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Surface water information extraction method based on normalized water excavation index

A technology for information extraction and water body information, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as poor work efficiency and low degree of automation, and achieve the effect of improving accuracy and overcoming confusion.

Inactive Publication Date: 2016-10-19
中国人民解放军沈阳军区司令部工程科研设计所
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Problems solved by technology

[0005] The technical problem to be solved in the present invention is: the existing surface water body extraction method has low degree of automation and poor work efficiency, and it is difficult to overcome the problem of water body being confused with other ground objects

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  • Surface water information extraction method based on normalized water excavation index
  • Surface water information extraction method based on normalized water excavation index
  • Surface water information extraction method based on normalized water excavation index

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Embodiment Construction

[0033] The method for extracting surface water information based on the normalized water body mining index of the present invention will be described in detail below with reference to the drawings and embodiments.

[0034] Such as figure 1 As shown, a method for extracting surface water information based on a normalized water body mining index of the present invention includes the following steps:

[0035] Step 1. Select remote sensing feature index

[0036] Select six remote sensing feature indexes, namely the normalized vegetation index NDVI and the ratio vegetation index RVI that can extract vegetation information, the improved normalized difference water index MNDWI that can extract water body information well, and can effectively extract building information The normalized building difference index NDBI, and the soil index SI and bare soil index BI that can extract soil information.

[0037] The six remote sensing feature indexes are calculated using the following formula:

[0038...

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Abstract

The invention belongs to the technical field of remote sensing information extraction, and specifically relates to a surface water information extraction method based on a normalized water excavation index. The method comprises the following steps: selecting a remote sensing characteristic index; establishing a typical ground object remote sensing characteristic curve; calculating a normalized surface water body excavation index; and extracting surface water body information. The method solves technical problems that an existing surface water body extraction method is low in automation degree and poor in working efficiency, and effectively overcomes phenomenon that water body is confused with other ground objects. The method is obviously improved in precision, and makes a new breakthrough in water body automatic extraction. The method is suitable to be used for automatic extraction of massive data surface water body.

Description

Technical field [0001] The invention belongs to the technical field of remote sensing information extraction, and specifically relates to a surface water information extraction method based on a normalized water body mining index. Background technique [0002] Water resources are irreplaceable resources that human beings rely on for survival, and surface water is one of the important water resources, and it has an important position in people's production and life. Extracting surface water information, analyzing its distribution characteristics, and calculating its area and water volume are of great significance to the development, protection and utilization of water resources. With the emergence of remote sensing, the extraction of water body information has gradually developed in the direction of rapid, efficient, high-precision, and highly automated. [0003] The current methods of using remote sensing to extract surface water information mainly include band threshold method, s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 于德浩龙凡李霞杨清雷韩天成王康张宣宣王李韩坦董德坤张垚李宗科白帆
Owner 中国人民解放军沈阳军区司令部工程科研设计所
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