A Hierarchical Measuring Method for Scene Similarity of Complicated Planar Entities with Holes

Abstract

The invention discloses a layered measurement method of similarities of a complex surface-shaped entity scene with holes. The complex surface-shaped entity scene with the holes is divided into a complex scene layer, a micro-scene layer and a simple entity layer; the relation of the adjacent layers is regarded as a set relation, the similarities of all the layers are mutually embedded, entity matching is conducted from top to bottom, similarity calculation is conducted from being locally to being globally, and then a similarity measurement result of the complex surface-shaped entity scene withthe holes is obtained. The layered measurement method is applicable to studying the more complex surface-shaped entity scene with the holes.

Description

technical field [0001] The invention relates to the field of geographic information science, in particular to a method for hierarchically measuring the similarity of complex surface-like entity scenes with holes. Background technique [0002] In geographic information systems, complex surface-like solid scenes with holes are universal and complex. The similarity judgment and retrieval of complex surface-like solid scenes with holes is undoubtedly a hot and difficult issue in the research of spatial database and geographic information science. In spatial database systems, retrieval conditions, and geographic information systems, there are generally complex surface-shaped entity scenes with holes, such as: multiple lake scenes with islands, building clusters with holes, etc. (a collection of any number of surface-shaped entities with holes). Because the number of holes contained in the surface entities is random, the number of surface entities contained in the two complex sce...

AI Technical Summary

Problems solved by technology

Because the number of holes contained in the surface entities is random, the number of surface entities contained in the two complex scenes is also very likely to be different, which makes the matching relationship between the surface entities and between holes in the two complex scenes very complicated. The existing spatial scene similarity measurement model is limited by the complex matching relationship and is no longer applicable

Not only that, the current research on spatial similarity at home and abroad has only developed to the similarity measurement of multi-hole surface entities, and there is no more complex calculation model for the similarity of complex surface entities with holes.

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