Research on precise localization of defects in high density urban drainage pipeline networks
In order to solve the problem that pipeline defects in drainage network will lead to pipeline inclination,so that water flow cannot be discharged smoothly and the load pressure of drainage system is increased,an accurate location method of pipeline defects in high-density urban drainage network is proposed.Denoising is carried out in the urban drainage pipeline image to en-hance the contrast of the image,and the equalization conditions of the pipeline network image data set samples are defined to complete the pretreatment of the drainage pipeline network data set.Then,the pipeline image of the pipe network is segmented,and the target positioning function is derived by using the characteristics of pipeline defects obtained by sampling to realize accurate posi-tioning.The results show that this method can determine the location of the defect area according to the water flow speed,and accurately define the inclination degree of the pipeline in the target de-fect area,and the location coordinates of the pipeline defects in the pipe network are consistent with the real location.
High-density citiesDrainage networkPipeline defectsImage denoisingPositio-ning function
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