DEM data processing

Aug 29, 2023

DEM related production can use the results of aerial triangle encryption to actively build the three-dimensional model and parameter document of the survey area, and produce the influence of forming the kernel line.

DEM data collection

When collecting DEM data, automatic counting of influence can be used to generate DEM points. Parallax curve The distance of parallax curve in editing conforms to the corresponding scientific standards, the parallax curve must be accurate, and the terrain and geomorphologic situation is instantly feedback. The collection of point, line and surface features should be very difficult to achieve active image matching, such as: the whole residential area and its large water surface area, as well as the dark shadow covering next to high-rise buildings and other conditions, the first thing is to measure the characteristic points, lines and surface of the corresponding orientation.

DEM construction

It is necessary to generate DEM to form a large category region according to the encryption point directly according to the region, and can introduce the values of feature points, lines and surfaces, so as to build a triangulation network and implement interpolation estimation.