Identification About X-ray Security Image Screening Of Prohibited Items

Due to the frequent occurrence of major accidents,it has aroused our interest to the safety of public places.During the recently years,subway stations,airports and other public places have been using X-ray security machine for security checks,and it plays an irreplaceable role at protecting national security.Now identify the image just using the naked eye X-ray security machine,but the security of the baggage of various things overlap each other,especially in the flow of people prone to missed,false,etc.,so for this The situation will need to find a way to obtain more convenient identification of prohibited objects to improve the efficiency and accuracy of security identification.In this paper,according to the principle of X-ray inspection machine imaging,and the effects and disadvantages of various parts of the security equipment are analyzed.According to the characteristics of X-ray security image,we choose the color difference in different color space and different image segmentation methods.Space on the basis of the threshold selection and regional growth of these two methods of combining the combination of means,the same material objects are completely separated out for the further identification of the following to provide a guarantee.This paper focuses on two kinds of classical feature extraction and recognition methods,such as Fourier descriptor and Zernike moments,and deeply analyzes and analyzes the basic principles of them.The advantages and disadvantages of the two algorithms are summarized and the algorithm is improved.Finally,the two algorithms are combined,and the improved Fourier descriptor method is used to identify the security image and then based on the Zernike moment method.In the feature extraction need to use the known contraband template,through the establishment of the Prohibited Template template to facilitate the extraction of the characteristics of the contraband,and eventually the prohibited items in the security image identification mark out.From the preprocessing of the image,the hierarchical progressive approach,from simple matching to exact matching,it improves the efficiency and accuracy of contraband identification.