Water bloom distribution and extraction method based on environmental satellite No.1

An extraction method and algal bloom technology, applied in the field of algal bloom distribution extraction based on the Environment-1 satellite, can solve the problems of large workload of human-computer interaction interpretation, limited accuracy, and difficulty in locating boundaries, reaching the level of automatic computer interpretation. high effect

Inactive Publication Date: 2011-06-08
SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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Problems solved by technology

The commonly used human-computer interaction interpretation based on expert knowledge is aimed at the lake cyanobacteria bloom extraction mode based on satellite multispectral data. The human-computer interaction interpretation workload is large and it is difficult to locate the boundary, and the accuracy is limited.

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  • Water bloom distribution and extraction method based on environmental satellite No.1
  • Water bloom distribution and extraction method based on environmental satellite No.1

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Embodiment Construction

[0023] The method for extracting the distribution of water blooms based on the Environment-1 satellite proposed by the present invention is described in detail in conjunction with the accompanying drawings and embodiments as follows.

[0024] The "Environment-1" (HJ-1A / B) satellite system is an earth observation system approved by the State Council of China for environmental and disaster monitoring. All-day, dynamic environment and disaster monitoring capabilities. HJ-1A / B star data can not only provide an important guarantee for the environment and disaster reduction business operation system, but also become an important data source for the daily business of many departments. The environment and disaster reduction application system based on environmental satellite data has an important demonstration role in promoting remote sensing satellite business services.

[0025] Such as figure 1 As shown, the method for extracting water bloom distribution based on HJ-1A / B according...

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Abstract

The invention discloses a water bloom distribution and extraction method based on an environmental satellite No.1. The method comprises the following steps of: (S1) calculating a normalized vegetation index according to a multi-spectrum remote sensing graph of the environmental satellite No.1; (S2) distinguishing a water body and water bloom waterweed according to the normalized vegetation index to acquire binary graphs of the water body and the water bloom waterweed; (S3) acquiring a water bloom water body binary graph by combining an inversion result of high-spectrum data according to the binary graphs of the water body and the water bloom waterweed; and (S4) inputting a water body distribution map, carrying out the band calculation on the water bloom water body binary graph and the water body distribution map, generating trinary graphs of the water bloom, the water body and the land and extracting the water bloom distribution map. The method provided by the invention enriches the research contents extracted by the water bloom distribution of the current multi-spectrum data, has high automatic interpretation degree of the computer, and can be run in different software modes and be suitable for developing service operation monitoring work.

Description

technical field [0001] The invention relates to the technical field of water bloom monitoring and remote sensing, in particular to a method for extracting water bloom distribution based on the Environment-1 satellite. Background technique [0002] A bloom is a natural ecological phenomenon in freshwater caused by algae blooms. It is generally believed that algae bloom refers to a large number of algae floating or suspended on the water surface, and the water area where algae bloom occurs is generally in a state of severe eutrophication. Since the algae bloom is located above the water surface and blocks the water body, remote sensing data in the algae bloom area cannot be used to invert water quality parameters. Therefore, when inverting water quality parameters by remote sensing, it is also necessary to first identify the algae bloom, and then use non-algae blooms and aquatic plants. The remote sensing data of ordinary water bodies participate in the inversion calculation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/46G06F9/38
Inventor 王桥
Owner SATELLITE ENVIRONMENT CENT MINIST OF ENVIRONMENTAL PROTECTION
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