Automatic barb river identification method based on spatial pattern matching

A technology of spatial pattern and automatic recognition, applied in the fields of geographic information technology and hydrology, which can solve the problems of different interpretation quality and low recognition efficiency.

Active Publication Date: 2020-07-17
NANJING NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The recognition efficiency of this method is low, and the interpretation quality varies from person to person

Method used

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  • Automatic barb river identification method based on spatial pattern matching
  • Automatic barb river identification method based on spatial pattern matching
  • Automatic barb river identification method based on spatial pattern matching

Examples

Experimental program
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Embodiment Construction

[0092] The technical scheme of the present invention is described in detail below, what the experimental data of this example adopted is the vector water system data of Bomi County, Tibet Autonomous Region ( figure 1 ). There are rich types of water systems in the area, and the impact of tectonic movement on their formation is obvious. Further explanation will be given below by describing a specific embodiment in conjunction with the accompanying drawings.

[0093] Such as figure 2 As shown, the Barb River automatic recognition method based on spatial pattern matching provided in this embodiment specifically includes the following steps:

[0094] (1) Based on the vector water system layer of the research area, the approximate straight-line river sections that meet the preset length requirements are abstracted into nodes, and the node set V is generated.

[0095] Such as image 3 As shown, this step specifically includes:

[0096] (1-1) Read the river data from the vector...

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Abstract

The invention discloses an automatic barb river identification method based on spatial pattern matching, which specifically comprises the following steps: firstly, constructing an ARG model of a drainage basin based on a vector water system layer of a research area; secondly, based on the planar form and spatial structure characteristics of the barbed river, generating a spatial mode definition ofthe barbed river; then, based on a spatial pattern matching method, identifying all barb river sub-graphs in the research area; and finally, based on the identified barbed river sub-graph set, generating a barbed river graph layer. The invention realizes a method for quickly realizing automatic identification of the barbed river based on the water system layer. Compared with the prior art, the method improves the recognition accuracy, and is better in dynamic expansion capability.

Description

technical field [0001] The invention relates to the fields of geographic information technology and hydrology, in particular to an automatic recognition method for Barb River based on spatial pattern matching. Background technique [0002] The water system is a channel system composed of rivers of different grades within the basin. In addition to being controlled by the natural environment, the formation of the morphological characteristics of the water system is also affected by the geological structure. A large number of studies have shown that the drainage system style, river terrace, and valley shape will respond positively to tectonic activities such as folding and faulting. Through the analysis of water system characteristics such as water system density and morphological characteristics, the analysis of geological structure and crustal movement can be realized indirectly. [0003] The basic feature of the Barb River is that the tributaries join the main stream in th...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F16/29G06F16/901
CPCG06F16/29G06F16/9024G06V20/182
Inventor李安波董甜甜徐诗宇解宪丽
OwnerNANJING NORMAL UNIVERSITY