Automatic Extraction of Expressway Section Based on Mobile Measuring System
It is necessary to measure the cross and vertical section of highway accurately before its reconstruction,the traditional measurement method has low efficiency and poor safety.In view of the above problems,this paper studies the extraction method of highway cross section based on vehicle-mounted mobile measurement technology.The data acquisition scheme and point cloud data preprocessing method are design detailed,the multi-software combination of highway cross and vertical section acquisition technology is constructed,and the high-precision mass extraction of highway cross and vertical section based on vehicle-mounted mobile measurement system is realized.Taking the reconstruction and expansion project of G25 expressway from Lianyungang to Huai'an as an example,the analysis results show that the difference between the point cloud elevation of the cross and vertical section collected by the MMS and the measured elevation of the RTK is less than±1.77 cm,which can provide reliable data reference for the cross and vertical section of the expressway reconstruction and expansion,and greatly improve the efficiency of highway measurement.
highway surveyMMSlaser point cloudground point classificationsection survey
NETL
NSTL
万方数据
