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Visibility observation method

A technology of visibility and observation model, applied in the field of meteorological detection, can solve the problems of poor subjectivity, complex debugging, and high equipment cost, and achieve the effects of low cost, easy method and convenient use.

Active Publication Date: 2017-02-15
CHINESE ACAD OF METEOROLOGICAL SCI
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AI Technical Summary

Problems solved by technology

Its strong subjectivity and poor standardization seriously restrict the comprehensive automation development of meteorological observation
At present, the instrumental method mainly uses transmissometer and forward scatter meter, etc., but there are problems such as high equipment cost, complicated debugging, and small sampling range, making it difficult to realize all-round real-time monitoring of atmospheric visibility

Method used

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Examples

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Embodiment Construction

[0053] figure 1 is a schematic flowchart of a visibility observation method according to an embodiment of the present invention. Such as figure 1 Shown, a kind of visibility observation method of the present invention comprises the following steps:

[0054] s101. Image acquisition, used to acquire digital images containing ground objects and sky backgrounds near the ground objects within a predetermined angle range;

[0055] s102. Digital image processing, for processing the digital image into a dark channel image;

[0056] s103. Image transmittance distribution calculation, used to calculate and obtain a transmittance distribution map;

[0057] s104. Transmittance distribution map processing, used to obtain a refined transmittance distribution map;

[0058] s105. Calculate the visibility, and obtain the visibility through the calculation of the image visibility observation model.

[0059] Specifically, in step s101, the image is acquired, and the digital image is a digit...

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Abstract

The present invention provides a visibility observation method, and belongs to the meteorological detection field, and the method comprises the following steps: image acquisition, used to obtain a digital image containing ground objects; digital image processing, used for processing the digital image into a dark channel image; image transmittance distribution calculation, used to calculate and obtain a transmittance distribution map; transmittance distribution map processing, used to obtain a refined transmittance distribution map; and visibility calculation, used to calculate and obtain visibility by use of an image visibility observation model. According to the visibility observation method, separated erection of an artificial object is not needed, brightness, color, contrast ration and other optical information of the digital image are used fully for image analysis processing, atmospheric visibility information can be obtained, the cost is low, the structure is simple, and the application range is wide.

Description

technical field [0001] The invention relates to the field of weather detection, in particular to a visibility observation method. Background technique [0002] As an important meteorological observation factor, atmospheric visibility is used to understand the stability of the atmosphere and judge the nature of air masses. Its observations are not only used in the weather analysis of meteorological departments, but also widely used in aviation, navigation, road traffic, military and environmental monitoring and other fields. It is one of the important factors affecting aviation, navigation, road traffic and military activities. Weather with low visibility often causes traffic jams, flight delays, and even road closures and flight suspensions. Accurate and timely observation of visibility, and timely corresponding early warning responses in low visibility conditions have important practical application value in various fields. [0003] Meteorological visibility is expressed ...

Claims

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Application Information

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IPC IPC(8): G01N21/59
CPCG01N21/59
Inventor 陆天舒吕伟涛杨俊马颖姚雯
Owner CHINESE ACAD OF METEOROLOGICAL SCI
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