3D-Mesh MV

The 3D mesh is a possible representation variant of a 3D city model. It is a coherent combination of terrain surface with objects such as houses, trees, cars and is therefore also referred to as a digital surface model. The 3D mesh represents a snapshot of a realistic picture of a viewing space that can extend to entire cities, districts and federal states. For the 3D mesh, photogrammetric aerial data must be available which are recorded in aerial and laser scanning flights. The data required for a 3D mesh are point clouds and oblique aerial images. Adjacent points are connected in the triangulatation method/3D-Meshing to form three- and four-corners, which are called polygons or faces. Depending on the level of detail, the size of the individual elements of the polygons differs. The result is the polygon net, which is defined as the sum of the composition of all three- and four-corners produced. The polygon net of the three- and quadruple corners provides the basis for texturing the color information from high-resolution images. The result is the meshing of a closed, textured polygon net (grid net).