DOM has the advantages of high accuracy, rich information, intuitive and realistic, strong realism, etc.
DEM (Digital Elevation Model) describes elevation values across the map, excluding vegetation and man-made structures. It describes “bare earth” elevation. The result can be applied in survey, hydrology (calculate flow accumulation and flow direction), geology, construction, utilities, etc.
Digital Surface Model (DSM) refers to a ground elevation model that includes the height of surface buildings, bridges, and trees.
Digital line drawing (DLG) is a vector dataset of geographic information of terrain features expressed in the form of points, lines, areas or map-specific graphic symbols.
Building Information Modeling is a new tool for architecture, engineering and civil engineering.
"Single unitization" refers to each object that you want to manage separately. It is a separate entity that can be selected, can have additional attributes, can be queried, etc.
Production of 3D model data using semi-automatic or fully automatic modeling of tilt photography
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