Technologies of massive spatial data acquisition from air, udcompared to a classical terrain measurement, enables an udacquisition of large amounts of data in shorter time and udwith comparable quality. Unmanned aerial vehicle (UAV) udphotogrammetry is increasingly used in the area of the udearthwork volumes determination of landfill or excavation of udthe building material. Dense multi-image matching obtains udhigh-density point cloud. The input data for the earthwork udvolumes calculations is a filtered point cloud. The earthwork udvolume calculations are calculated with the method of udsurface comparisons of two term measurements, created by uda triangulated irregular network (TIN) or grid network. udThe impacts of different methods for surface interpolation udand grid cell size on the earthwork volume calculation are udanalysed. Reference quantity is the volume, calculated from udTIN surfaces. Good interpolation methods and appropriate udgrid cell sizes are determined with the comparison of volumes udfrom grid and TIN surfaces. The difference between volumes udshould not exceed 5%
展开▼
