Application of Multi-technology Fusion in River Regulation Earthwork Measurement
In view of the deficiency of the traditional method in the earthwork measurement of river regulation,the paper adopts the method of combining the airborne LiDAR with the oblique photogrammetry to collect the point cloud and the image of the survey area respectively,the sketchy DEM is obtained by calculating and filtering the point cloud data,the real scene 3D model,DOM and feature lines are obtained by aerial triangulation solution and 3D reconstruction.The sketchy DEM,feature lines and measured data of water area are combined to generate high-accuracy fine DEM,the accurate earthwork volume of river regulation can be obtained by calculat-ing the cut&fill earthwork volume of DEM before and after project.The traditional grid measurement method was used to evaluate the operation efficiency and verify the accuracy of the results.The operation efficiency of the technology method was about six times that of the traditional method,and all the indicators of the results met the requirements of the specification.It is proved by engineering prac-tices that this method succeeded in high accuracy and high efficiency,and had extensive application prospect in similar projects.
river regulationearthworkairborne LiDARoblique photogrammetryDEM
万方数据
维普
