Tunnel detection method based on binocular vision

Abstract

The invention belongs to the technical field of nondestructive testing, and discloses a tunnel detection method based on binocular vision. The method comprises the following steps: (1) inputting a high temperature alarm threshold temperature, and building infrared thermal image and visible light data models of a normal wall without water leakage; (2) shooting an infrared thermogram and a visible light thermogram of a tunnel wall; (3) determinining whether there is a high temperature region through temperature statistics of the infrared thermogram, and giving an alarm for high temperature; (4)reducing noise and extracting water leakage regions in the infrared thermogram and in the visible light thermogram; (5) synthesizing the water leakage region extraction maps of the infrared thermogramand the visible light thermogram as a final water leakage region extraction map; and (6) calculating the water leakage area according to the water leakage region extraction map. The method uses a binocular vision technology based on an infrared thermal imaging technology and a visible light imaging technology, and can combine the advantages of the infrared thermal imaging technology and the visible light imaging technology to achieve a better water leakage region extraction effect.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing, and more specifically relates to a tunnel testing method. Background technique [0002] In road tunnels, railway tunnels and cable tunnels, since the tunnels are located underground or in mountains, the tunnel wall is prone to water leakage, and at the same time, the cables laid in the tunnels will also experience high temperature and overheating. normal operation will be seriously affected. At present, the main detection method is manual regular inspection, but manual inspection cannot accurately judge the operation status of the cable, and it is also difficult to analyze and extract the characteristics and area of ​​the tunnel water leakage area, and the speed of manual inspection is slow and it is difficult to achieve rapid detection . Contents of the invention [0003] In view of the above defects or improvement needs of the prior art, the present invention provides a tunn...

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Problems solved by technology

[0002] In road tunnels, railway tunnels and cable tunnels, since the tunnels are located underground or in mountains, the tunnel wall is prone to water leakage, and at the same time, the cables laid in the tunnels will also experience high temperature and overheating. normal operation of the

At present, the main detection method is manual regular inspection, but manual inspection cannot accurately judge the operation status of the cable, and it is also difficult to analyze and extract the characteristics and area of ​​the tunnel water leakage area, and the speed of manual inspection is slow and it is difficult to achieve rapid detection

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