Urban black and odorous water body grading method based on spectrum matching

A black and odorous water body and spectrum matching technology, applied in the field of remote sensing, can solve the problem of little research involved in the classification of black and odorous degrees.

Active Publication Date: 2020-04-10
NANJING NORMAL UNIVERSITY
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  • Abstract
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Problems solved by technology

The above studies only carried out research on the identification of black and od

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  • Urban black and odorous water body grading method based on spectrum matching
  • Urban black and odorous water body grading method based on spectrum matching
  • Urban black and odorous water body grading method based on spectrum matching

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[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0049] 74 field measurements obtained from 8 experiments in May, July, 2017, April, and September 2018 in Nanjing, July 2018, April 2019 in Yangzhou, October 2017 in Changzhou, and September 20...

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Abstract

The invention discloses an urban black and odorous water body grading method based on spectral matching. The method comprises the following steps: dividing actually measured water body remote sensingreflectivity into six grades according to chromaticity judged in the field; taking the mean value of the actually measured water body remote sensing reflectivity of each grade as a standard spectrum of each grade; performing spectral analysis on the six levels of standard spectra to obtain spectral difference waveband ranges among different levels of water bodies; and constructing an urban black and odorous water body grading method based on spectral matching to distinguish water bodies of all grades one by one; and classifying the distinguished urban water bodies with various chromaticity grades into water body grades with different black and odorous degrees, wherein the overall grading precision is 77.03%.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a method for grading urban black and odorous water bodies based on spectral matching. Background technique [0002] With the acceleration of urbanization and industrialization, as well as the increasing number of urban residents, the pollution of urban rivers continues to intensify, presenting a large number of black and odorous water bodies, which not only affects the urban landscape and the lives of citizens, but also affects the urban ecosystem and industrial , Harm to agricultural production. The restoration and governance of urban water ecosystems have attracted widespread attention from the government and society. [0003] The so-called "black odor" refers to an extreme phenomenon of organic pollution in water bodies (Ruan Renliang et al., 2002). It is caused by the lack of oxygen in the water body and the corruption of organic matter. It emits a pungent and disgust...

Claims

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Application Information

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IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 许佳峰吕恒李云梅朱利周亚明
Owner NANJING NORMAL UNIVERSITY
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