Water bloom identification method and device based on hyperspectral remote sensing image

A hyperspectral remote sensing and image technology, which is applied in the field of algal bloom identification methods and devices, and can solve problems such as identifying algal bloom areas.

Inactive Publication Date: 2015-12-09
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

[0004] This application provides a method and device for identifying water blooms based on hyperspectral remote sensing images, with the purpose of solving the problem of how to identify areas of water blooms from remote sensing images

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  • Water bloom identification method and device based on hyperspectral remote sensing image
  • Water bloom identification method and device based on hyperspectral remote sensing image
  • Water bloom identification method and device based on hyperspectral remote sensing image

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Embodiment Construction

[0046]The method and device for identifying water blooms based on hyperspectral remote sensing images disclosed in the embodiments of the present application can be applied to scenarios where remote sensing is used to identify water blooms, where hyperspectral images refer to very high spectral resolution (visible light bands usually reach 10nm) and Spectral continuous remote sensing images.

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0048] A water bloom identification method based on hyperspectral remote sensing images di...

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Abstract

The invention provides a water bloom identification method and device based on a hyperspectral remote sensing image, and the method comprises the steps: obtaining a hyperspectral remote sensing water area image; calculating a chlorophyll a spectrum index value and phycocyanin baseline value of each pixel in the hyperspectral remote sensing water area image; recognizing pixels with the chlorophyll a spectrum index values being greater than a preset first threshold value as a target region; enabling pixels with the phycocyanin baseline values being greater than a preset second threshold value in the target region as a water bloom region. Because the chlorophyll a spectrum index value of water is remarkably less than the chlorophyll a spectrum index value of water bloom and water plants and the phycocyanin baseline value of the water plants is remarkably less than the phycocyanin baseline value of the water bloom, the method and device achieve the purpose of recognizing the water bloom region according to the characteristics of water bloom spectra.

Description

technical field [0001] The present application relates to the field of remote sensing image processing, in particular to a method and device for identifying water blooms based on hyperspectral remote sensing images. Background technique [0002] Algae blooms generally refer to the phenomenon that when the biomass of phytoplankton is significantly higher than the average value in the water body, they accumulate in large quantities on the surface of the water body to form algae accumulations visible to the naked eye. The outbreak of algae blooms indicates that the water environment has suffered serious damage at this time Eutrophication pollution. Aquatic plants mainly include emergent, submerged and floating-leaf plants that can live in water for a long time. As primary productivity, aquatic plants are an important part of biodiversity and can improve the environment of inland water bodies. Therefore, the monitoring of algal blooms and aquatic plants is of great significance...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/13
Inventor 张兵李俊生申茜张方方朱庆
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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