Bridge deformation monitoring method and device based on visual perception, and equipment

Abstract

The invention discloses a bridge displacement monitoring method based on visual perception. The bridge displacement monitoring method comprises the steps of obtaining at least two frames of initial images collected by a binocular camera; converting the at least two frames of initial images into at least two frames of integral images, wherein the gray value of the current pixel point in the integral image is determined according to the gray value of each pixel point in a set rectangular area of the initial image, and the set rectangular area is a rectangular area in which the original point ofthe initial image and the current pixel point are non-adjacent vertexes; detecting matched feature points in the at least two frames of integral images; and determining the displacement of the bridgeaccording to the matched feature points. According to the technical scheme, the images are converted into the integral images, and then the feature points of the integral images are monitored, and themonitoring steps are simplified, and the displacement of the bridge is determined according to the matched feature points in the two frames of images, and real-time and nondestructive monitoring of the displacement of the bridge is achieved, and the monitoring speed is high, and the monitoring method is wide in applicability and high in precision.

Description

Technical field [0001] The embodiments of the present invention relate to the field of image processing technology, and in particular to a method, device and equipment for monitoring bridge deformation based on visual perception. Background technique [0002] With the rapid development of the transportation industry, various types of infrastructure have experienced varying degrees of aging and disease. As an important part of the transportation infrastructure, the regular monitoring and maintenance of bridges has become increasingly important. Generally speaking, deflection is the most direct parameter that characterizes the performance of a bridge. Therefore, the monitoring of bridge deflection has become an important part of bridge operation, maintenance and safety assessment. [0003] At present, there are two main methods for measuring the displacement of highway bridges: one is to use contact monitoring equipment such as displacement meters, static level gauges, etc.; the othe...

AI Technical Summary

Problems solved by technology

Contact measurement usually requires opening holes on the bridge for fixing, which will affect the stiffness and stress distribution of the bridge structure. Under the action of the bridge load, the durability of the equipment is poor, and it is easy to cause problems such as disconnection and failure

In terms of installation and maintenance, there are also certain difficulties

Although non-contact measurement methods such as total stations, GPS, and laser displacement meters can avoid damage to structures, such devices are often affected by the environment, cost high, and have limited accuracy.

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