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Urban and rural black and odorous water blackness evaluation method

A black and odorous water body and evaluation method technology, applied in the fields of instruments, character and pattern recognition, data processing applications, etc., can solve the problems of differences in evaluation results, inability to effectively judge the relatively independent situation of black and odorous water bodies, and avoid human subjectivity. The effect of judging errors, realizing high-frequency automatic detection, and realizing real-time automatic processing and evaluation

Pending Publication Date: 2022-03-22
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] Most of the existing evaluation methods cannot effectively judge the relative independence of black and odorous water bodies, and the evaluation results of different evaluation methods will also vary greatly

Method used

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  • Urban and rural black and odorous water blackness evaluation method
  • Urban and rural black and odorous water blackness evaluation method
  • Urban and rural black and odorous water blackness evaluation method

Examples

Experimental program
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Effect test

Embodiment

[0043] A method for evaluating the blackness of black and odorous water bodies in urban and rural areas, such as figure 1 shown, including the following steps:

[0044] Obtain river channel images of black and odorous water bodies;

[0045] Convert the color image in RGB space to HSV color space;

[0046] Using K-means clustering method to extract the main color features of the image;

[0047] Perform main color sorting and return image RGB data;

[0048] Introduce the grayscale model to calculate the main color grayscale value Gray;

[0049] Analyze the proximity of the R / G / B three-color channel to black to judge the blackness of the water body.

[0050] details as follows:

[0051] Step 1: Select 17 urban rivers in 11 cities in Sichuan Province that have or are currently experiencing black and odorous rivers, conduct field investigations from December 2 to 10, 2019, and use uniform angles and light to face the water bodies of black and odorous rivers in each monitoring ...

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Abstract

The invention provides an urban and rural black and odorous water body blackness evaluation method. The method comprises the following steps: step 1, obtaining a color image of an RGB space of a black and odorous water body river channel; 2, converting a color image of an RGB space of the river channel image into an HSV color space; 3, performing image main color feature extraction on the HSV color space by using a K-means clustering method; 4, sorting main colors, and returning the RGB data of the image; 5, introducing a gray model to calculate a main color gray value Gray; and 6, analyzing the closeness degree of R / G / B three-color channels and black, and judging the blackening condition of the water body. The method is an independent evaluation method capable of judging blackening and blackening degree of the water body, so that the evaluation accuracy of the blackening degree of the water body is improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for evaluating the blackness of black and odorous water bodies in urban and rural areas. Background technique [0002] Due to the continuous acceleration of urban development in my country, 2,869 rivers in 295 prefecture-level and above cities across the country have serious black and odorous water phenomena. The black and smelly water directly leads to the death of some organisms in the water. The smell of the river seriously affects the health of the surrounding residents. At the same time, the blackness of the river will affect the appearance of the city. If it exists for a long time, it will also reduce the quality of the urban ecological environment. The black and smelly water must be treated and eliminated. In the process of treatment and elimination, effective methods must be used to quickly screen out black and odorous water bodies. In the proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26G06V10/56G06V10/762G06K9/62
CPCG06Q10/0639G06Q50/26G06F18/23213
Inventor 刘静余好何天煜刘国张琪琪李尚书袁培炎
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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