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Different-period spatial entity hierarchical matching method and system based on multi-source information

A multi-source information and matching method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as missing matching efficiency, and achieve the effect of improving matching efficiency, fast and efficient matching, and reliable technical support

Inactive Publication Date: 2015-01-28
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a hierarchical matching method and system for spatial entities in different periods based on multi-source information, so as to solve the problems of missing matching and low matching efficiency in the matching process of spatial entities in different periods

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  • Different-period spatial entity hierarchical matching method and system based on multi-source information
  • Different-period spatial entity hierarchical matching method and system based on multi-source information

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Embodiment Construction

[0036] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] Embodiment of the present invention's multi-source information-based hierarchical matching method for spatial entities in different periods

[0038] The present invention aims at the deficiencies of the existing technical solutions and the characteristics of the spatial data of land use status in different periods, and describes the implementation process of the multi-source information-based spatial entity hierarchical matching method in different periods provided by the present invention. The method specifically includes the following steps :

[0039] 1. Create a dataset index. In order to improve the efficiency of matching execution, before the formal matching, an index should be established for the target data set to be matched according to the needs of the next matching. The built indexes are mainly divided into two categories:...

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Abstract

The invention relates to a different-period spatial entity hierarchical matching method and system based on multi-source information, and belongs to the technical field of data processing. The method comprises the following steps: firstly, judging whether a reference entity and a target entity satisfy attribute matching or not; if the reference entity and the target entity satisfy the attribute matching, showing that the target entity is a matching entity, and otherwise, carrying out geometric matching to the target entity to judge whether the target entity satisfies geometric matching or not; if the target entity satisfies the geometric matching, showing that the target entity is the matching entity, and otherwise, carrying out topological matching to the target entity; and if the target entity satisfies the topological matching, showing that the target entity is the matching entity. Through the above three levels of judgment, different-period spatial entity hierarchical matching can be realized. Meanwhile, in order to improve matching efficiency, an index is established for a target data set to be matched before formal matching. Through the above scheme, the quick and efficiency matching of different-period land use data spatial entities can be realized, and reliable technical support is provided for the uniformization processing, the change retrospect and statistic analysis as well as trend prediction and analogy of land use data.

Description

technical field [0001] The invention relates to a hierarchical matching method and system for spatial entities in different periods based on multi-source information, and belongs to the technical field of data processing. Background technique [0002] With the development and implementation of land use surveys and change surveys, land management departments at all levels in my country have accumulated a series of spatial data sets of land use status in different periods (such as figure 1 shown). However, due to the differences in the background, legal basis, classification system, technical standards, and operating specifications of each survey, as well as collection errors and changes in reality, the same land use spatial entity (usually represented by be polygons, lines, or points) in various ways in terms of geometry, attribute semantics, etc. In order to make comprehensive use of these data to accurately analyze, evaluate and predict land use changes, development laws ...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06Q50/26
CPCG06F16/2291G06F16/2228G06Q50/26
Inventor 王育红张合兵郭增长徐君
Owner HENAN POLYTECHNIC UNIV
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