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Quick extraction method and device for city built-up area boundary, and terminal equipment

An extraction method and extraction device technology, which are applied in image data processing, instruments, calculations, etc., can solve the problems of low boundary delineation accuracy and low calculation efficiency, and achieve high boundary delineation accuracy, easy data sorting, and labor-intensive labor. low cost effect

Active Publication Date: 2018-08-17
SHIJIAZHUANG TIEDAO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a method, device, and terminal equipment for quickly extracting the boundaries of urban built-up areas to solve the problems of low calculation efficiency and low boundary delineation accuracy of urban boundary extraction methods in the prior art

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  • Quick extraction method and device for city built-up area boundary, and terminal equipment
  • Quick extraction method and device for city built-up area boundary, and terminal equipment
  • Quick extraction method and device for city built-up area boundary, and terminal equipment

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Embodiment 1

[0055] see figure 1 , which shows a schematic diagram of the implementation flow of the method for quickly extracting the boundaries of urban built-up areas provided by the embodiment of the present invention, and is described in detail as follows:

[0056] Step S101, acquiring a panchromatic image and a multispectral image of a city, and performing image fusion on the panchromatic image and the multispectral image to obtain a fused multispectral image.

[0057] Before extracting the boundary of urban built-up area, the original image is obtained first, and the original image is a remote sensing image. The remote sensing image used in the traditional method of extracting the boundary of urban built-up area is a panchromatic image, which has the characteristics of high resolution, but cannot obtain the edge features of the image, so that the accuracy of the extracted boundary features will also decrease . Therefore, in this embodiment, the panchromatic image and the multi-spe...

Embodiment 2

[0105] Corresponding to the method for quickly extracting the boundaries of urban built-up areas described in the first embodiment above, Figure 8 The figure shows the device for quickly extracting the boundary of urban built-up areas provided by Embodiment 2 of the present invention, and for the convenience of description, only the parts related to this embodiment are shown.

[0106] The device includes an image fusion module 101 , an image binarization module 102 , a morphological transformation module 103 , a road elimination module 104 and a boundary extraction module 105 .

[0107] The image fusion module 101 is configured to acquire a panchromatic image and a multispectral image of a city, and perform image fusion on the panchromatic image and the multispectral image to obtain a fused multispectral image. The image binarization module 102 is used to perform block processing on the fused multispectral image to obtain a plurality of multispectral sub-block images, and use...

Embodiment 3

[0119] Figure 9 It is a schematic diagram of the terminal device 90 for quickly extracting the boundaries of urban built-up areas provided by Embodiment 3 of the present invention. like Figure 9As shown, the terminal device 90 for quickly extracting the boundaries of urban built-up areas in this embodiment includes: a processor 900, a memory 901, and a computer program 902 stored in the memory 901 and operable on the processor 900, for example, using The procedure for determining the road boundary by the husband transformation. When the processor 900 executes the computer program 902, it implements the steps in the above-mentioned embodiments of the rapid extraction method for each urban built-up area boundary, for example figure 1 Steps S101 to S104 are shown. Alternatively, when the processor 900 executes the computer program 902, it realizes the functions of the modules / units in the above-mentioned device embodiments, for example Figure 8 The functions of modules 101...

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Abstract

The invention is suitable for the technical field of the city planning technology, and provides a quick extraction method and device for a city built-up area boundary, and terminal equipment. The method comprises the following steps that: obtaining the panchromatic image and the multispectral image of a city, and carrying out image fusion on the obtained panchromatic image and multispectral image;carrying out blocking processing on the fused image to obtain a plurality of multi-spectrum sub-block images, and adopting a multi-spectrum image edge detection operator to carry out edge extractionand image binaryzation on a single-spectrum component in the multi-spectrum sub-block images; carrying out morphology transformation processing on a binary image; carrying out Hough transformation onthe image subjected to morphological transformation to obtain the road of an image and carry out road elimination; and adopting the edge detection operator to obtain an image boundary line of which the road is eliminated to obtain a city built-up area boundary image. By use of the method, the image is subjected to edge extraction through sub-blocks, algorithm efficiency is improved, and meanwhile,the multi-spectrum image and the panchromatic image are fused to improve the accuracy of the algorithm.

Description

technical field [0001] The invention belongs to the technical field of urban planning, and in particular relates to a method, device and terminal equipment for quickly extracting boundaries of urban built-up areas. Background technique [0002] In recent years, my country's aerospace industry and new sensor technology have developed rapidly, and the resolution of satellite remote sensing images has become higher and higher, and the amount of information contained has become more and more abundant. In order to meet the country's new urbanization development requirements and avoid unreasonable use of land and waste of land resources in the process of urban development, urban and rural planning departments at all levels actively carry out and promote the delineation of urban boundaries. "Urban built-up area boundary" generally refers to the urban built-up area boundary extracted from remote sensing images, that is, the boundary between the requisitioned land within the urban ad...

Claims

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Application Information

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IPC IPC(8): G06T7/11G06T7/13G06T7/155G06T5/50G06T5/30G06T5/00
CPCG06T5/30G06T5/50G06T7/11G06T7/13G06T7/155G06T2207/20221G06T2207/10036G06T5/80G06T5/70
Inventor 袁牛涛刘展威陈超
Owner SHIJIAZHUANG TIEDAO UNIV
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