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Water body extraction method, device and equipment and storage medium

A water body extraction and water body technology, applied in the direction of measuring devices, instruments, analysis materials, etc., can solve the problems of finely broken water body extraction algorithms, etc., achieve high accuracy and eliminate the effect of building shadows

Pending Publication Date: 2020-06-26
北京观澜智图科技有限公司
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Problems solved by technology

[0004] However, the current water body extraction algorithms are mainly aimed at large and medium-sized lakes or large rivers, and these algorithms cannot realize the water body extraction algorithm for small and broken water bodies.

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  • Water body extraction method, device and equipment and storage medium
  • Water body extraction method, device and equipment and storage medium
  • Water body extraction method, device and equipment and storage medium

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] At present, there is no conventional definition of small water bodies in remote sensing images. For example, there is a plan to define small water bodies as narrow water bodies whose apparent width of pixels in remote sensing images is less than or equal to 3 pixels. In the embodiment of this application, small water bodies are defined as small rivers or ponds whose apparent width of pixels in remote sensing images is greater than or equal to 5 pixels an...

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Abstract

The embodiment of the invention discloses a water body extraction method, device and equipment and a storage medium. The method includes: calculating a water body index of each pixel point by utilizing the remote sensing reflectivity of a green light waveband, the remote sensing reflectivity of a red edge waveband 1, the remote sensing reflectivity of a near infrared waveband, the remote sensing reflectivity of a red edge waveband 2 and the remote sensing reflectivity of a short wave infrared waveband in the remote sensing image of which the spatial resolution is higher than the target resolution; and determining whether each pixel point belongs to the water body based on the water body index. On the basis of the scheme, water extraction can be carried out on large and medium lakes and reservoirs or large rivers, and fine and broken water can also be extracted. Moreover, the method can eliminate the impact from building shadows, the impact from mixed pixels at the boundary of the waterbody, and the impact from thick cloud and cloud shadows, and is higher in water body extraction accuracy.

Description

technical field [0001] The present application relates to the technical field of water body extraction, and more specifically, relates to a water body extraction method, device, equipment and storage medium. Background technique [0002] For many years, the ecological, social, health and economic effects of surface water changes have been a concern of academic circles. It is of great significance to extract surface water bodies quickly, accurately and efficiently. [0003] In recent years, remote sensing images with different resolutions have been widely used in water body information extraction. Many scholars have carried out extensive research on water body information remote sensing processing models and quantitative extraction methods, and achieved many research results. [0004] However, the current water body extraction algorithms are mainly aimed at large and medium-sized lakes or large rivers, and these algorithms cannot realize the water body extraction algorithm f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G01N21/359G01N21/55G01N21/47
CPCG01N21/359G01N21/55G01N21/4738G01N2021/4769G06V20/13G06F18/241Y02A90/30
Inventor 姚月汪明秀宋彩虹
Owner 北京观澜智图科技有限公司
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