Composite geological map automated cartographic generalization method

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.