Water color detecting method and device based on MODIS image

A technology of water body color and detection method, which is applied in the field of remote sensing image color parameter extraction, and can solve problems such as large variation range and complex and changeable water body optical characteristics.

Active Publication Date: 2015-02-18
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventors of the present invention have found that: at present, it is a demand to use remote sensing means to perform macroscopic and long-term remote sensing detection of the color of water bodies; and three main photoactive substances in water bodies: phytoplankton, suspended matter and colored soluble organic matter Together determine the color of the water body; in the water body, the three substances show various possible combinations, the concentrations of the three substances change independently and in a wide range, and the optical properties of the water body are complex and changeable, making water color remote sensing a multi-variable non- Linear complex problems; therefore, there is no solution in the prior art that can be applied to macroscopic, large-scale, long-term remote sensing detection of water body color by means of remote sensing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water color detecting method and device based on MODIS image
  • Water color detecting method and device based on MODIS image
  • Water color detecting method and device based on MODIS image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] 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.

[0059] figure 1 The flow chart of the water body color detection method based on MODIS image provided by the embodiment of the present invention, the method can be applied to electronic equipment with data processing capability, refer to figure 1 , the method can include:

[0060] Step S100, acquiring a MODIS image reflecting the color of the water body and having a combination of RGB bands;

[0061] Optionally, the MODIS image can be considered as the image...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The embodiment of the invention provides a water color detecting method and device based on an MODIS image. The method comprises the steps of acquiring the MODIS image which reflects the color of water and is provided with an RGB band combination; converting the RGB value of each pixel of the MODIS image into tristimulus values; calculating the chromaticity coordinates of each pixel in a chromaticity diagram coordinate system based on the tristimulus values of each pixel; calculating the new coordinates of the chromaticity coordinates of each pixel in a predetermined coordinate system; calculating the included angle between the new coordinate point of each pixel and the X axis of the predetermined coordinate system; determining the color dominant wavelength of each included angle according to the corresponding relation between a predetermined included angle and a color dominant wavelength, and determining the water color level of each included angle according to the corresponding relation between the predetermined included angle and the water color level; determining water color according to the determined color dominant wavelengths and the determined water color levels. By the adoption of the embodiment, macroscopic wide-range long-term remote sensing detection of water color is achieved in a remote sensing way.

Description

technical field [0001] The present invention relates to the technical field of remote sensing image color parameter extraction, more specifically, to a water body color detection method and device based on MODIS (Moderate-resolution Imaging Spectroradiometer) images. Background technique [0002] The color of the water body is the direct result of the interaction between the sun's rays and the photoactive substances in the water body in the visible light range, and is closely related to the water quality of the water body. Water body color is one of the routine monitoring indicators of water quality, so the detection of water body color is of great significance for water quality monitoring. [0003] The inventors of the present invention have found that: at present, it is a demand to use remote sensing means to perform macroscopic and long-term remote sensing detection of the color of water bodies; and three main photoactive substances in water bodies: phytoplankton, suspend...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G01N21/25
CPCG06T7/001G06T2207/10032G06T2207/30168G06T2207/30188
Inventor 张兵李俊生申茜张方方王胜蕾
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products