Research On 3D Scene Modeling And Application Of Municipal Road Earthwork Based On UAV

Since the process of urbanization is accelerating,the demand for municipal infrastructure increases as well,which efficiency of construction project is highly required.The earthwork plays an important role in municipal road construction,not only its efficiency but also quality of the construction has a significant impact on the overall road quality.Recently,because of the extensive management,the construction progress were lagged behind while resource were not fully used.Hence,how to improve the ways of construction management needs to be solved for now.For this reason,this paper introduces a method of managing the municipal road earthwork construction site based on UAV.By using UAV as the flight platform carring data collecting equipment,the earthwork construction sites could be modeled as threedimensional form and be controlled in a real time.Firstly,combining with the characteristics of the municipal road construction site,this paper puts forward the scene requirements of the road earth work for the three-dimensional model,and then respectively establishes the same municipal road model based on the UAV equipped with lidar scanning technology and image modeling technology.After building the road model in a different way,the evaluation index to analyze the modeling results is established.The results show that the accuracy of the 3D modeling method based on UAV aerial photography meets the scene requirements,this method also has a fast speed of model generation and its applicability is higher than the method that based on laser lidar scanning.Last but not the least,the effectiveness of 3D modeling method based on UAV aerial photography is verified in the background of a municipal road project in Wuhan.The conclusion shows that this method can be well used in building the municipal road model which overcome the shortcomings of traditional 3D modeling technology,and provide reliable technical support for the digital real-time control of earthwork construction progress in the construction site.Through this way,the real-time information of construction sites could be better provided while the efficiency of the construction process could be improved,which has large significant of realizing the construction site fine control.