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
CN108416784AActive Publication Date: 2018-08-17SHIJIAZHUANG TIEDAO UNIV +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHIJIAZHUANG TIEDAO UNIV
Publication Date
2018-08-17

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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.
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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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