The Design And Implementation Of Subway Technology Quality Inspection System Based On Image Processing

In recent years,subway industry has entered a stage of rapid development.At the same time,the commissioning of large-scale new lines has brought enormous challenges to production and operation.In the quality inspection system of subway technology,people are dominant of quality inspection in tradition,but with the input of large-scale production pipeline,the manual detection method is far from meeting the demand of industrial production.Based on the above background,this paper applies image processing technology to the quality inspection process of subway technology,and combines Web development technology to complete the design and implementation of metro processing quality inspection system based on image processing.According to the content,this paper divides the system into image processing algorithm part and software part to design and implement.In this paper,six items in the quality inspection process are selected for image algorithm development.Among them,for the detection of the gap of the electrical cabinet door panel,a n algorithm based on region growth has been designed.The experiment proves that the algorithm can accurately extract the target gap.For the identification of dynamic connector identifier,based on SURF algorithm,this paper proposes a feature point matching algorithm based on DBSCAN,and the experiment proves that the algorithm has a good matching effect.For the identification of the camera and LCD,this paper designs a three-level filtering algorithm based on connected area according to the scene.The experiment verifies the effectiveness of this algorithm.For the part of software,this paper divides it into six modules according to the function: user login module,route management module,image information management module,user management module,notification announcement module and app module.The back-end system adopts the Web development technology of MVC architecture.The front-end page is designed and implemented by HTML5,CSS,JavaScript and Bootstrap framework.At the same time,with the login authentication technology,Ajax asynchronous data interaction technology,jqGrid visualization chart technology and WebService technology,the development of all functional modules has been completed.