Method for obtaining concentration of particles in air based on image processing

A particle concentration and image processing technology, applied in the field of computer vision, can solve problems such as unfavorable promotion, complicated operation, and high cost, and achieve the effects of easy promotion, convenient use, and low cost

Active Publication Date: 2014-09-03
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

However, the current monitoring network still has many limitations
First of all, professional equipment such as vibrating balances and Beta ray meters are expensive and complicated to operate, which is not conducive to popularization
Secondly, the number of monitoring sites in a city is also limited, and the effec

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  • Method for obtaining concentration of particles in air based on image processing
  • Method for obtaining concentration of particles in air based on image processing
  • Method for obtaining concentration of particles in air based on image processing

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Embodiment Construction

[0014] The present invention will be described in further detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0015] The present invention uses image processing and recognition technology to process images captured by image capturing devices such as video cameras or cameras, and extract the particle concentration information in the air, that is, the PM value of the images. Reminiscent of current large and medium-sized cities, there are a large number of fixed monitoring cameras covering a large part of the city, so the method of the present invention is suitable for large-scale promotion and application. For surveillance cameras, as long as the outdoor scene images within a certain range are captured, the PM value in the scene within this range can be obtained. In a city, the number of surveillance cameras is far greater than the current professional surveillance network. By summarizing these data, a very fine PM value distr...

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Abstract

The invention discloses a method for obtaining the concentration of particles in air based on image processing. The method for processing a collected image comprises the following steps: (1) determining the pixel values of relatively bright atmospheric light pixel points and relatively dark interest pixel points in the image; (2) according to the obtained pixel value of the atmospheric light pixel points and the determined pixel value of the interest pixel points, respectively calculating the light intensity values of corresponding pixel points; (3) according to the obtained light intensity values of the corresponding pixel points in the step (2), calculating a light intensity attenuation coefficient; (4) based on a Mie scattering theory, determining a relation function of an extinction coefficient and the average particle size of particles; (5) determining the concrete value of the average particle size of particles; (7) according to the relation function of the light intensity attenuation coefficient and the extinction coefficient and the average particle size of particles, calculating the concentration of particles. The method can be used for estimating the concentration of particles in air in a wide range with the low cost.

Description

【Technical field】 [0001] The invention relates to the field of computer vision, in particular to a method for obtaining the concentration of particulate matter in the air based on image processing. 【Background technique】 [0002] With the continuous development of industry and transportation, a large amount of harmful substances are discharged into the air, which changes the normal composition of the air and deteriorates the air quality. When people live in polluted air, not only normal life and travel will be greatly affected, but also human health will be greatly damaged. According to existing reports, the smog weather has caused serious pollution in many places in my country, which has brought extremely adverse effects on the production, life and health of the people. [0003] In order to reduce the damage of smog and provide information that is helpful for governance, a comprehensive air quality monitoring network must be established. At present, the more authoritative...

Claims

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Application Information

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IPC IPC(8): G01N15/06
Inventor 王好谦袁新张永兵戴琼海
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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