2023 , Volume 28, № 6, p.57-67

The article discusses the experience gained while processing data on the relief of water bodies, such as the Irkutsk reservoir and the Angara River, for establishing a relief model that combines data from various sources, such as topographic and pilot maps, the results of depth measurements with an echo sounder, and the contours of coastal lines obtained from remote sensing data along with aerial photography. The use of algorithms developed for processing such data, which are based on the construction of triangulations, is considered. In addition to the actual algorithm for constructing the Delaunay triangulation with restrictions on vector data of various natures, algorithms have been implemented: removing triangulation artifacts built using relief isolines and morphing maps to coordinate the underwater part of the relief with the surface, replacing a triangulation fragment. The resulting relief model contains all the information about the relief of the studied area and allows it to be used for further hydrological calculations and analysis of the studied areas of reservoirs.