Urban green land automatic extraction method based on unmanned aerial vehicle data

An automatic extraction and unmanned aerial vehicle technology, applied in the field of urban surveying and mapping, can solve the problems of large manpower and time, and achieve the effect of fast speed, flexible data acquisition and high resolution

Inactive Publication Date: 2020-04-03
南京搜天数据科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for automatically extracting urban green space based on UAV data, to solve the problem that most of the green space statistical methods proposed in the above-mentioned background technology are manually investigated and measured. Although the accuracy is high, a large amount of manpower and time are required. question

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  • Urban green land automatic extraction method based on unmanned aerial vehicle data
  • Urban green land automatic extraction method based on unmanned aerial vehicle data
  • Urban green land automatic extraction method based on unmanned aerial vehicle data

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Embodiment Construction

[0020] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.

[0021] An embodiment provided by the invention: a method for automatically extracting urban green spaces based on drone data, comprising the following steps:

[0022] Step 1: Prepare the drone, select the surveying range, and design the shooting route and shooting height;

[0023] Step 2: Start the drone for shooting, the shooting height is 250-500m, the shooting height is adjusted by the weather visibility of the day and the focal length of the camera lens of the drone;

[0024] Step 3: Perform distortion correction on the captured original image, perform aerial triangulation, and then perform splicing, correction and color correction to obtain an orthophoto;

[0025] Step 4: Automatically interpret by computer, and then use the method o...

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Abstract

The invention discloses an automatic urban greenbelt extraction method based on unmanned aerial vehicle data, relates to the technical field of urban surveying and mapping methods, and aims to solve the problem that most greenbelt statistical methods are used for surveying and measuring manually, and although precision is high, a large amount of manpower and time are needed. The method comprises the following steps: step 1, an unmanned aerial vehicle is prepared, a surveying and mapping range is selected , and a shooting route and a shooting height are designed; step 2, the unmanned aerial vehicle is started for shooting, and the shooting height is 250-500 m; step 3, distortion error correction is carried out on the shot original image, aerial triangulation is carried out, then splicing, correction and color modulation are carried out, and an orthoimage is obtained; step 4, automatic interpretation is conducted through a computer, and then the greening coverage area is sketched througha manual interpretation method; step 5, the unmanned aerial vehicle image is recognized and extracted through a maximum likelihood classification method; and step 6, the vectorized data is topologically drawn so as to establish a greenbelt information database.

Description

technical field [0001] The invention relates to the technical field of urban surveying and mapping methods, in particular to an automatic extraction method for urban green spaces based on drone data. Background technique [0002] Urban green space refers to urban land with natural vegetation and artificial vegetation as the main forms. It includes two levels of content: one is land used for greening within the scope of urban construction land; Mastering the area and distribution of urban green space is the basic work for effective management of urban green space. [0003] At present, most of the green space statistics methods on the market are manually surveyed and measured. Although the accuracy is high, it requires a lot of manpower and time. Therefore, there is an urgent need in the market for an automatic urban green space extraction method based on drone data to solve these problems. Contents of the invention [0004] The purpose of the present invention is to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/34G01C11/04G06F16/29G06K9/00
CPCG01C11/34G01C11/04G06F16/29G06V20/188
Inventor 李卫正乌日汗
Owner 南京搜天数据科技有限公司
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