually failed to meet the needs of security inspection. Developed countries in Europe and the United States have graduall...

AI Technical Summary

Problems solved by technology

[0004] Three-dimensional holographic imaging security radar is a newly developed security detection technology. At present, in terms of foreign object detection in three-dimensional holographic imaging security radar images at home and abroad, it is mainly based on conventional optical image target detection methods; due to radar images affected by coherent speckle noise and observation Due to the influence of viewing angle, the applicability of conventional training, verification and testing methods for object detection and recognition in optical images is limited to a certain extent

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