Composite geological map automated cartographic generalization method

Abstract

The invention discloses a composite geological map automated cartographic generalization method. The method specifically comprises the following steps: forming a class A constraint for determining a map surface geological factor class, a factor group and spatial and semantic relationship thereof at a source geological map structure analysis stage according to characteristics such as use, a type, a proportional scale, a cartographic region and geological data of the geological map automated cartographic generalization and an actual working flow; forming multiple intelligent bodies by following the class A and class B constraints at a source geological map cartographic generalization stage, and performing generalization operation of the geological map by adopting different operations and operators for different levels of geological map objects; performing standardization processing on the geological map data obtained by the cartographic generalization stage according to a class C constraint at a target geological map format standardization stage to obtain a geological map which conforms to a drawing standard and has good vision expression. According to the method, the problem of consideration of a geometric shape and semantic information in the geological map automated cartographic generalization is effectively solved, and the speed, efficiency and accuracy of the geological map cartographic generalization are effectively improved.

Description

Technical field [0001] The invention relates to the technical field of geological information, in particular to a method for automatic synthesis of composite geological map mapping. Background technique [0002] The automatic comprehensive technology of geological map mapping is the core technology for the compilation and drawing of small and medium-scale geological maps, and is a research hotspot and frontier subject in geological research and various geological survey fields. At present, the automatic synthesis technology of general map cartography is relatively mature, but the automatic synthesis technology of geological map cartography is still under exploration. [0003] The mapping process from large-scale geological maps, to medium-scale geological maps, and then to small-scale geological maps is a process of information extraction and synthesis, referred to as the comprehensive process of geological mapping. Traditional geological mapping and mapping are integrated, us...

AI Technical Summary

Problems solved by technology

However, the technology that can realize the automatic synthesis of geological maps in a digital environment, shorten the production cycle of geological maps of different scales associated with maps, and realize the integration and rapid update of geological map databases of multiple scales has not yet been seen. Many exploratory The results are not yet of practical value

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