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Foundation pit construction pile detection control method based on visual detection

A visual detection and detection control technology, applied in the field of visual detection, can solve the problems of complex calculation of foundation pit construction piles, inability to realize real-time detection, and reduced detection accuracy, so as to reduce the amount of calculation data, realize real-time detection, improve The effect of intelligence level

Active Publication Date: 2019-12-03
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the detection of the existing foundation pit construction piles is manually confirmed, which is highly subjective, cannot be detected in real time, and wastes a lot of manpower and material resources; moreover, the environment of the foundation pit is relatively complicated, and when the environment is harsh, The detection accuracy rate is greatly reduced, there is no selective calculation for the collected multi-frame images, and the existing calculation of foundation pit construction piles through computer vision is more complicated, the calculation rate is low, and real-time detection cannot be realized; therefore, by improving The intelligence and real-time performance of foundation pit construction piles, and the improvement of detection efficiency and effect have become urgent needs

Method used

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  • Foundation pit construction pile detection control method based on visual detection
  • Foundation pit construction pile detection control method based on visual detection
  • Foundation pit construction pile detection control method based on visual detection

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Embodiment 1

[0031] In some heavy fog or rainy weather, the definition of the foundation pit and the construction piles in the foundation pit is low, and the image quality of the collected foundation pit is poor. It is necessary to select high-quality images to improve the quality of the foundation pit and the foundation pit. The shortcomings of parameters such as the location of construction piles.

[0032] figure 1 It shows a flow chart of a method for detecting and controlling foundation pit construction piles based on visual detection of the present application, including: step 1, selecting the image of foundation pit construction piles according to the image definition parameter model, and the parameter model is expressed by the following formula:

[0033]

[0034] In the formula, i=1,...,m; Z iis the image clarity index of the i-th foundation pit construction pile in multiple images, Z is the set image clarity index threshold, ρ i is the average gray value of the set area of ​​t...

Embodiment 2

[0043] In sunny weather, there is a phenomenon of high exposure, some of the collected images have high brightness, and some have low brightness, resulting in uneven image quality. It is necessary to select high-quality images to improve foundation pit and construction. Precise positioning of piles.

[0044] In some embodiments, the inclination angle and lifting size of the foundation pit construction piles are calculated in detail, including: step 1, the foundation pit construction pile image is selected according to the image definition parameter model, and the parameter model is expressed by the following formula:

[0045]

[0046] In the formula, i=1,...,m; Z i is the image clarity index of the i-th foundation pit construction pile in multiple images, Z is the set image clarity index threshold, ρ i is the average gray value of the setting area of ​​the i-th foundation pit construction pile image in multiple images, ρ is the gray value threshold set according to the act...

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Abstract

The invention relates to a foundation pit construction pile detection control method based on visual detection. The method comprises the steps that 1, performing foundation pit construction pile imageselection according to an image definition parameter model; 2, dividing the foundation pit construction pile image frame into n * n image blocks, detecting each image block by using a phase information method to detect whether the construction pile is contained in the image block, and finding out all the image blocks containing the construction pile; 3, subtracting the previous frame of foundation pit construction pile image from the current frame of foundation pit construction pile image, and judging whether the pixel value corresponding to the image block containing the construction pile ischanged; and 4, judging the state of the construction pile according to the foundation pit construction pile image information. According to the foundation pit construction pile detection control method, the detection efficiency and accuracy are remarkably improved, the detection intelligence level is improved, unnecessary data calculation is greatly reduced, the detection accuracy and the detection real-time performance are greatly enhanced, and the practicability is enhanced.

Description

technical field [0001] The invention relates to the technical field of visual detection, in particular to a detection and control method for foundation pit construction piles based on visual detection. Background technique [0002] The construction pile in the foundation pit construction process is one of the important indicators to characterize the current construction stability of the foundation pit. With the rapid development of image processing technology, the use of digital image technology to monitor and measure the construction status of the project has become one of the research hotspots. It uses Simple sensor devices such as CCD cameras measure construction piles or determine whether there is displacement based on image processing technology. The change of construction piles during the foundation pit construction has an important influence on the deformation of the foundation pit and the internal force of the support system. The use of digital image technology can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/254G06T7/00
CPCG06T7/0004G06T7/254G06T2207/10016G06T2207/20224G06T2207/30168G06T2207/30232
Inventor 谢祥明唐福来李松明席文欢符利路元陈华平
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD