Abstract:

On the basis of 8intersections model, constraint conditions can be added to topological relations between a region with holes and a simple region so as to represent the topological relations. According to the research of topological relations between a region with holes and a simple region, we established the system of topological relation reasoning, and got the composition table of 17 topological relations. We calculated all kinds of irrigation chances and drew up the effective irrigation mechanism via the topological relations sheet. Reasoning the topological relations between the target region and the rain cloud area, we are able to optimize the use of water resource.

Key words: topological relation, simple region, region with a hole, irrigation