FIELD: generation of digital topographic maps. SUBSTANCE: points, linear and two-dimensional objects are separated according to their content. Contours of linear and two-dimensional objects are divided into constituents which are limited by points of intersection with other contours of bordering objects. Constituents are numbered, direction of their selection is chosen, constituents are later used as pieces for contour detection. In addition a table for generation of object contours is generated according to numbering and directions for selection of constituents. Resulted information is stored in special structure of computer memory which is used later for software generation of contours of topographical objects according to generated table. EFFECT: increased functional capabilities. 13 dwg
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