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Flood coverage extraction method based on remote sensing images

A remote sensing image and extraction method technology, applied in the field of remote sensing applications, can solve problems such as flood areas where accuracy cannot be obtained, and achieve the effect of clear and intuitive algorithm thinking, easy promotion and use, and fast and accurate acquisition

Active Publication Date: 2022-08-05
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] It can be seen that neither optical remote sensing data nor radar remote sensing data alone can obtain the flood area with high accuracy. Therefore, how to extract the flood coverage area more accurately is the focus of current research

Method used

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  • Flood coverage extraction method based on remote sensing images
  • Flood coverage extraction method based on remote sensing images
  • Flood coverage extraction method based on remote sensing images

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0042] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0043] The present invention will be further described below in conjunction with specific embodiments, but not as a limitation of the present invention.

[0044] The present invention provides a method for extracting flood coverage based on remote sensing images, comprising the following steps: ...

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Abstract

The present invention provides a method for extracting flood coverage based on remote sensing images, comprising the following steps: S1: Obtaining Landsat optical remote sensing image data, calculating its historical water distribution probability, and obtaining a perennial water area distribution map by setting a distribution probability threshold; S2 : Obtain satellite radar remote sensing image data, calculate the statistical information of each pixel in the time domain within the set time range, and use the statistical threshold method to calculate the distribution map of the current water area; S3: Combine the perennial water area and the current water area to conduct flood coverage types Classification to extract current flood coverage at different levels. The present invention combines historical and current water body distribution to extract the flood coverage area, and can quickly and accurately obtain the current flood coverage area.

Description

technical field [0001] The invention belongs to the technical field of remote sensing applications, and in particular relates to a method for extracting flood coverage of remote sensing images based on a water body distribution rate and a statistical threshold. Background technique [0002] As the most frequent natural disaster in the world, floods seriously threaten the safety of people's lives and property. Therefore, in order to quickly analyze the disaster situation and provide rescue, it is necessary to quickly extract information on sudden floods. Satellite remote sensing images, as an important means of monitoring surface information in recent years, also have great advantages in extracting water bodies. [0003] Remote sensing data commonly used for large-scale flood assessments include optical and radar remote sensing data. Optical remote sensing data is large in volume and high in resolution, and there is extensive research on water extraction, but water extracti...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/136G06T7/62G01S7/41
CPCG06T7/0002G06T7/136G06T7/62G01S7/41G06T2207/10032G06T2207/30181
Inventor 黄文丽冯梅陈淑杰
Owner WUHAN UNIV
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