Boundary interaction-based area combination topological similarity measurement method

A similarity measurement and similarity technology, applied in the field of geographic information science, can solve problems such as difficult to identify topological equivalence, and achieve the effect of convenient quantitative calculation and easy qualitative description

Inactive Publication Date: 2017-02-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
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However, when complex boundary interactions occur, it is difficult for the ab

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  • Boundary interaction-based area combination topological similarity measurement method
  • Boundary interaction-based area combination topological similarity measurement method
  • Boundary interaction-based area combination topological similarity measurement method

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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] On the basis of the topological relationship of zone boundary interaction, a boundary interaction-based zone combination topological similarity measurement model is used for complex topological relationships. This model obtains their boundary interaction records by analyzing the topological relationship between complex entities, and converts the interaction records Become a binary sequence, so as to realize the conversion of similarity evaluation into a sequence calibration process, and divide the calibration process into two parts: initial matching and exact matching, so as to impro...

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Abstract

The invention relates to the field of geographic information science, in particular to a boundary interaction-based area combination topological similarity measurement method. The method comprises the following steps of obtaining a boundary interaction record of complex entities by analyzing a topological relation between the complex entities based on a topological relation of area boundary interaction, and converting the interaction record into a binary sequence, thereby converting similarity assessment into a sequence calibration process; and representing a reference area combination and a candidate area combination by using CR and CP respectively, and then calculating topological similarity between the reference area combination CR and the candidate area combination CP by setting a weight of the similarity between a dimension sequence and a detail sequence. The method has the following advantages: 1), the topological relation between composite space objects, and the topological similarity difference can be well distinguished; and 2), various possible results are provided for users more visually.

Description

technical field [0001] The invention relates to aspects such as artificial intelligence, geographic space scene, similarity measurement, etc., and belongs to the field of geographic information science. Background technique [0002] In some research fields such as geographic information system (GIS), image retrieval or spatio-temporal database, a group of more important spatial relations are topological relations. The topological relationship describes the essence of the spatial scene and preserves translation, scaling and rotation invariance. The topological relationship models of current district objects are mainly divided into two categories, (1) for simple districts: based on calculus method, point set topology, 4-intersection model, derived 9-intersection model and region connection calculus (RCC-8), etc.; (2) For complex areas: such as the RCC-8 combination table, the extension of the 4-intersection model, the topological relationship model (TRCR) of the combination a...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29
Inventor 陈占龙谢忠吴亮张丁文徐永洋龚希叶文朱榕榕
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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